Why seismic safety belongs at the top of the due diligence checklist
Swedish investors evaluating real estate or construction projects in Türkiye typically begin with yield calculations, currency exposure, and contractor selection. Seismic risk management is often treated as a technical afterthought handled by engineers rather than a governance issue that belongs on the investment committee's agenda. Given Türkiye's seismic geography and the regulatory overhaul that followed the 2023 earthquakes, this ordering deserves to be reversed.
Sweden itself sits in a low-seismicity zone, so Swedish investors and developers rarely build seismic due diligence muscle at home. That gap matters more in Türkiye than in most other emerging markets on an advisory firm's radar, because seismic compliance in Türkiye is not a single checkbox. It is a layered system of code requirements, inspection regimes, and insurance obligations that changes how a project is designed, priced, and timed.
The regulatory framework has tightened materially
Türkiye's building code (Türkiye Bina Deprem Yönetmeliği) was substantially revised in 2018 and enforcement has intensified since 2023, particularly around soil classification, structural system selection, and third-party inspection accountability. Municipalities and the relevant ministry have increased scrutiny of yapı denetim (independent building inspection) firms, and several inspection companies have faced license suspensions following post-earthquake investigations. For a Swedish investor, this means the inspection firm attached to a project is now a due diligence item in its own right, not a formality satisfied once at permitting stage.
Soil survey requirements (zemin etüdü) have also become stricter, with more rigorous geotechnical reporting required before permits are issued in many provinces. This has lengthened permitting timelines in some regions and increased upfront engineering costs, a factor that should be built into project budgets and schedules from the outset rather than discovered mid-process.
What this means for site selection
Seismic zoning in Türkiye varies significantly by region and even by district, and this variation should influence where a Swedish investor chooses to deploy capital, not just how a chosen site is engineered. Coastal Aegean and Marmara regions, popular with foreign buyers for lifestyle and rental appeal, carry higher seismic classifications than parts of the Mediterranean or interior Anatolia. This does not rule these regions out. It does mean that structural specification, foundation type, and insurance cost should factor into comparative site analysis alongside price per square metre and rental yield.
Practical implication : A lower acquisition price in a higher-risk zone can be offset, or eliminated, by higher structural costs, higher DASK (mandatory earthquake insurance) premiums, and longer permitting review. Modelling total project cost without this adjustment produces an incomplete comparison.
Insurance and disclosure
Mandatory earthquake insurance (DASK) is a baseline requirement for residential property, but institutional investors and developers should also examine voluntary supplemental coverage, particularly for larger commercial or mixed-use assets where DASK's coverage caps are insufficient. Swedish insurers are generally unfamiliar with the Turkish earthquake insurance market, so local broker relationships and realistic premium projections should be established early rather than assumed.
Disclosure practices around a building's structural history, including any prior damage assessment, retrofit work, or inspection findings, are improving but remain inconsistent across the resale market. For acquisitions of existing buildings rather than new development, commissioning an independent structural assessment before closing is now standard practice among sophisticated foreign buyers, and Swedish investors should treat it as non-negotiable rather than optional.
Working with the right technical partners
The practical takeaway for Swedish investors is that seismic compliance in Türkiye requires technical partners who understand both the letter of the current code and how enforcement is actually applied at the municipal level, which can vary. An advisory relationship that bridges Swedish investment standards with Turkish structural and regulatory practice, verifying inspection firm credentials, reviewing soil reports critically, and stress-testing insurance assumptions, reduces the risk that seismic considerations surface as a costly surprise after capital has already been committed rather than as a planned input to the investment decision.