Property Due Diligence in Turkey: What Foreign Buyers Must Check Before Paying a Deposit

What property due diligence in Turkey really means

Legal transferability is only one test. A property may be legally transferable yet overpriced, badly altered, unsuitable for a family, expensive to maintain, difficult to rent or dependent on a narrow foreign-buyer resale market.

That is why the buyer-first sequence remains:

Goal first → district second → project or building third → unit last.

The legal review asks whether the seller can transfer the correct property and on what conditions. Commercial review asks whether the price is defensible. Technical review asks what is known—and still unknown—about the building. Location review tests daily-life fit. Income review tests the rental case after realistic costs. Exit review asks who may buy the property later and why.

Some checks can be started by the buyer: comparing listings, visiting at different times, checking routes and asking for documents. Other findings require an independent Turkish lawyer, valuation professional, engineer, architect, accountant or citizenship specialist. Due diligence is not one person “checking everything”; it is the right question going to the right verifier.

What common documents help prove—and what they do not

The table is intentionally narrow. A document should never be asked to prove more than it can.

Before paying a deposit: control the commitment

A deposit is often where a buyer’s leverage begins to shrink. Urgency may be created by a seller, developer or intermediary; the buyer’s task is to slow the decision down until the essential terms and verification route are clear.

Start with three questions:

1. Who is the seller? Confirm the registered owner or the legal authority of the person or company acting for that owner.
2. Who will receive the money? The receiving account and beneficiary should match the independently reviewed transaction structure.
3. What, exactly, makes the payment refundable? The answer must be in the written terms, not in a message or verbal assurance.

Deposit terms vary. Do not rely on the payment’s label. Have the written terms and receiving party independently reviewed before money moves.

The document should identify the buyer, seller, receiving party and exact property; the total price, deposit amount and currency; whether the deposit forms part of the price; who holds it; the due-diligence period; refund triggers and timing; permitted deductions; what happens if either party withdraws; any exclusivity or removal-from-market promise; the governing language and dispute mechanism; and the receipt or bank evidence that will be issued.

Useful refund conditions may address an unacceptable title restriction, seller-authority failure, permit or unit-identity problem, materially inconsistent documents, unsatisfactory professional review, or an inability to complete a stated citizenship structure. The correct conditions depend on the property and contract. They do not arise automatically because a document is called a reservation form.

Warning signs include pressure to pay before documents are supplied, payment to an unrelated person, inconsistent unit references, resistance to independent advice, a promise that every deposit is refundable, or a demand to use only the seller’s chosen professionals.

Check each stage at the right time

For off-plan or prepaid housing, the risk pattern is different. The Ministry of Trade’s March 2026 consumer guidance states, among other protections, that required pre-contract information must be supplied before the contract, a prepaid housing contract cannot be concluded before a building permit is obtained, and the agreement must follow the prescribed formal route. A buyer should have the exact structure reviewed rather than treating a sales-office form as sufficient protection.

Verify the Tapu, owner and exact independent section

In Turkey, property ownership transfers through registration at the Land Registry Directorate. A preliminary agreement or private written promise does not itself transfer ownership. The official Invest in Türkiye property guide also advises checking mortgages, liens and similar restrictions before starting the transfer process.

The printed Tapu is a starting document, not a live guarantee. Reconcile it with the current registry record and the physical property. Confirm the province, district and neighbourhood; block and parcel; building and independent-section number; property description; registered owner; land share; and condominium status. Check that the apartment visited, plan supplied, contract description and title identity all refer to the same unit.

This sounds elementary, but marketing labels can differ from legal identifiers. A sales team may describe “Apartment B-12” while the registry and approved plan use a different independent-section number. A buyer should not assume that a door number, brochure label or utility account establishes the title identity.

Public TKGM parcel-query information can help orient a buyer using parcel details. It does not provide unrestricted access to private ownership and full encumbrance information. Owner-controlled WebTapu access and a formal registry review serve different purposes. The seller can facilitate appropriate access or documents; the buyer’s lawyer should determine what current official evidence is required.

Check mortgages, attachments, annotations and other restrictions

The Turkish term takyidat broadly refers to recorded restrictions, burdens or rights affecting a title. TKGM provides an official title-record and takyidat service route, but the legal effect of any entry remains property-specific. Depending on the property, the current registry may show mortgages, attachments, annotations, easements, usufruct rights or other entries.

A statement that a restriction “will be removed at closing” is not the same as a completed removal. The lawyer should confirm the nature of each entry, whether it prevents or complicates transfer, what consent or payment is needed, and the exact sequencing that protects the buyer. If a mortgage is to be discharged from sale proceeds, the release, payment and transfer steps must be coordinated rather than assumed.

Recheck the registry immediately before transfer because title information can change between the first review and closing. A clean-looking old printout is not a current restriction report, and title transfer does not automatically clear every burden.

Check permits, occupancy and condominium status

Three concepts are often compressed into “the paperwork is complete”: the building permit, the building-use permit and condominium status. They answer different questions.

A building permit relates to permission to construct the approved project. An iskân is an important legal-use and completion document. It is not a substitute for a structural assessment of the building. Kat irtifakı is construction servitude used while independent sections are tied to a project under construction; kat mülkiyeti is condominium ownership for an independent section in a completed building. TKGM’s condominium guidance provides the formal framework.

Kat mülkiyeti is generally a more complete title position for a finished apartment, but it does not prove structural safety, fair value or the absence of later unauthorized work. Compare the approved plans and recorded use with the unit as built. Enclosed balconies, moved walls, merged rooms, roof additions or converted commercial/residential uses may require specific review. The effect of any discrepancy should be confirmed by an architect and lawyer with the relevant authority; it should not be guessed from appearance.

Checks change with the property type

The table is not a substitute for property-specific advice. It shows why a single checklist cannot be applied mechanically to every asset.

Verify the developer and intermediary—but do not confuse identity with quality

For a company seller or developer, confirm the legal entity, current signatory authority and relationship to the land, project and receiving bank account. Official systems such as MERSİS and the Turkish Trade Registry Gazette can support identity and registry checks. They do not prove financial strength, build quality or future delivery.

Review the company’s completed projects, delivery record, unresolved disputes available to advisers, management arrangements, specification changes and the people legally authorized to sign. Ask who owns the project land, whether finance or mortgages affect it, which entity owes the buyer delivery, and what protection exists if milestones are missed.

For an intermediary, verify the licensed business and the authority to market the property. The Ministry of Trade’s EİDS framework supports identity and listing-authority verification in electronic property advertising. That is useful, but it is not an endorsement of the price, building or investment.

Test the price: official value is not the same as fair value

Cheap is a low number. Value is a defensible relationship between price, condition, location, income potential and exit demand.

Three ideas must remain separate:

Official or regulatory valuation ≠ fair market value ≠ good investment.

A regulated report answers questions within its defined scope and effective date. A commercial price test asks what informed buyers would pay for this specific unit relative to credible alternatives. That requires comparables adjusted for micro-location, building, floor, light, orientation, view, layout, usable area, condition, furnishing, renovation, parking, storage, aidat, competing inventory, achievable rent and likely resale demand.

Do not compare only asking prices across a district. Start in the same building or project, then closely comparable nearby buildings. Separate seller aspirations from achieved evidence where reliable completed-sale evidence is available to the professional. Public achieved-sale data is not universally available, so the strength and limitations of the comparison should be explicit.

The TCMB Residential Property Price Index helps frame broad national and regional trends. It is not a valuation of an Istanbul district, building or apartment. A rising index cannot make an overpriced unit good value.

Ask the seller or adviser to defend the premium in unit-level terms. If the price depends mainly on a citizenship narrative, guaranteed-rent headline or future infrastructure slogan, place it in REVIEW until ordinary market evidence supports it.

Citizenship eligibility and property quality are separate decisions

As of 27 August 2026, the property route requires qualifying real estate worth at least USD 400,000 or equivalent foreign currency, with a title restriction preventing resale for at least three years, subject to the wider official process. The current threshold and holding condition are stated by Invest in Türkiye.

Three documents are commonly misunderstood:

• DAB — Foreign Currency Purchase Certificate: bank-issued evidence connected with the required foreign-currency conversion/payment process for a foreign natural person’s property acquisition. TKGM’s foreign-exchange guidance should be checked for the current transaction procedure.
• TTB — amount-determination document: a TKGM process document showing the property investment amount acceptable for the property-based citizenship evidence process under the current TKGM citizenship circular. It is not a fair-price certificate.
• TYTB — property-investment determination document: a later determination within the land-registry citizenship process described in the TKGM implementation guide. It does not itself guarantee final citizenship approval.

An ordinary purchase is not subject to an official valuation merely because the buyer is foreign under the current TKGM framework; a citizenship transaction uses the specific TTB process, and other transaction-specific requirements can apply. Have the current rule and property structure confirmed before relying on that distinction.

A property can qualify for the citizenship process and still be overpriced, poorly built, difficult to rent or hard to resell. For the complete application context, see the Istanbul Property for Turkish Citizenship guide.

Considering an Istanbul purchase for citizenship? Use the Istanbul Citizenship Property Readiness Checklist to organise your objective, budget, timeline and documents before evaluating projects.

Assess the building, not only the earthquake map

Earthquake hazard ≠ building-specific risk.

AFAD explains that its Türkiye Earthquake Hazard Map presents hazard, not a risk map for individual buildings. District-level colour or reputation cannot establish the condition of a particular structure. Soil context, design, construction, materials, alterations, deterioration and maintenance all matter, and their significance requires professional assessment.

Begin with the building’s age and records, visible condition, known repairs, ground-floor alterations, removed walls or columns, water ingress, corrosion signs, additions, major renovations and management history. These are screening questions, not an engineering conclusion. Building age may change the questions worth asking; it does not by itself prove safety or danger.

İBB’s building-identification information can help an Istanbul owner understand the municipality’s relevant screening service and its limits. A buyer considering a specific building should ask a qualified structural engineer what scope is appropriate and what documents, access or tests are required. If an urban-transformation or riskli yapı issue exists, the legal, technical, occupancy and timing consequences need separate professional review.

DASK is earthquake insurance, not a building-safety certificate. The DASK legal framework concerns compulsory earthquake cover; it does not certify construction quality, regulatory compliance or earthquake performance. Likewise, neither kat mülkiyeti nor an iskân replaces an engineering assessment.

Control the contract and payment sequence

The contract should accurately identify the parties and property, price and currency, payment milestones, included fixtures, delivery or transfer conditions, default consequences, refund rights, taxes and fees, governing language and dispute process. For a new build, attach the plans, materials specification, completion standard and handover procedure rather than relying on marketing images.

Independent review matters because translated sales language can hide a different legal effect in the controlling text. Confirm who signs, under what authority, which language prevails and what happens if the property or seller fails a stated condition.

Payment should follow independently verified milestones and an agreed closing sequence. Preserve bank evidence and make sure required currency-conversion documentation is arranged correctly. Do not send funds to a personal or unrelated account because it is described as faster.

The Secure Payment System is time-sensitive. On 26 June 2026, the Ministry of Trade announced that mandatory implementation had been postponed to 1 October 2026. As of this article’s 27 August 2026 verification date, that future mandatory date had not yet arrived. Buyers completing later should recheck the official position and have their bank, lawyer and land-registry process aligned. TKGM also describes its Güvenilir Hesap service for synchronized payment and title-transfer arrangements.

Test the rental case with net, not headline, economics

A rental forecast should begin with a realistic tenant profile: who would rent this unit, why this building, at what monthly amount and for how long? Compare genuinely similar units by building quality, size, furnishing, floor, condition and access—not just district averages.

Then test vacancy, leasing costs, aidat, management, maintenance, furnishing replacement, insurance and tax where relevant. A headline gross yield based on an advertised rent can be materially different from net cash flow. Ask how long comparable listings remain available and whether the proposed rent is achieved evidence, a current asking price or a developer projection.

Short-term rental is a separate legal and operational case. Under the official tourism-rental regulation, renting a residence for 100 days or less per stay falls within the permit regime. In ordinary multi-unit residential buildings, a notarized unanimous decision from the residential unit owners is generally part of the permit application, subject to the regulation’s categories and exceptions. Building rules, permit eligibility and operating responsibilities must be checked for the specific property. Airbnb listings do not prove permission.

If the investment case works only with optimistic occupancy, a rent guarantee from an untested counterparty or an unverified short-term-rental assumption, the INCOME gate remains in REVIEW.

Test resale liquidity before buying

A property can be easy to buy and difficult to sell.

Define the future buyer pool. Would local owner-occupiers consider it, or mainly foreign investors? Is the layout conventional? Are aidat charges acceptable relative to local alternatives? Will the developer still be selling discounted new inventory when the buyer wants to exit? Does the unit face competition from many identical apartments?

Citizenship-marketed properties deserve a second price test. A premium paid for application convenience may not be recognized by a later local buyer. An unusual unit, high service charge, weak title position, difficult access or oversupplied project can narrow demand even in a well-known district.

Use a realistic holding period and include transaction costs. The Cost of Buying Property in Turkey guide explains the wider cost categories; this article’s question is whether enough future demand is likely to remain after those frictions. Do not treat expected appreciation as the exit plan. Identify who may buy, what alternatives they will have and why this unit should remain competitive.

Confirm that the property fits the buyer

Due diligence includes suitability. A legally clean apartment can still be the wrong purchase.

Return to goal → district → building → unit. Test actual journeys to work, school, healthcare, airports and family routines at relevant times. Visit during the day and evening. Listen for roads, aircraft, nightlife, construction and building systems. Ask about future projects, empty neighbouring plots, planned transport and the daily walk—not merely the straight-line distance on a map.

The Best Areas to Buy Property in Istanbul guide helps narrow districts by buyer goal. Families can use the Best Areas in Istanbul for Families guide to frame school, space and daily-life questions. Buyers comparing cross-city patterns should read European vs Asian Side of Istanbul. Those location frameworks narrow the search; they do not replace a building and unit review.

Who should verify what?

Independence matters. Ask who appoints and pays the professional, what they were instructed to verify, what records they saw, what limitations apply and whether they have a financial interest in completion.

For the wider purchase sequence and foreign-buyer eligibility context, use Buying Property in Turkey as a Foreigner.

The TPB Pass / Review / Reject framework

This is an editorial decision tool, not a professional certificate.

A property reaches PASS only when all six gates are acceptable for this buyer. If any material category is unresolved, the result is REVIEW. If a material issue is unacceptable or cannot be resolved, the result is REJECT—even when the other five gates look attractive.

Due diligence is not complete until title, price, building, location, income and exit all make sense.

Final pre-deposit checklist

Use this compact list before money moves:

• Define the purchase goal, budget, holding period and non-negotiables.
• Identify the registered owner and verify the seller/signatory’s authority.
• Match the physical unit, contract, title identifiers and approved plan.
• Obtain a current professional review of mortgages, attachments, annotations, easements, usufruct and other restrictions.
• Check building permit, iskân, kat irtifakı/kat mülkiyeti and any alterations.
• Select the property-type checks: resale, completed new build, off-plan, land or villa.
• Test the price against adjusted unit-level comparables.
• Review building condition and commission the appropriate engineer/architect scope.
• Test commute, schools, healthcare, noise, future construction and daily life.
• Model realistic rent, vacancy, aidat, management, maintenance and permissions.
• Identify the likely future buyer pool and competing inventory.
• Put the exact deposit, refund and due-diligence conditions in writing.
• Verify the receiving party, bank account, currency and payment evidence.
• Confirm the current DAB, valuation, TTB/TYTB or other process only if relevant.
• Recheck the registry and closing sequence immediately before transfer.
• Mark every gate PASS, REVIEW or REJECT—and do not convert unresolved issues into assumptions.

Frequently asked questions

1. What should I check before buying property in Turkey?

Check the registered owner and exact independent section; current mortgages, attachments, annotations and other restrictions; permits, iskân and condominium status; unit-plan consistency; fair value; building condition; written contract and deposit terms; payment route; rental economics; location fit; and future resale demand. Foreign-buyer eligibility and the overall purchase sequence are covered separately in TPB’s foreign-buyer guide.

2. Should I pay a deposit before the legal checks are complete?

Avoid an unconditional payment before the essential documents, receiving party and written terms have been independently reviewed. If a deposit is commercially necessary, the agreement should define the due-diligence period, refund triggers, timing, deductions and consequences of seller or buyer withdrawal. Refundability is not automatic.

3. How can I verify a Turkish Tapu and its current restrictions?

Use the Tapu to identify the property, then have an independent Turkish lawyer verify the current official registry position and reconcile it with the seller, contract, approved plan and physical unit. Public parcel lookup is useful for basic parcel information, but it does not provide unrestricted private owner and encumbrance data. Recheck immediately before title transfer.

4. What is the difference between kat irtifakı and kat mülkiyeti?

Kat irtifakı is construction servitude linking planned independent sections to a project while construction is in progress. Kat mülkiyeti is condominium ownership for an independent section in a completed building. The second is generally the more complete status for a finished apartment, but neither proves structural safety, fair value or the absence of unauthorized alterations.

5. Does an iskân prove that a building is structurally safe?

No. An iskân is an important legal-use and completion document. It is not a substitute for a structural assessment of the building. A qualified engineer should define the building-specific review needed; DASK, building age and condominium status do not replace that work.

6. Do foreign buyers need an official property valuation in Turkey?

Not universally merely because the buyer is foreign under the current TKGM framework. Citizenship-related purchases use the TTB amount-determination process, and other transaction-specific rules can apply. Confirm the current requirement for the exact transaction. In every case, an official or regulatory value should not be confused with fair market value or investment quality.

7. Can a property qualify for Turkish citizenship and still be overpriced?

Yes. Citizenship documentation tests the defined eligibility and evidence process. It does not prove that the asking price is fair, the building is sound, rent is achievable or resale demand is deep. Citizenship eligibility and property quality are separate decisions.

8. How should I check earthquake risk for a specific building?

Use AFAD material for regional hazard context, then investigate the specific building’s records, age, alterations, condition and management history. Ask a qualified structural engineer to define an appropriate assessment. Do not infer individual-building safety from a district label, hazard map, DASK policy, iskân or building age alone.

9. Do I legally need a lawyer to buy property in Turkey?

This article does not claim that appointing a lawyer is a universal statutory condition of purchase. Independent Turkish legal review is nevertheless strongly advisable for a foreign buyer, particularly where seller authority, current title restrictions, contract language, payment sequencing or citizenship evidence must be verified.

Sources and methodology

Turkey Property Buzz distinguishes between four evidence types:

• Official fact: a current rule, procedure or definition supported by an official Turkish source.
• Observable market evidence: property-specific listings, comparable units, rent evidence, management records and other market observations, with their limitations stated.
• TPB editorial judgment: a buyer-first interpretation, such as treating a foreign-buyer-only resale case with extra caution.
• Requires professional verification: a title, contract, tax, technical or immigration conclusion that depends on the property and a defined professional scope.

This guide prioritizes current material from TKGM, Your Key Türkiye, Invest in Türkiye, the Ministry of Trade, MERSİS, the Turkish Trade Registry Gazette, AFAD, İBB, DASK, the Resmî Gazete and TCMB. Official sources explain rules and systems; they do not replace property-specific legal, valuation, architectural or engineering work.

Disclaimer

This article is educational and reflects sources checked through 27 August 2026. Property facts, official procedures and implementation dates can change. Property-specific issues require independent professional verification. Turkey Property Buzz does not provide legal, tax, structural-engineering, immigration or investment advice, and no property, return, title-transfer or citizenship outcome is guaranteed.

Considering an Istanbul purchase for citizenship? Use the Istanbul Citizenship Property Readiness Checklist to organise your objective, budget, timeline and documents before evaluating projects.