Structural inspection before buying property in Türkiye
A structural inspection is not a generic statement that a building is “solid”, and it cannot be inferred from construction year or an earthquake-map colour. It is an engineering process that must identify the exact building, define the scope of work and use observations, measurements and analysis proportionate to the question being answered. A visual screening may be enough to identify reasons for escalation, but it is not the same as a detailed seismic-performance assessment and it is not the same as the formal risky-building process under Law No. 6306.
1. Confirm building identity before reading the conclusion
Start with the address, parcel identifiers, block, storey count and the unit or building portion covered by the report. Technical reports are often circulated as separate PDF files, and a genuine report can relate to another block in the same complex or to an earlier condition before alteration or strengthening. Do not rely on a conclusion until photographs, plans, samples and recorded observations have been tied to the exact building being acquired.
2. Read the scope before the report title
Ask what the engineer actually did. Was it a visual visit, document review, member-dimension survey, reinforcement detection, concrete sampling, soil investigation, analytical model or a formal performance assessment under the earthquake code? A marketing label such as “earthquake test” does not define a method. The conclusion must stay within what the work performed can support. An inspection report should not be treated as a performance report if it did not collect and analyse the information needed for that purpose.
3. Understand the role of the Turkish Building Earthquake Code
The current code covers new-building design as well as evaluation and strengthening design for existing buildings, with Chapter 15 dedicated to existing-building systems. Such evaluation can require information about the structural system, material properties, detailing, testing and analysis. The code references standards for concrete core sampling and compressive-strength determination. This does not mean that every home purchase requires cores; it means that the engineer should select testing based on the building, available evidence and decision question rather than a buyer or salesperson prescribing a test automatically.
4. Start with documents before destructive testing
Collect available approved structural and architectural projects, construction permit, occupancy permit, soil and foundation study, later project revisions, strengthening files, repair records and previous damage reports. Compare documents with reality. Differences in storey count, ground-floor use, large openings or structural layout can materially change the engineering review. Good documentation reduces uncertainty but never eliminates the need to observe the actual building.
5. What does a visual structural review look for?
An engineer considers the load path, structural system and possible irregularities such as a weak or highly open storey. Observations may include cracks in columns, beams or structural walls, concrete spalling, exposed or corroded reinforcement, settlement or tilt, persistent moisture, unexplained repair patches, new openings and apparent alterations of load-bearing elements. A visual sign is not a final diagnosis. A crack may be structural, shrinkage-related or confined to finishes; its value is that it helps determine what should be measured, monitored or analysed next.
6. When are measurements and tests needed?
If original records are missing, material quality is uncertain, plans conflict with the building, significant defects exist or the purchase decision depends on a specific structural-capacity question, the engineer may design a programme of member measurements, reinforcement detection, concrete sampling or other appropriate tests. Report quality is not measured by the number of cores. A poorly located sample without a coherent analysis plan does not answer the building-level question, and test results must be interpreted within the whole structural system.
7. Separate private due diligence from formal Riskli Yapı determination
The implementing regulation for Law No. 6306 defines a risky building as one that, on scientific and technical evidence, has completed its economic life or is found to face collapse or severe-damage risk. The formal process follows the Risky Building Determination Principles and uses licensed bodies and the official electronic workflow. Owners may request a determination under those rules. A private engineering report commissioned by a buyer is not automatically a formal riskli yapı decision and does not by itself create the same administrative consequences.
8. Absence of a formal decision is not proof of safety
If no riskli yapı record is found, the only safe conclusion is that no such formal determination has been established in the buyer file. It does not prove that the building was assessed and passed. Conversely, if an official determination or notice exists, obtain the current report and understand objections, process stage and possible effects on use, finance, strengthening or demolition. Current Ministry guidance stresses that the address and building identity in a risky-building report must match other transaction documents.
9. Connect structural findings to soil and seismic hazard without mixing them
AFAD hazard data describes seismic demand at the location. Soil and foundation information describe site response. Structural inspection describes the building. They are three related but different evidence layers. Two nearby buildings can share similar hazard values while differing materially in soil, structural system, execution quality or later alterations. DASK is also an insurance record rather than a structural performance assessment.
10. Questions the buyer should ask the engineer
- Which exact building and block were inspected?
- What was the scope, and what could not be inspected?
- Were the original projects, soil report and alteration records available?
- Which defects were observed, what are the possible causes and what evidence would resolve them?
- Are there changes from the approved project that may affect the structural system?
- Is the conclusion a preliminary screening or a detailed performance assessment?
- Is any formal Law 6306 process already recorded?
- What event, repair, alteration or earthquake would make the report stale?
11. Red flags
Red flags include a report without engineer identity, date or precise address; a report for another block; missing pages or appendices; an “earthquake-safe” conclusion after a short visit with no stated method; a report that predates major structural alteration or a relevant earthquake; refusal of access to the ground floor, basement or documents; recent concrete repairs with no explanation; recurring cracks or settlement; and claims that a DASK policy or AFAD map replaces structural assessment.
12. Decision framework and records
Divide the outcome into confirmed information, inspection limitations, defects requiring follow-up and transaction conditions. If uncertainty can reasonably be resolved before purchase, make the additional report or test a condition before irreversible payment. Preserve the full report, appendices, photographs, drawings, laboratory results and the project version used, together with the engineer or organization details where relevant. Another reviewer should be able to see why the conclusion was accepted and exactly what remained outside its scope.
FAQ
Does a visual inspection prove earthquake resistance? No. It can identify indicators and the need for deeper work, but the defensible conclusion depends on scope and evidence.
Does every property purchase require concrete cores? No universal purchase rule says that. The engineer selects tests according to the building, records, observed condition and technical question.
Is a riskli yapı report the same as a buyer report? No. Formal risky-building determination follows Law 6306, prescribed principles and licensed bodies; a buyer inspection can be separate private technical due diligence.