Introduction
For many foreign buyers considering an apartment in Istanbul, earthquake safety is one of the most important questions in the entire purchasing process.
The concern is understandable.
Istanbul is a major metropolitan area exposed to significant seismic risk, and official AFAD programs such as İSMEP were created specifically to reduce earthquake-related structural risk and improve preparedness across the city. Istanbul AFAD identifies the city's proximity to the North Anatolian Fault as an important part of its earthquake-risk profile.
However, property buyers should avoid making one of two opposite mistakes.
The first is assuming:
“Every apartment in Istanbul is dangerous.”
The second is assuming:
“This building is new, so it must be earthquake-safe.”
Neither approach represents proper property due diligence.
Earthquake safety is much more complex.
The risk associated with a particular apartment depends on several interacting factors, including:
- Structural design
- Construction quality
- Building regulations applicable when it was designed
- Ground and soil conditions
- Foundation system
- Materials
- Building modifications
- Maintenance
- Structural deterioration
- Engineering assessment
The correct question is therefore not:
“Which district of Istanbul is earthquake-safe?”
A better question is:
“How can I evaluate the structural and seismic risk of this specific building before I buy an apartment?”
That distinction is the foundation of this guide.
Is Istanbul an Earthquake-Risk City?
Yes. Earthquake risk is a serious consideration when buying property in Istanbul.
Official Istanbul AFAD documentation identifies earthquakes among the city's priority disaster hazards, and İstanbul's seismic-risk reduction programs have included structural strengthening, reconstruction, emergency preparedness, and urban risk-reduction initiatives.
However, the word risk should be understood correctly.
A city can be exposed to seismic hazard without every building having the same level of vulnerability.
Two apartment buildings located relatively close to one another can behave very differently during strong ground motion because their:
- Structural systems
- Construction dates
- Materials
- Foundations
- Ground conditions
- Engineering quality
may be completely different.
This is why property buyers should separate three concepts:
Earthquake Hazard
Building Vulnerability
Property-Specific Risk
Earthquake Hazard vs Building Safety
Understanding this difference is one of the most important parts of earthquake-conscious property buying.
Earthquake Hazard
Earthquake hazard refers broadly to the expected characteristics of earthquake ground motion in a particular location.
AFAD's current Türkiye Earthquake Hazard Map replaced the older earthquake-zone classification system.
The current map became legally effective on January 1, 2019 and uses more detailed parameters such as:
- Peak Ground Acceleration
- Peak Ground Velocity
- Spectral acceleration
rather than simply placing locations into traditional earthquake zones.
This allows engineers to evaluate seismic design using more location-specific ground-motion parameters.
Building Vulnerability
Building vulnerability refers to how susceptible a structure may be to damage when exposed to earthquake ground motion.
It can be influenced by:
- Structural system
- Engineering design
- Concrete quality
- Reinforcement
- Building irregularities
- Construction workmanship
- Deterioration
- Unauthorized alterations
Two buildings exposed to similar ground motion may therefore experience very different levels of damage.
Property-Specific Risk
For a buyer, the practical concern is the combination of:
Hazard + Building Vulnerability + Site Conditions
This means that a district name alone cannot certify an individual building as safe.
Why “Safest District in Istanbul” Can Be a Misleading Question
Online property content sometimes attempts to divide Istanbul into:
- Safe districts
- Dangerous districts
This approach can oversimplify a highly technical issue.
District-level location matters, but buildings should still be evaluated individually.
A district can contain:
- New developments
- Older apartment blocks
- Reinforced structures
- Buildings awaiting urban transformation
- Different soil conditions
- Different foundation systems
sometimes within relatively short distances of one another.
Therefore:
District selection should be part of earthquake due diligence, not a substitute for building-level assessment.
A buyer should avoid rejecting or accepting an apartment solely because of the district name.
Understanding the 2018 Turkish Building Earthquake Code
One of the most important milestones in Türkiye's modern seismic design framework is the Türkiye Building Earthquake Code 2018, commonly referred to as TBDY 2018.
AFAD states that the code was published in the Official Gazette on March 18, 2018 and became legally effective on:
January 1, 2019.
It represented a comprehensive revision of the previous 2007 earthquake code.
This date is important for property buyers because it helps identify which regulatory framework may have governed the engineering design of a newer building.
What Does the Current Earthquake Code Cover?
The 2018 code is much broader than a simple rule concerning reinforced concrete.
AFAD states that the regulation contains 17 chapters covering areas such as:
- Earthquake ground motion
- Structural analysis
- Reinforced concrete buildings
- Steel structures
- Lightweight steel structures
- Masonry buildings
- Wooden buildings
- Tall buildings
- Seismically isolated buildings
- Existing-building assessment
- Structural strengthening
- Foundation soil
- Foundation design.
This is important because earthquake-resistant design does not depend on a single structural component.
A building behaves as a system.
Engineers must consider how:
Ground → Foundation → Structural System → Building Components
interact during earthquake motion.
The Code Applies to More Than New Buildings
Another important point is that the current Turkish earthquake regulation is not limited to designing new apartment buildings.
AFAD states that it also includes requirements for:
- Seismic assessment of existing buildings
- Strengthening existing structures.
This matters for buyers considering older resale apartments.
An older building should not automatically be dismissed solely because of age.
Instead, the buyer should investigate whether its structural performance has been professionally evaluated and whether any strengthening or major structural interventions have occurred.
Does “Built After 2019” Mean Earthquake-Safe?
Not automatically.
A building designed under the current seismic regulation benefits from a newer regulatory framework, but the construction date alone cannot guarantee structural performance.
A building can comply on paper with modern regulations while the quality of execution still matters.
Important variables include:
- Engineering design
- Ground investigation
- Material quality
- Reinforcement placement
- Concrete execution
- Foundation construction
- Building inspection
- Later modifications
The 2018 regulation itself includes separate requirements concerning structural systems, earthquake ground motion, foundation soils, and existing-building assessment, demonstrating that seismic performance depends on multiple engineering variables rather than simply age.
For this reason:
Newer construction should generally be evaluated as an advantage, not as automatic proof of earthquake safety.
What About Buildings Constructed Before 2019?
Older buildings require more detailed investigation.
But:
Older does not automatically mean unsafe.
Türkiye has had multiple earthquake regulations over the decades.
AFAD lists major updates to the country's earthquake building codes in:
- 1947
- 1953
- 1961
- 1968
- 1975
- 1997
- 2007
Therefore, a building's approximate construction period can help identify which regulatory environment existed when it was designed.
However, age should still be combined with technical assessment.
A well-designed and well-maintained older building may have a different risk profile from a poorly executed newer structure.
New Build vs Older Resale Apartment
Foreign buyers frequently ask:
Should I buy a new apartment because of earthquake concerns?
New construction can offer several potential advantages.
Newer Regulatory Framework
A recently permitted building is more likely to have been designed under newer seismic requirements.
Modern Engineering
Contemporary developments may benefit from:
- Improved structural analysis
- Modern engineering software
- Updated ground investigation
- Modern materials
Better Documentation
Newer projects may also provide easier access to:
- Technical specifications
- Developer information
- Construction records
- Building permits
However, buyers should still investigate the project rather than simply trusting its construction date.
Advantages and Risks of Older Buildings
Older apartments may offer:
- Better central locations
- Larger floor plans
- Established neighborhoods
- Lower purchase prices
But the building may require more investigation.
Potential concerns can include:
- Aging materials
- Corrosion
- Historic construction practices
- Previous modifications
- Incomplete documentation
- Structural deterioration
The correct comparison is therefore not:
New = Safe
and:
Old = Unsafe
A better framework is:
New Building → Verify Design and Execution
Older Building → Verify Structural Condition and History
Building Age vs Actual Structural Condition
Age is an important screening factor, but it is not a structural engineering diagnosis.
Imagine two buildings.
Building A
Constructed 15 years ago.
It has:
- Good maintenance
- No known structural alterations
- Strong documentation
- Professional management
Building B
Constructed 7 years ago.
But it has:
- Uncontrolled modifications
- Water penetration
- Poor maintenance
- Questionable construction quality
Building B is newer, but age alone does not prove that it represents the better structural choice.
This illustrates why property buyers should investigate condition and construction history, not simply the year printed in the listing.
Construction Quality Matters
Earthquake-resistant design must be correctly executed on site.
Important construction factors can include:
- Reinforcement installation
- Concrete placement
- Structural detailing
- Foundation implementation
- Quality control
This is why developer reputation can matter when buying new or off-plan property.
Foreign buyers should investigate:
- Previous completed projects
- Contractor experience
- Developer history
- Construction supervision
- Technical documentation
A premium sales office does not provide evidence of structural quality.
Structural System Matters
Apartment buildings can use different structural systems.
Common structural elements may include:
- Reinforced concrete columns
- Beams
- Shear walls
- Structural cores
- Foundation systems
The suitability of a particular system depends on the building design.
A buyer should therefore be cautious when property marketing uses simplified phrases such as:
- Extra strong concrete
- Earthquake-proof system
- Special foundation
- Advanced seismic technology
These descriptions may sound reassuring but should be supported by actual engineering documentation.
Ground Conditions Matter
The structural design of an apartment building cannot be evaluated independently from the ground beneath it.
The current Turkish earthquake code includes specific provisions concerning:
Foundation Soil and Foundations.
AFAD also discusses the importance of parameters such as VS30, which represents shear-wave velocity characteristics used in soil classification and seismic assessment. AFAD notes that the 2018 building regulation incorporates soil classification based on such geotechnical characteristics.
For property buyers, the practical lesson is simple:
The quality of the apartment building and the characteristics of the site must be considered together.
Why Ground Conditions Can Change Building Performance
Different ground materials respond differently during earthquake shaking.
Factors engineers may examine include:
- Soil stiffness
- Geological layers
- Groundwater
- Foundation conditions
- Local seismic amplification
This is one reason a simple citywide or districtwide earthquake ranking cannot determine the safety of an individual apartment.
A professional technical evaluation must consider the actual building site.
AFAD Earthquake Hazard Map Is Not a Building Safety Certificate
Foreign buyers sometimes use the AFAD earthquake map and assume it can answer:
“Is this apartment safe?”
That is not what the map does.
AFAD explains that the current map presents regional earthquake hazard using ground-motion parameters such as peak ground acceleration and related seismic values.
It does not inspect:
- Concrete
- Columns
- Reinforcement
- Foundation execution
- Structural alterations
of a specific apartment building.
Therefore:
Earthquake Hazard Map ≠ Structural Inspection
Both can be useful, but they answer different questions.
Building Modifications Can Affect Risk
A building may originally have been properly engineered but later undergo inappropriate modifications.
Potentially serious alterations can include changes to:
- Columns
- Load-bearing walls
- Structural elements
- Ground-floor commercial spaces
Istanbul AFAD specifically advises residents not to modify a building's structural system and not to permit interference with load-bearing columns or walls.
This makes modification history an important consideration when buying a resale apartment.
Ground-Floor Commercial Units Deserve Attention
Many Istanbul apartment buildings contain:
- Shops
- Restaurants
- Offices
- Retail spaces
on the ground floor.
The existence of commercial units does not automatically make the building unsafe.
However, buyers should determine whether structural changes have been made to create larger commercial spaces.
For example, unauthorized alteration of structural components can be an important warning sign.
If there is any doubt, the issue should be evaluated by a qualified engineer rather than inferred visually.
Visible Cracks Do Not Tell the Whole Story
Foreign buyers sometimes inspect an apartment and try to determine safety by looking for cracks.
This approach has major limitations.
Some cracks may be:
- Cosmetic
- Plaster-related
- Non-structural
Other signs may require professional investigation.
The absence of visible cracks also does not prove that a building is structurally safe.
A property viewing should therefore be treated as an initial screening rather than an engineering evaluation.
Moisture and Corrosion Should Not Be Ignored
Older buildings may experience:
- Water penetration
- Basement moisture
- Reinforcement corrosion
- Concrete deterioration
These issues can affect durability.
When evaluating older apartments, pay particular attention to:
- Basement areas
- Parking floors
- Structural elements exposed to moisture
- Poorly maintained façades
If signs of deterioration exist, seek a professional technical assessment.
Foundation Type Is Not a Marketing Shortcut
Real estate advertisements sometimes promote particular foundation types as if the foundation name alone guarantees earthquake safety.
That is misleading.
Foundation performance depends on:
- Ground conditions
- Structural loads
- Engineering design
- Construction quality
The current Turkish earthquake code explicitly treats soil and foundation design as part of the wider structural system.
Therefore, statements such as:
“This building uses a raft foundation, so it is completely earthquake-safe.”
should not be accepted without engineering context.
What Does “Earthquake Resistant” Actually Mean?
No responsible buyer should interpret earthquake-resistant design as meaning:
The building can never be damaged in an earthquake.
Modern seismic engineering generally aims to control structural performance under defined levels of earthquake ground motion.
The current Turkish code sets minimum requirements for building design, seismic assessment, and structural performance.
The practical objective is risk reduction—not an absolute promise that no damage can occur.
This is why the phrase:
100% Earthquake-Proof
should be treated with skepticism in real estate marketing.
Property Valuation Is Not Structural Certification
Another common misunderstanding is assuming that a real estate valuation report proves that the apartment is structurally safe.
A property valuation primarily addresses economic and real-estate characteristics.
Structural safety requires engineering assessment.
These are different professional tasks.
Therefore:
Property Valuation ≠ Structural Engineering Report
A buyer concerned about earthquake performance should not use one as a substitute for the other.
Real Estate Agents Cannot Certify Structural Safety
A knowledgeable real estate advisor can help buyers collect information such as:
- Construction year
- Developer
- Building documents
- Property history
But structural certification requires appropriate technical expertise.
If earthquake performance is a major purchasing concern, buyers should consider consulting:
- Structural engineers
- Civil engineers
- Authorized technical institutions
depending on the type of assessment required.
A sales statement saying:
“This project is earthquake-safe.”
should be followed by:
“What engineering documentation supports that statement?”
Why Independent Due Diligence Matters
Earthquake safety is one area where independent due diligence can add considerable value.
The seller's objective is to sell.
The developer's objective is to market the project.
The agent's objective is to facilitate the transaction.
The engineer's role is different.
Technical professionals evaluate questions such as:
- Structural system
- Existing condition
- Engineering documentation
- Potential deficiencies
This separation of roles protects the buyer from making a major financial decision based only on sales information.
Earthquake Safety and Off-Plan Property
Off-plan developments require a slightly different approach because the completed apartment may not yet exist.
Buyers may need to evaluate:
- Developer reputation
- Contractor
- Technical specification
- Building permit
- Structural design information
- Ground investigation
- Construction progress
The advantage is that new projects may be designed under current building regulations.
The risk is that the buyer cannot yet inspect the finished structure.
For this reason, earthquake-conscious buyers of off-plan property should combine:
Regulatory Compliance + Developer Due Diligence + Contract Review + Construction Monitoring
rather than relying only on the project's advertised completion year.
Earthquake Safety and Resale Property
Resale apartments provide a different advantage:
the actual building already exists.
Buyers can potentially examine:
- Building condition
- Basement
- Common areas
- Maintenance history
- Previous renovations
- Structural alterations
But older properties may require deeper technical investigation.
For earthquake-conscious resale buyers, the analysis should focus on:
Construction History + Current Condition + Documentation + Engineering Assessment
Should You Automatically Avoid Older Istanbul Apartments?
No.
Automatically rejecting every older apartment can eliminate attractive opportunities in some of Istanbul's most established neighborhoods.
Older properties may provide:
- Excellent locations
- Large net floor areas
- Strong rental demand
- Established building management
The correct strategy is not to ignore older properties.
It is to demand more evidence before buying them.
An older apartment with strong technical documentation and a favorable professional assessment may provide a stronger investment case than a newer apartment whose construction quality is uncertain.
Should You Automatically Prefer a New Apartment?
Not automatically.
Newer apartments offer meaningful advantages, particularly where they have been designed under the current seismic framework.
But property buyers should still verify:
- Developer
- Permit
- Construction quality
- Ground conditions
- Building documentation
A construction date is an important due-diligence variable.
It is not a substitute for due diligence.
A Better Earthquake-Safety Evaluation Framework
Rather than simply asking:
New or Old?
evaluate the property using five layers.
1. Regulatory Framework
When was the building designed and constructed?
Which earthquake regulation was applicable?
2. Site Conditions
What are the relevant ground conditions?
3. Structural Design
What structural system and foundation approach were used?
4. Construction and Current Condition
Was the design executed properly, and how has the building been maintained?
5. Independent Verification
What documentation and technical assessment are available?
This creates a much stronger decision framework than choosing property based purely on:
- District
- Building age
- Developer advertising
Earthquake Risk Should Be Part of Property Investment Analysis
Earthquake-conscious due diligence is not only about personal safety.
It can also affect investment quality.
Potential implications include:
- Future buyer confidence
- Resale liquidity
- Renovation costs
- Urban transformation
- Insurance considerations
- Maintenance burden
For example, two apartments may generate similar rent today.
But if one building later requires major structural work, the long-term financial outcome could be very different.
Therefore, structural condition should be considered part of:
Investment Risk Management
rather than treated as a separate technical topic.
Key Takeaways
Istanbul is a city where earthquake risk should be taken seriously, and official AFAD programs continue to treat seismic-risk reduction as a major part of urban resilience planning.
However, investors should avoid simplifying earthquake risk into district rankings.
The safety profile of an individual apartment depends on the interaction between:
- Seismic hazard
- Ground conditions
- Structural design
- Construction quality
- Building condition
- Alterations
- Engineering verification
The current Türkiye Building Earthquake Code was published on March 18, 2018 and became legally effective on January 1, 2019. It replaced the 2007 framework and introduced a comprehensive set of rules covering new buildings, existing-building assessment, structural strengthening, foundations, and multiple structural systems.
The current Türkiye Earthquake Hazard Map also became effective on January 1, 2019 and replaced the older earthquake-zone concept with more detailed ground-motion parameters such as peak ground acceleration.
For buyers, however, neither a map nor a construction date should be treated as a building-safety certificate.
The correct approach is:
Do not buy an apartment because it is described as earthquake-safe. Verify why it should be considered structurally appropriate.
A stronger due-diligence equation is:
Regulation + Ground Conditions + Structural Design + Construction Quality + Building Condition + Independent Review
In Part 2, we will move from theory to practical buyer due diligence and examine exactly what documents, records, building characteristics, and professional assessments should be checked before purchasing an apartment in Istanbul.
How to Check an Apartment Before Buying in Istanbul
Understanding earthquake regulations is important, but buyers ultimately need to evaluate a specific building.
That requires moving from general questions such as:
“Is this district safe?”
to practical due-diligence questions such as:
- When was the building permitted?
- Does it have a valid building permit?
- Does it have a Yapı Kullanma İzin Belgesi, commonly called İskan?
- Has the building undergone unauthorized structural modifications?
- Has it ever been officially classified as a risky building?
- Are structural drawings and building records available?
- Are there signs that justify professional engineering investigation?
- Has an authorized institution performed a formal risk assessment?
AFAD specifically advises people buying or renting homes to verify the building's Yapı Ruhsatı and Yapı Kullanma İzin Belgesi, investigate whether structural changes have been made after construction, and obtain testing from competent and authorized organizations when there is doubt about earthquake resistance.
This means earthquake-conscious due diligence should involve both:
Documentation Review + Technical Review
Neither one should replace the other.
Check the Construction Year
The construction year is one of the first pieces of information a buyer should establish.
It can help determine:
- Which earthquake regulation may have applied
- Which construction practices were common at the time
- Whether modern building-inspection systems may have applied
- How much age-related deterioration may need to be investigated
As explained in Part 1, the current Türkiye Building Earthquake Code became effective on January 1, 2019.
However, buyers should avoid treating January 1, 2019 as a simple dividing line between:
Safe
and:
Unsafe
The relevant regulatory framework is important, but the actual project approval, engineering design, construction quality, building inspection, maintenance, and later modifications also matter.
Do Not Rely Only on the Listing
Property advertisements may state:
- Building age: 5 years
- New building
- Recently constructed
Verify this information through official documentation where possible.
A building may also have undergone:
- Reconstruction
- Major renovation
- Urban transformation
which can make a simple listing age misleading.
Check the Building Permit — Yapı Ruhsatı
One of the most important documents is the Yapı Ruhsatı, or building permit.
AFAD specifically recommends confirming that the building has a building permit when evaluating a home for purchase or rental.
The permit process involves more than permission to start construction.
Official Ministry service standards show that the building-permit file can include documents and technical projects such as:
- Land/title information
- Zoning information
- Geological-geotechnical study
- Architectural project
- Structural project
- Mechanical project
- Electrical project
- Contractor information
- Site manager information
- Building-inspection documentation where applicable.
For an earthquake-conscious buyer, the structural and geotechnical parts are especially relevant.
Why the Building Permit Matters
The building permit helps answer:
Was the project formally approved for construction under the applicable planning and technical framework?
It does not prove that the building can never suffer earthquake damage.
It does, however, form an important part of the building's legal and technical history.
What If There Is No Building Permit?
A missing permit should trigger deeper legal and technical investigation.
Importantly, the Ministry states that even an unlicensed building can potentially undergo a formal Riskli Yapı assessment under Law No. 6306.
That does not make absence of a permit unimportant.
It simply means:
Permit Status
and:
Official Risk Assessment
are different questions.
Check the Occupancy Permit — Yapı Kullanma İzin Belgesi / İskan
The Yapı Kullanma İzin Belgesi, commonly known as İskan, is another critical document.
AFAD describes the occupancy permit as an important indicator that a building was completed under supervision and in accordance with its approved project.
The Ministry's current guidance also explains that an occupancy permit is connected with confirmation that the structure was completed in accordance with its permit and approved project and is technically suitable for use.
Why İskan Matters to a Buyer
Its existence helps answer several questions:
- Was the project formally completed?
- Was its completion reviewed by the relevant authority?
- Was it recognized as suitable for use under the applicable procedure?
It should therefore be included in due diligence for both:
- New apartments
- Resale apartments
Is İskan an Earthquake-Safety Certificate?
No.
This distinction is essential.
A Yapı Kullanma İzin Belgesi is an important building-completion and legal-use document.
It is not a property-specific structural performance certificate guaranteeing that the building will survive every future earthquake without damage.
Therefore:
İskan = Important Due-Diligence Document
but:
İskan ≠ Guaranteed Earthquake Safety
Check Whether the Building Has Kat Mülkiyeti
Foreign buyers should also understand the title structure.
For a completed apartment building, Kat Mülkiyeti, or condominium ownership, can be an important part of legal due diligence.
The Ministry explains that establishing condominium ownership requires, among other items, an approved architectural project and the Yapı Kullanma İzin Belgesi.
This is relevant because title status can help reveal where a property sits in the legal development process.
However:
Kat Mülkiyeti is a property-right status, not a structural safety certification.
A building with condominium ownership should still undergo technical investigation where earthquake safety is a concern.
Ask Whether the Building Has Been Declared a Risky Building
One of the most important questions for older Istanbul buildings is:
Has this building ever been officially identified as a Riskli Yapı?
Türkiye has a formal mechanism for this under Law No. 6306 on the Transformation of Areas Under Disaster Risk.
The Ministry of Environment, Urbanization and Climate Change maintains an official Riskli Yapı Tespiti service through e-Devlet.
A confirmed risky-building determination is a significant legal and technical matter and should never be ignored in a property purchase.
What Is Riskli Yapı Tespiti?
Riskli Yapı Tespiti can be translated broadly as:
Risky Building Determination / Assessment
It is a formal process within the framework of Law No. 6306.
The purpose is not simply to have an engineer casually inspect an apartment.
It is a regulated determination carried out according to the applicable legal and technical procedure.
The Ministry states that owners can have buildings assessed by institutions and organizations licensed by the Ministry, with the request handled through the electronic system.
Who Can Perform an Official Risky Building Assessment?
Not every:
- Real estate agency
- Contractor
- General consultant
- Informal inspection company
can issue an official Riskli Yapı determination under Law No. 6306.
The Ministry maintains lists of institutions and organizations authorized for this purpose. Current Ministry guidance directs citizens to use organizations authorized under Law No. 6306 for risky-building determinations.
Official provincial Ministry pages likewise state that licensed institutions are authorized to carry out Riskli Yapı assessments under the law.
For a buyer, this creates an important distinction between:
General Structural Inspection
An engineer may provide technical advice or conduct a private structural review.
and:
Official Riskli Yapı Determination
This is a formal procedure performed under Law No. 6306 by appropriately authorized institutions.
The two should not automatically be treated as identical.
Can One Owner Request a Riskli Yapı Assessment?
Official Ministry guidance states that the assessment can be initiated through an application by one of the building owners or their legal representative, with the process conducted through the electronic system.
This is important for apartment buildings with many independent units.
However, a prospective buyer who does not yet own the apartment should not assume they personally have the same legal standing as an existing owner.
If an official assessment is important to the purchase decision, this should be coordinated with:
- The owner
- Legal counsel
- An authorized technical institution
before completion of the purchase.
Does Every Building Have a Riskli Yapı Report?
No.
The absence of a Riskli Yapı report should not be interpreted as proof that the building has passed a structural safety assessment.
A building may simply never have undergone the formal process.
The formal assessment generally begins when the relevant owner or legal representative initiates the process, or where the competent authority requires it under the applicable legal framework.
Therefore:
No Risk Report Found ≠ Building Confirmed Safe
This is one of the most important distinctions foreign buyers should understand.
What Happens If a Building Is Officially Determined to Be Risky?
Under the Law No. 6306 procedure, once a risky-building determination is confirmed through the applicable process, the status can be communicated to the Land Registry and reflected in the relevant title records. Official Ministry materials describe the process of notifying the title registry after the determination.
The Ministry's current urban-resilience programs also use the official Riskli Yapı Kimlik Numarası for buildings already classified as risky under Law No. 6306.
For a buyer, an official risky-building status can materially affect:
- Purchase decision
- Financing
- Renovation expectations
- Demolition/reconstruction process
- Urban transformation
- Future occupancy
This should be reviewed with both technical and legal professionals before purchasing.
Riskli Yapı Assessment Is Not the Same as a Quick Earthquake Test
Marketing language can be confusing.
You may see services advertised as:
- Earthquake test
- Building test
- Seismic test
- Quick scan
- Structural inspection
- Risk report
These terms should not automatically be treated as legally equivalent.
Ask:
Is this an official Riskli Yapı Tespiti under Law No. 6306, or is it a separate technical assessment?
Both may potentially provide useful information.
But they have different legal implications.
Ask for a Professional Structural Assessment When Necessary
AFAD advises that where the earthquake resistance of a building is uncertain, the building should be examined and tested by competent and authorized organizations.
For buyers, this is particularly important when considering:
- Older buildings
- Buildings with uncertain history
- Buildings with visible deterioration
- Buildings with major commercial modifications
- Properties lacking complete documentation
The assessment required will depend on the building and the buyer's objective.
Structural Engineer vs Real Estate Agent
These roles should remain clearly separated.
Real Estate Agent
A real estate professional may help identify:
- Construction year
- Developer
- Building management
- Previous renovations
- Available documents
Structural or Civil Engineer
A qualified engineer may evaluate technical matters relating to:
- Structural elements
- Engineering drawings
- Existing condition
- Potential modifications
- Need for further testing
Lawyer
A lawyer may investigate:
- Property title
- Legal annotations
- Building documentation
- Contractual risks
A strong transaction may therefore involve several professionals working on different parts of the same risk.
Check Columns, Beams, Shear Walls, and Structural Elements
AFAD identifies structural elements such as:
- Columns
- Beams
- Shear walls
- Floors
- Foundations
- Structural connections
as parts of the load-bearing structural system.
A property buyer should not attempt to calculate their structural capacity independently.
Instead, the practical objective is to determine whether there is evidence of:
- Unauthorized intervention
- Physical deterioration
- Damage
- Major alterations
that requires professional investigation.
Has a Column Been Cut or Modified?
This is one of the most serious questions buyers can ask about an older apartment building.
AFAD specifically warns that structural modifications affecting columns or load-bearing walls should be investigated and that building occupants should not permit intervention in load-bearing columns and walls.
Possible warning scenarios include:
- Ground-floor shop expanded
- Two commercial units combined
- Large openings created
- Basement layout significantly altered
- Parking area reconfigured
These do not automatically prove structural damage.
But they justify further investigation.
Ground-Floor Commercial Properties Require Extra Due Diligence
Ground-floor shops are common across Istanbul.
A commercial ground floor is not automatically unsafe.
However, buyers should investigate whether the space was modified after construction.
AFAD explicitly advises people to find out whether later changes have affected the building's structural system.
For example, if a restaurant, supermarket, showroom, or retail unit required major interior changes, ask:
- Was a structural wall removed?
- Were columns altered?
- Were approved renovation permits obtained?
- Do the current plans match the actual building?
These questions should be handled through documentation and engineering review, not visual guesswork.
Check for Unauthorized Structural Alterations
AFAD recommends that homes be used in accordance with their intended project and that modifications have the appropriate renovation permit where required.
For property buyers, this means comparing:
Approved Building / Apartment Plans
with:
What Exists Today
can be valuable.
Possible changes may include:
- Combining rooms
- Removing walls
- Closing balconies
- Changing commercial usage
- Adding heavy installations
Not every renovation affects seismic performance.
The issue is whether the change interferes with the structural system or legal project configuration.
Visible Cracks: Warning Sign or Cosmetic Issue?
Cracks are one of the most misunderstood building characteristics.
A buyer may see a crack and immediately assume:
“Structural failure.”
Or see no cracks and assume:
“The building is safe.”
Neither conclusion is reliable without technical evaluation.
AFAD distinguishes between damage to structural and non-structural components in its disaster terminology, demonstrating that not all cracking has the same structural significance.
Therefore:
Visible Crack ≠ Automatic Structural Failure
and:
No Visible Crack ≠ Structural Certification
If cracks appear concerning, obtain professional review.
Where Should Buyers Look During an Initial Building Inspection?
A buyer can perform a non-technical visual screening before deciding whether to commission further investigation.
Areas worth observing include:
- Basement
- Parking garage
- Ground floor
- Building entrance
- Exterior façade
- Common stairwell
- Structural areas visible without invasive work
Look for conditions such as:
- Extensive cracking
- Water penetration
- Exposed reinforcement
- Severe deterioration
- Unusual structural alterations
The purpose is not to diagnose structural performance.
The purpose is to identify issues that warrant professional assessment.
Moisture and Water Damage Deserve Attention
Water infiltration can be an important durability concern.
Basements and parking levels can reveal building conditions that are invisible inside a renovated apartment.
Look for:
- Persistent dampness
- Water stains
- Concrete deterioration
- Exposed steel
- Rust staining
A beautifully renovated apartment does not necessarily mean the building structure has been equally well maintained.
Corrosion Requires Professional Assessment
Steel reinforcement inside reinforced concrete structures is not intended to remain exposed to damaging environmental conditions.
If reinforcement is visibly exposed or significant deterioration is present, the issue should be evaluated professionally.
Do not attempt to estimate structural capacity based on appearance alone.
Do Not Use a Hammer Test or DIY Inspection as Proof of Safety
Some buyers try to judge concrete quality by:
- Tapping walls
- Looking at surface hardness
- Examining a small exposed section
These methods cannot establish the earthquake performance of an entire building.
AFAD emphasizes that earthquake resistance involves much more than concrete quality alone. Official AFAD material notes that sufficient concrete quality by itself is not enough; structural engineering, appropriate foundation selection, and compliance with applicable regulations all matter.
Therefore:
Concrete Strength Alone ≠ Building Earthquake Performance
Ground and Soil Conditions Should Be Reviewed
The building-permit documentation process can include a geological-geotechnical study report, alongside structural and architectural projects.
This information can be particularly important for understanding:
- Site conditions
- Foundation assumptions
- Ground-related engineering design
Foreign buyers should avoid attempting to interpret complex geotechnical documents without professional assistance.
The useful question is:
Was an appropriate geotechnical investigation performed, and does the structural design reflect the site conditions?
Soil Conditions Should Not Be Used to Rank Entire Districts Simplistically
A common online mistake is to create broad lists such as:
“This Istanbul district has good soil.”
Large districts can contain substantial variation.
The relevant technical investigation should focus on:
- Actual parcel
- Local geology
- Site investigation
- Foundation design
rather than relying only on the district name.
Foundation Type Should Be Verified in Context
Property marketing sometimes promotes:
- Raft foundation
- Pile foundation
- Deep foundation
as proof of superior earthquake safety.
But foundation selection is an engineering decision that should correspond to:
- Ground conditions
- Structural system
- Building loads
AFAD's own guidance emphasizes that earthquake-resistant construction depends on choosing a foundation system appropriate to the ground conditions.
Therefore:
There is no single foundation name that automatically makes every building earthquake-safe.
Check the Structural Project
Where available and relevant, a technical professional can review the building's approved structural project.
This may provide information about:
- Column arrangement
- Shear walls
- Beams
- Foundation
- Structural system
The buyer does not need to personally understand engineering drawings.
The value comes from allowing an appropriately qualified professional to compare documentation with the actual structure.
Check the Architectural Project Too
Architectural documentation is also useful because it can reveal whether substantial changes have occurred after construction.
For example:
Approved Project
may show:
- A residential ground floor
while:
Current Building
may contain:
- A large open commercial showroom
That discrepancy does not automatically mean structural elements were illegally altered.
But it is a reason to investigate further.
Developer Due Diligence for New Buildings
For a new apartment, due diligence shifts from deterioration toward construction quality and project history.
Investigate:
- Developer
- Main contractor
- Previous projects
- Building inspection
- Permit
- Occupancy status
- Technical specification
A professional developer should generally be able to provide clearer documentation than a seller who merely states:
“The building is new and earthquake resistant.”
Check the Contractor's Background
For newer developments and urban-transformation projects, contractor competence is relevant.
The Ministry currently provides systems and guidance through which contractor authorization and qualifications can be checked; for example, its urban-resilience program directs users toward the YAMBİS system when researching contractors.
For buyers, useful questions include:
- Has the contractor completed similar buildings?
- Are previous projects still performing well?
- Are technical and legal records available?
Building Inspection — Yapı Denetim
Türkiye also operates a formal building-inspection system.
The Ministry's current building-permit service standards include Yapı Denetim organization documentation for buildings subject to Law No. 4708.
This provides another relevant layer of project documentation.
However, a buyer should still avoid treating the existence of building-inspection paperwork as an absolute seismic guarantee.
The correct approach remains:
Documentation + Condition + Professional Review
Check the Current Use of the Building
A building designed for residential use may later experience changes in usage.
AFAD advises buyers to check whether the building is being used in accordance with its intended project and whether modifications were properly authorized.
Potential examples include:
- Apartments converted into workshops
- Ground floors converted into commercial premises
- Heavy equipment installed
- Major floor-plan changes
These situations should be investigated when relevant.
Ask the Building Management
Building management can sometimes provide useful history that is not obvious from the apartment itself.
Questions may include:
- Has structural strengthening ever been performed?
- Has Riskli Yapı assessment been requested?
- Have major repairs occurred?
- Has the basement experienced water problems?
- Have commercial units been modified?
- Has the building undergone urban-transformation discussions?
Management statements should not replace official records, but they can identify areas requiring further investigation.
Ask Existing Residents
Residents may also know practical information about:
- Previous earthquake damage
- Repairs
- Water penetration
- Structural work
- Developer problems
- Building maintenance
Again, this is contextual information rather than technical certification.
But consistent reports from multiple residents can help identify questions to take to engineers or lawyers.
What Documents Should an Earthquake-Conscious Buyer Request?
Depending on building age and transaction type, the buyer may investigate availability of documents such as:
Legal and Building Documents
- Title deed information
- Yapı Ruhsatı
- Yapı Kullanma İzin Belgesi / İskan
- Condominium status
Technical Documents
- Architectural project
- Structural project
- Geological-geotechnical study
- Building inspection records where applicable
- Technical specifications
Risk-Related Documents
- Existing Riskli Yapı determination if one exists
- Structural assessment reports
- Strengthening records
- Urban-transformation documents
Not every building will have every document readily available.
Missing information should increase the level of due diligence rather than automatically producing a conclusion.
Documents Are Not Enough
This point deserves emphasis.
A buyer can collect:
- Building permit
- İskan
- Structural drawings
- Title deed
and still have unanswered questions about the building's present condition.
Documents describe what was approved or recorded.
A physical building may later experience:
- Alterations
- Deterioration
- Damage
- Poor maintenance
Therefore:
Documents tell you the building's legal and technical history.
Inspection tells you about its current condition.
Both matter.
Physical Inspection Is Not Enough Either
The reverse is equally true.
A building may look excellent because it has recently received:
- New façade
- Paint
- Lobby renovation
- Landscaping
but legal or structural records may reveal issues not visible during a viewing.
Therefore:
Nice Appearance ≠ Verified Structural Safety
Property Valuation Is Still Not a Structural Inspection
A property valuation may examine:
- Location
- Market value
- Legal characteristics
- Building features
but it should not be confused with an engineering assessment of earthquake performance.
If seismic safety is a major concern, commission the appropriate technical review separately.
DASK Is Not Proof of Structural Safety
Compulsory earthquake insurance is important for covered properties, but having a DASK policy does not mean the building has been certified as structurally safe.
Insurance and structural assessment serve different purposes.
Therefore:
DASK Policy ≠ Earthquake Resistance Certificate
This distinction prevents buyers from using insurance documentation as a technical substitute.
A Practical Due-Diligence Sequence
A foreign buyer can organize the process in the following order.
Step 1 — Identify the Building
Collect:
- Exact address
- Parcel information where relevant
- Building age
- Developer / contractor
Step 2 — Review Legal Documents
Check:
- Title
- Building permit
- İskan
- Condominium status
AFAD specifically recommends confirming the existence of the building permit and occupancy permit.
Step 3 — Investigate Risky Building Status
Ask whether there has been a formal:
Riskli Yapı Tespiti
and verify official information where possible through the relevant Ministry/e-Devlet process.
Step 4 — Review Building History
Ask about:
- Major renovations
- Structural interventions
- Earthquake damage
- Strengthening
- Ground-floor alterations
Step 5 — Inspect Common Areas
Do not inspect only the apartment.
Look at:
- Basement
- Parking
- Ground floor
- Exterior
- Structural areas
Step 6 — Use a Qualified Professional Where Needed
If uncertainty remains, obtain an engineering assessment.
AFAD recommends competent and authorized testing where earthquake resistance is uncertain.
Step 7 — Separate Technical and Legal Conclusions
Ask the engineer about:
Structure
and the lawyer about:
Legal status and documentation
before committing to the purchase.
Red Flags That Require More Investigation
The following conditions do not automatically prove that a building is unsafe.
But they justify additional due diligence.
Missing Building Permit
Requires legal and technical investigation.
Missing İskan
Requires clarification before purchase.
Official Riskli Yapı Status
Requires serious legal and technical review.
Major Ground-Floor Alteration
Investigate structural modifications.
Unexplained Column or Wall Changes
Seek professional assessment.
Significant Water Damage
Investigate durability and structural condition.
Visible Reinforcement or Concrete Deterioration
Seek engineering review.
Conflicting Building Age Information
Verify official records.
Seller Refuses to Provide Documentation
Proceed cautiously.
Agent Claims “100% Earthquake-Safe” Without Evidence
Ask for technical documentation.
What Should Not Automatically Stop a Purchase?
Due diligence should be evidence-based rather than emotional.
The following factors are not automatically reasons to reject an apartment.
Older Building
Needs investigation, not automatic rejection.
Ground-Floor Shop
Common in Istanbul; investigate modifications.
Small Cosmetic Cracks
May be non-structural; obtain professional advice if uncertain.
Resale Property
Existing buildings can often provide more observable history than off-plan properties.
Building Without an Existing Risk Report
This does not prove safety or danger; it may simply mean no official Riskli Yapı process has been initiated.
When Should You Walk Away?
A buyer may reasonably decide not to proceed when material questions remain unresolved.
Examples could include:
- Serious structural concerns
- Missing essential documentation
- Confirmed risky-building status incompatible with buyer objectives
- Unauthorized major modifications
- Developer refusing technical transparency
- Inability to obtain independent professional review
Sometimes the best due-diligence outcome is not negotiating a lower price.
It is choosing a different building.
Key Takeaways
Earthquake-conscious property due diligence in Istanbul should be based on evidence rather than marketing language.
AFAD specifically recommends verifying the presence of the building permit and occupancy permit, investigating structural modifications, and obtaining testing from competent and authorized organizations when earthquake resistance is uncertain.
The building permit can provide access to a technical and legal project history that may include architectural, structural, and geological-geotechnical documentation.
The Yapı Kullanma İzin Belgesi, or İskan, is an important indicator that the structure was completed according to its approved project and the relevant completion process, but it should not be confused with an absolute earthquake-safety guarantee.
Türkiye also provides a formal Riskli Yapı Tespiti mechanism under Law No. 6306. The service exists through e-Devlet, while official assessments are conducted by institutions authorized under the applicable framework.
Most importantly:
The absence of an existing Riskli Yapı report does not mean that the building has already been tested and declared safe.
A good buyer should combine:
Official Documents + Building History + Physical Inspection + Professional Engineering Review
rather than relying on a single certificate, building age, district, or sales claim.
The objective is not to find a document saying:
“This apartment is perfectly safe.”
The objective is to collect enough independent evidence to make a rational assessment of the building before investing substantial capital.
New Build vs Resale for Earthquake-Conscious Buyers
One of the most common questions foreign buyers ask is:
Should I buy a new apartment in Istanbul instead of an older resale property because of earthquake risk?
New construction can provide important advantages, particularly because recently permitted buildings are more likely to have been designed under Türkiye's current earthquake regulation, which was published in 2018 and became effective on January 1, 2019. (afad.gov.tr)
But the correct conclusion is not:
New = Safe
and:
Old = Unsafe
A better comparison is:
New Build → Newer regulatory framework, but verify execution
Older Resale → Greater building history, but investigate condition and structural performance
Advantages of New-Build Apartments
New developments can provide several advantages for earthquake-conscious buyers.
Newer Seismic Design Framework
Recently designed buildings are more likely to fall under the current Türkiye Building Earthquake Code.
The regulation includes requirements relating to:
- Ground motion
- Structural systems
- Reinforced concrete
- Foundations
- Soil conditions
- Existing-building assessment
- Strengthening. (afad.gov.tr)
This provides a more modern regulatory framework than buildings designed decades earlier.
Modern Ground Investigation
New developments should be evaluated together with their geotechnical and foundation documentation rather than only by building age.
The current regulatory framework considers both the structural system and site conditions. (afad.gov.tr)
Better Access to Documentation
With a professional developer, buyers may have easier access to:
- Building permit
- Technical specifications
- Construction information
- Developer records
- Contractor information
- Building-inspection documentation
This can make due diligence more transparent.
Limitations of New-Build Apartments
New construction should not be accepted uncritically.
A building can have modern engineering drawings while the buyer still needs to consider:
- Construction quality
- Developer competence
- Material execution
- Site supervision
- Alterations during construction
- Final completion documentation
The existence of a modern regulation establishes design and construction requirements; it does not remove the need to verify how a specific project was actually built. (afad.gov.tr)
Advantages of Resale Apartments
Older apartments can offer benefits that new construction cannot.
A completed building has an observable history.
A buyer may be able to investigate:
- Maintenance
- Previous repairs
- Basement condition
- Water penetration
- Common areas
- Structural alterations
- Building management
- Previous strengthening
- Urban transformation discussions
An older building may therefore provide more historical evidence than an off-plan project that has not yet been completed.
Limitations of Older Buildings
Older properties can require significantly deeper technical investigation.
Potential concerns include:
- Earlier design standards
- Aging materials
- Corrosion
- Poor maintenance
- Unauthorized alterations
- Changes to ground-floor commercial spaces
- Incomplete records
AFAD specifically advises buyers and tenants to check building permits and occupancy documentation, investigate later structural modifications, and seek testing from competent and authorized organizations when earthquake resistance is uncertain. (afad.gov.tr)
New Build vs Older Resale Comparison
| Factor | New Build | Older Resale |
|---|---|---|
| Current Earthquake Code | More likely applicable | Depends on construction period |
| Structural History | Limited | Longer observable history |
| Modern Engineering | More common | Depends on building |
| Documentation | Often easier to access | Can be incomplete |
| Material Deterioration | Usually lower initially | Needs investigation |
| Unauthorized Alterations | Less likely initially | Possible |
| Renovation | Usually lower | Can be substantial |
| Building Management History | Limited | Observable |
| Purchase Price | Often higher | May be lower |
| Technical Due Diligence | Still required | Often more important |
The strongest conclusion is:
Newer is an advantage, not a safety certificate. Older is a risk factor to investigate, not an automatic reason to reject a property.
Urban Transformation in Istanbul
Earthquake risk and urban transformation are closely connected in Istanbul.
Türkiye's Law No. 6306 on the Transformation of Areas Under Disaster Risk provides the legal framework used for transforming buildings and areas identified within the relevant disaster-risk system.
Current Ministry programs continue to provide financing and administrative mechanisms for owners of buildings that have been formally identified as risky under Law No. 6306. (kentseldirenclilik.csb.gov.tr)
For property investors, urban transformation can create both:
Opportunity
and
Risk
depending on the stage of the property.
What Is a Riskli Yapı?
A Riskli Yapı is a building formally identified as risky under the applicable Law No. 6306 process.
As covered in Part 2, these determinations are not simply informal opinions from a property agent or contractor.
The Ministry maintains a system of authorized organizations for formal risky-building assessments, and its current urban-resilience guidance directs owners toward licensed organizations for assessments under Law No. 6306. (kentseldirenclilik.csb.gov.tr)
A buyer should therefore distinguish between:
- Building described informally as “old”
- Building privately inspected by an engineer
- Building formally classified as Riskli Yapı
These are not equivalent situations.
Riskli Yapı vs Riskli Alan
Another important distinction is between an individual risky building and a formally designated risky area.
The Ministry's Marmara Urban Transformation Directorate states that buildings located within an officially declared Riskli Alan do not necessarily require individual Riskli Yapı determinations in order for transformation procedures to apply at area level. (istanbulakdm.csb.gov.tr)
For a foreign buyer, this means due diligence should consider both:
The building
and
the legal status of the surrounding transformation area
where applicable.
Should You Buy an Apartment in a Risky Building?
This requires extreme caution.
A property in a formally identified risky building may be connected with:
- Transformation procedures
- Evacuation
- Demolition
- Reconstruction
- Owner negotiations
- Contractor selection
- Temporary loss of use
The Ministry's current programs specifically distinguish buildings already identified as risky under Law No. 6306 and provide mechanisms for their transformation. (kentseldirenclilik.csb.gov.tr)
Such a property may theoretically present redevelopment opportunity, but it is not a conventional ready-to-use investment.
A buyer should understand:
- Existing legal status
- Ownership rights
- Transformation decisions
- Contractor agreement
- Financing requirements
- Temporary accommodation
- Expected reconstruction timeline
before purchasing.
Legal and technical advice is particularly important.
Should You Buy in an Urban Transformation Project?
This is a different scenario.
Instead of buying an apartment inside an existing risky structure, the investor may be purchasing a new replacement development created through urban transformation.
Such projects can be attractive because they may combine:
- New construction
- Modern earthquake regulations
- New infrastructure
- Improved parking
- Better apartment layouts
- Neighborhood renewal
But they can also carry many of the same risks as other off-plan developments.
Potential Advantages
New Structural Design
Replacement buildings can be designed according to current seismic standards.
Neighborhood Renewal
Urban transformation can improve:
- Streets
- Building quality
- Housing stock
- Public environment
Modern Residential Standards
New projects may provide:
- Parking
- Elevators
- Security
- Better insulation
- Modern mechanical systems
Potential Risks
Developer Risk
The quality of transformation depends heavily on the contractor.
Current Ministry urban-resilience programs use contractor qualification criteria and direct owners toward the YAMBİS system to research contractors. (kentseldirenclilik.csb.gov.tr)
Construction Delay
Transformation can involve a long period between demolition and final delivery.
Owner Disputes
Multi-owner apartment buildings can create complex decision-making environments.
Financial Contributions
Owners may need to contribute additional capital depending on the redevelopment arrangement.
Investment Pricing
A new urban transformation apartment can be sold at a significant premium compared with older surrounding stock.
Urban Transformation Does Not Automatically Mean Good Investment
The words:
Urban Transformation Project
can sound highly attractive in property marketing.
But investors should still evaluate:
- Developer
- Location
- Apartment
- Purchase price
- Delivery
- Contract
- Future supply
- Rental demand
The fact that a project replaces older housing does not automatically make its price attractive.
A well-engineered new apartment can still be a poor financial investment if purchased at an excessive price.
Earthquake Safety and Property Value
Earthquake-related building quality can influence buyer confidence and therefore potentially affect marketability.
However, it would be misleading to claim that:
“Earthquake-resistant apartments are always X% more valuable.”
There is no universal premium.
Value depends on multiple factors, including:
- District
- Building age
- Documentation
- Construction quality
- Developer reputation
- Transportation
- Apartment size
- View
- Market conditions
For many buyers, particularly after major earthquake events, structural due diligence may become more important in the decision process.
This can strengthen demand for properties where technical quality is easier to demonstrate.
Earthquake Safety and Resale Liquidity
Resale liquidity is the ability to sell a property within a reasonable period without requiring an excessive discount.
Building condition can influence this.
Imagine two apartments with similar:
- Location
- Size
- Floor
- View
Apartment A is inside a well-documented newer building with clear permits and good maintenance.
Apartment B is in an older building with:
- Unclear documentation
- Major unauthorized modifications
- Ongoing transformation discussions
Even if Apartment B is cheaper, future buyers may require:
- Greater due diligence
- More negotiation
- Larger discount
That can reduce liquidity.
Earthquake Due Diligence Is Financial Due Diligence
Structural concerns are not separate from investment analysis.
They can affect:
- Purchase price
- Renovation budget
- Insurance
- Rental continuity
- Resale
- Reconstruction
- Opportunity cost
A buyer considering rental investment should ask:
Could a building-related issue prevent me from renting, occupying, or selling this apartment later?
If the answer is unclear, the property risk has not been fully evaluated.
DASK and Earthquake Safety
Türkiye's Compulsory Earthquake Insurance system—DASK—is an important part of property ownership.
For covered buildings, compulsory earthquake insurance must be maintained and renewed annually under the applicable insurance legislation. (dask.gov.tr)
DASK covers specified direct material damage caused by earthquakes and earthquake-related:
- Fire
- Explosion
- Tsunami
- Landslide
within the policy limits. Covered building components include foundations, main walls, floors, stairs, roofs, and other specified structural and complementary parts. (dask.gov.tr)
DASK Does Not Mean a Building Is Structurally Safe
This is one of the most important misconceptions to avoid.
A DASK policy is an insurance contract.
It is not:
- Structural inspection
- Riskli Yapı assessment
- Engineering report
- Earthquake resistance certificate
Therefore:
DASK Policy ≠ Structural Safety Certification
A buyer should maintain the required insurance while conducting building due diligence separately.
DASK Coverage Has Limits
DASK coverage should also not be confused with comprehensive home insurance.
The compulsory policy primarily protects against specified earthquake-related building damage within the applicable coverage limit.
DASK's official documentation identifies building components covered and also lists circumstances and buildings outside the compulsory insurance scope. (dask.gov.tr)
Depending on the owner's needs, additional voluntary insurance may be appropriate for:
- Contents
- Additional building value
- Liability
- Other household risks
Interesting 2026 DASK Cost Factors
The current DASK tariff published for 2026 determines premiums according to factors including:
- Risk group
- Construction type
- Insured value. (dask.gov.tr)
The current tariff also applies an additional 10% premium increase to buildings whose building-permit year is before 2000, while separate adjustments can apply based on floor count. (dask.gov.tr)
This does not mean DASK has declared every pre-2000 building unsafe.
It simply demonstrates that building characteristics can influence insurance pricing.
DASK Exclusions Highlight Why Structural Due Diligence Matters
DASK's general conditions exclude certain building categories from standard compulsory coverage, including buildings determined to have been modified or weakened in ways negatively affecting their structural systems and buildings constructed contrary to relevant rules in ways affecting the structural system. (dask.gov.tr)
For buyers, this reinforces an important principle:
Unauthorized structural intervention is not merely a cosmetic issue.
It can have implications far beyond appearance.
Best Strategy for Earthquake-Conscious Foreign Buyers
There is no single ideal strategy for every buyer.
Different risk tolerances lead to different approaches.
Conservative Strategy
A conservative buyer may prioritize:
- Newer completed building
- Current permits
- İskan
- Kat Mülkiyeti
- Reputable developer
- Clear documentation
- No known Riskli Yapı status
- Professional technical review
This approach may require paying more for the apartment but reduces uncertainty.
Balanced Strategy
A balanced investor may consider:
- Relatively modern resale buildings
- Strong location
- Complete documentation
- Good maintenance
- Engineering review where necessary
This can potentially provide a better balance between:
Price + Location + Technical Confidence
Value Strategy
A more experienced investor may investigate older properties where:
- Purchase price is attractive
- Building documentation exists
- Structural concerns have been professionally assessed
- Urban transformation potential is understood
But this strategy requires much more technical and legal due diligence.
It should not be based on:
“The apartment is cheap.”
Earthquake Safety Should Be Part of the Offer Price
Technical findings can influence negotiation.
Suppose an apartment requires:
- Structural investigation
- Major common-area repairs
- Future strengthening
- Significant building maintenance
The appropriate investment price may differ from that of a comparable apartment in a building without the same issues.
Do not treat technical due diligence only as a yes/no decision.
It can also influence:
What the property is worth to you.
Common Earthquake Property Buying Mistakes
Several mistakes repeatedly appear in earthquake-conscious property searches.
Assuming Every New Building Is Safe
Newer regulation is an advantage, not proof of perfect execution.
Assuming Every Old Building Is Dangerous
Older buildings require more investigation, not automatic rejection.
Choosing a District Instead of Evaluating the Building
District-level risk cannot replace property-specific assessment.
Believing “Earthquake Resistant” Marketing
Ask for technical evidence.
Believing “Built According to Regulation” Is Enough
Investigate:
- Permit
- Contractor
- Construction
- Current condition
Using a Valuation Report as Structural Certification
Property valuation and structural engineering have different purposes.
Using DASK as Proof of Safety
Insurance does not certify earthquake resistance.
Ignoring Structural Alterations
Changes to columns, load-bearing walls, or other structural components deserve professional review.
Ignoring the Ground Floor
Commercial modifications can sometimes justify further investigation.
Focusing Only on Visible Cracks
Some cracks are cosmetic.
Some important structural concerns may not be visible.
Professional assessment matters.
Ignoring Moisture and Corrosion
Basements and parking levels can reveal long-term maintenance problems.
Buying Off-Plan Without Reviewing Technical Information
A new building that does not yet exist still requires developer and project due diligence.
Buying a Risky Building Without Understanding Transformation
A low purchase price may come with significant legal, financial, and occupancy uncertainty.
Paying a Large Premium for “Earthquake-Safe”
Safety claims must be supported by evidence.
A premium should not be paid simply because of marketing language.
Frequently Asked Questions About Earthquake-Safe Apartments in Istanbul
Are new apartments in Istanbul earthquake-safe?
New apartments may benefit from newer seismic regulations and modern engineering.
However, no building should be considered automatically safe solely because it is new.
Construction quality, ground conditions, structural design, permits, and execution should still be evaluated.
Are buildings built after 2019 safer?
Buildings designed and permitted under the current earthquake regulation benefit from the updated regulatory framework that became effective on January 1, 2019. (afad.gov.tr)
However:
Post-2019 ≠ Guaranteed Safe
The specific building still requires due diligence.
Which Istanbul districts are safest from earthquakes?
A district ranking alone is not sufficient to determine the safety of a particular apartment building.
Different buildings within the same district may have different:
- Construction dates
- Ground conditions
- Structural systems
- Maintenance
- Engineering quality
The property itself should be evaluated.
How can I check whether a building is earthquake-resistant?
Start with:
- Construction year
- Building permit
- İskan
- Structural history
- Building condition
- Riskli Yapı information
and obtain qualified engineering advice when appropriate.
AFAD recommends competent and authorized testing where earthquake resistance is uncertain. (afad.gov.tr)
What is Riskli Yapı Tespiti?
It is the formal risky-building determination process used under Law No. 6306.
Assessments are performed through organizations authorized under the applicable Ministry framework. (kentseldirenclilik.csb.gov.tr)
Does every Istanbul building have an earthquake report?
No.
A building may never have undergone a formal Riskli Yapı assessment.
Therefore:
No report ≠ Passed safety test
Can a foreign buyer hire a structural engineer?
A buyer can seek independent technical expertise before purchasing.
However, private engineering advice and the formal Riskli Yapı process under Law No. 6306 should not be confused.
Is an earthquake report mandatory when buying property?
There is no basis for assuming every ordinary property sale automatically comes with a formal Riskli Yapı report.
If the buyer requires structural certainty, additional technical investigation may need to be commissioned.
Is a valuation report an earthquake-safety report?
No.
Valuation assesses property and market-related characteristics.
Structural assessment requires engineering expertise.
Are old buildings unsafe?
Not automatically.
Older buildings deserve greater investigation because of:
- Earlier regulations
- Deterioration
- Alteration history
but age alone does not determine structural performance.
Should I buy only new construction?
Not necessarily.
A well-maintained, technically evaluated resale building can still be attractive.
The decision should consider:
- Structure
- Location
- Price
- Documentation
- Investment objective
What is urban transformation?
Urban transformation under frameworks such as Law No. 6306 involves replacing or transforming buildings or areas connected with disaster risk.
Current Ministry programs continue to support transformations of properties formally identified as risky under this framework. (kentseldirenclilik.csb.gov.tr)
Is an urban transformation apartment a good investment?
It can be.
Potential advantages include:
- New construction
- Modern design
- Neighborhood renewal
but buyers should also evaluate:
- Developer
- Delivery
- Contract
- Purchase price
just as they would with any off-plan investment.
Is DASK proof that my building is safe?
No.
DASK is compulsory earthquake insurance for properties within its legal scope.
It protects against specified financial losses; it is not a structural safety certificate. (dask.gov.tr)
Does earthquake safety affect resale value?
Building quality, age, documentation, maintenance, and buyer confidence can influence marketability.
There is no universal percentage premium that applies to every earthquake-conscious property.
Should I hire a structural engineer before buying?
For buildings with:
- Uncertain history
- Older construction
- Significant deterioration
- Structural modifications
- Incomplete documentation
independent engineering advice can be particularly valuable.
Final Earthquake-Safety Buyer Checklist
Before purchasing an apartment in Istanbul, work through the following checklist.
Building Identity
Legal Documentation
Risk Status
Technical Documentation
Building Condition
Alterations
Professional Due Diligence
New-Build Property
Resale Property
Insurance
Investment
If several major items remain unanswered, the property requires further due diligence before purchase.
Conclusion
Buying an earthquake-safe apartment in Istanbul should not mean searching for a property carrying an “earthquake-resistant” label.
It should mean making a disciplined effort to understand the building.
Istanbul is exposed to meaningful earthquake risk, and Türkiye has developed increasingly detailed systems covering:
- Seismic design
- Building assessment
- Risky-building identification
- Urban transformation
- Compulsory earthquake insurance. (afad.gov.tr) (kentseldirenclilik.csb.gov.tr)
The current Türkiye Building Earthquake Code became effective on January 1, 2019 and provides an important modern regulatory framework for structural and seismic design. (afad.gov.tr)
But regulation alone is not enough.
A responsible buyer should investigate:
Building Design
Construction Quality
Ground Conditions
Foundation
Documentation
Current Condition
Alteration History
Professional Assessment
The same principle applies to building age.
Newer does not automatically mean safe.
And:
Older does not automatically mean dangerous.
New buildings may benefit from newer codes and documentation but still require verification of construction and developer quality.
Older buildings may provide strong locations, larger apartments, and attractive prices but generally require deeper technical investigation.
Urban transformation can also create opportunities to obtain modern housing in established neighborhoods, but those investments should be evaluated with the same discipline applied to other new-build and off-plan developments.
DASK should also remain part of the ownership strategy. For covered properties, compulsory earthquake insurance must be maintained and protects against specified earthquake-related financial damage within policy conditions and limits. (dask.gov.tr)
But:
Insurance is not structural certification.
The most important principle of this entire guide is therefore:
Do not buy a building because someone tells you it is earthquake-safe. Verify the evidence supporting that conclusion.
A strong earthquake-conscious property decision can be summarized as:
Current Engineering Standards + Appropriate Ground and Foundation Design + Quality Construction + Clear Documentation + Good Maintenance + Independent Due Diligence
No property investment can remove all earthquake risk.
The objective is to understand that risk, avoid unnecessary exposure, and make a purchasing decision based on evidence rather than assumptions.
For a foreign buyer investing substantial capital in Istanbul, that is not merely structural due diligence.
It is essential investment risk management.
