Earthquake Safety When Buying Property in Turkey 2026

Buying an apartment in Istanbul or a villa on the Turkish coast is one of the most common reasons foreigners engage with Turkish law. Yet after the devastating February 2023 Kahramanmaraş earthquakes, one question now sits above all others for any serious buyer: is the building actually safe? Earthquake safety when buying property in Turkey is no longer a technical afterthought — it is a legal due-diligence obligation that can determine whether your investment holds its value or collapses with it. This 2026 guide explains the building-safety laws, the documents you must verify, and the remedies available if a structure turns out to be non-compliant.

Key Takeaways: What You Need to Know

• Since 2019, all new construction must comply with the Turkish Building Earthquake Regulation (TBDY 2018), enforced through the mandatory building-inspection system under Law No. 4708.

• Two documents matter most: the building permit (yapı ruhsatı) and the occupancy permit (yapı kullanma izin belgesi, or iskan). Never buy without seeing both.

• Older buildings can be classified as "risky" (riskli yapı) under Urban Transformation Law No. 6306, which may trigger demolition and rebuilding obligations that pass to the new owner.

• Compulsory earthquake insurance (DASK) is legally required and is often a precondition for utility connections and title transactions.

• Building-inspection firms carry a 15-year structural liability, and developers can be sued for construction defects under the Turkish Code of Obligations (TBK).

Why Earthquake Safety Is a Legal Issue, Not Just Engineering

Turkey sits on some of the world's most active fault lines. The 1999 Marmara earthquake killed roughly 17,000 people and exposed decades of non-compliant construction. The February 6, 2023 Kahramanmaraş sequence, which brought down tens of thousands of buildings across southern Turkey, confirmed that the problem was never purely geological — it was legal and administrative, rooted in weak enforcement and repeated construction amnesties.

For a foreign buyer, this changes the risk calculus entirely. A title deed (tapu) confirms who owns a property; it says nothing about whether the structure meets seismic code. In our experience representing foreign investors, the buyers who suffer losses are almost always those who verified ownership but never verified structural compliance. This is why proper real estate due diligence in Turkey must extend beyond the title register to the building's engineering and permit file.

The Legal Framework Governing Building Safety in Turkey

The Turkish Building Earthquake Regulation (TBDY 2018)

The Turkish Building Earthquake Regulation (Türkiye Bina Deprem Yönetmeliği, TBDY 2018), prepared by AFAD, the Disaster and Emergency Management Presidency, entered into force on January 1, 2019. It sets mandatory seismic-design standards and applies to new construction as well as to existing buildings undergoing retrofitting or a change of use. Buildings permitted before 2019 were designed under earlier, weaker codes — notably the 1998 and 2007 regulations — which is why the construction date is a critical data point for any purchase decision.

Building Inspection Law No. 4708 (Yapı Denetimi)

Enacted in 2001 after the 1999 Marmara disaster and applied nationwide since 2011, the Building Inspection Law (Yapı Denetimi Hakkında Kanun No. 4708) requires an independent, licensed inspection firm (yapı denetim kuruluşu) to supervise construction at every stage. Under the law, these firms bear liability toward the owner and the state for structural defects for 15 years. When you buy, the inspection file is your evidence that the build was independently supervised — and your basis for a future claim if it was not.

Urban Transformation Law No. 6306

Law No. 6306 on the Transformation of Areas Under Disaster Risk (Afet Riski Altındaki Alanların Dönüştürülmesi Hakkında Kanun) empowers the state to identify "risky buildings" (riskli yapı) and require their strengthening or demolition and reconstruction. Recent amendments, including Law No. 7471, expanded the state's evacuation and demolition powers and refined the incentive framework. A national urban-transformation campaign continues into 2026, so buyers should confirm whether a target building already carries a risky-building determination before committing.

Concerned about a specific building in Istanbul or elsewhere in Turkey? Our real estate lawyer in Turkey team can pull the permit and inspection records and flag red flags before you sign. Contact Istanbul Attorneys: +90 544 809 1942 | WhatsApp https://wa.me/905448091942.

The Documents Every Foreign Buyer Must Verify

Building Permit and Occupancy Permit

Two municipal documents form the backbone of legal compliance. The building permit (yapı ruhsatı) authorizes construction to approved plans, while the occupancy permit (yapı kullanma izin belgesi, commonly called iskan) certifies that the completed building matches those plans and passed final inspection. A property without iskan may have been built or altered outside its permit — a serious red flag for both safety and future resale.

Inspection Records, Soil Survey and Insurance

Beyond the permits, request the building-inspection file, the ground/soil survey (zemin etüdü), and proof of an active DASK policy. Compulsory Earthquake Insurance (Zorunlu Deprem Sigortası), administered through DASK under Disaster Insurance Law No. 6305, is mandatory for most residential units and is frequently required to complete the TAPU (title deed) transfer process. Note that DASK covers structural loss only up to a state-set ceiling, not full market value, so private supplementary cover is often prudent.

The core checklist below is what our lawyers verify on a standard residential purchase:

• Yapı Ruhsatı (Building Permit): proves the construction was legally authorized; unpermitted builds risk demolition orders.

• İskan (Occupancy Permit): certifies the finished building matches approved plans; its absence signals possible code violations.

• Yapı Denetim File: confirms independent inspection during construction and underpins the 15-year defect liability.

• Zemin Etüdü (Soil Survey): shows the ground was assessed for seismic design; weak or poorly assessed ground raises collapse risk.

• DASK Policy: an active compulsory earthquake insurance policy, legally required and often needed to transact.

Risky Buildings and Urban Transformation Zones

Under Law No. 6306, an owner or the state can request a risky-building test (riskli yapı tespiti) from a licensed body. If a building is formally declared riskli yapı, owners are notified and given a statutory period to decide on strengthening or demolition; failure to act can lead to state-ordered demolition. Crucially for buyers, this status attaches to the property, not the previous owner — if you buy, you inherit the transformation obligation.

This matters even for investment-driven purchases. Many foreign buyers acquire property precisely to qualify for Turkish citizenship by investment, but citizenship eligibility does not certify that a building is seismically sound. A discounted "bargain" apartment is sometimes cheap precisely because it sits in a transformation zone or already carries a risky-building record. Always check the building's status through the municipality or the relevant ministry files before you sign.

Legal Remedies If a Building Turns Out to Be Unsafe

If you discover after purchase that a building is defective or non-compliant, Turkish law offers several routes. Against the seller, you may have claims for hidden defects (ayıplı ifa) under the Turkish Code of Obligations (Türk Borçlar Kanunu, TBK arts. 219 et seq.). Against the developer and the building-inspection firm, the 15-year structural liability under Law No. 4708 and general tort principles support construction defect and compensation claims. Where collapse or injury results from proven negligence, criminal liability under the Turkish Penal Code (TCK) may also arise. These are fact-intensive cases, and early evidence preservation is decisive.

Frequently Asked Questions

Can foreigners check a building's earthquake risk before buying in Turkey?

Yes. You can obtain the building permit and occupancy permit, review the inspection file, commission an independent engineering assessment, and request a risky-building test under Law No. 6306. A local lawyer can gather these records on your behalf before you commit.

Is earthquake insurance mandatory when buying property in Turkey?

Compulsory earthquake insurance (DASK) is legally required for most residential units and is generally needed to transfer title and connect utilities. It covers structural loss up to a state ceiling, so many owners add private cover.

What is the difference between a building permit and an occupancy permit?

The building permit (yapı ruhsatı) authorizes construction, while the occupancy permit (iskan) certifies that the finished building matches approved plans and passed final inspection. Buying without iskan is a significant legal and safety risk.

Does a "risky building" status pass to a new owner?

Yes. A risky-building determination under Law No. 6306 attaches to the property itself. If you buy, you inherit the strengthening or transformation obligations, so you must verify status before signing.

Are buildings constructed before 2019 automatically unsafe?

Not automatically, but they were designed under older seismic codes. An earlier construction date should trigger closer scrutiny and, ideally, an independent structural assessment before purchase.

Can I sue if my newly bought apartment has structural defects?

Potentially yes — against the seller for hidden defects under the TBK, and against the developer and inspection firm under the 15-year liability in Law No. 4708. Evidence and timing are critical, so consult a lawyer promptly.

Contact Istanbul Attorneys for Property Safety Advice

At Istanbul Attorneys, our English-speaking legal team helps foreign buyers verify building safety, review permits, and structure secure property purchases across Turkey. Reach out to our team for case-specific guidance before you commit to a purchase.

Phone: +90 544 809 1942 | Email: info@istanbulattorneys.com | WhatsApp: https://wa.me/905448091942

Visit us at: Gürsel Mah. Karataş Sk. SNS Plaza Kat:3 No:6, Kağıthane / İstanbul, Turkey.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. For case-specific guidance, please consult with our attorneys.