Kat Mülkiyeti vs. Kat İrtifakı in Turkey: What Foreign Property Buyers Need to Know

Buying property in Turkey involves more than choosing the right location, comparing prices, or evaluating a building's facilities. One of the most important steps is understanding the legal status of the property recorded on its Turkish title deed, known as a Tapu.

Two terms frequently encountered during the purchase process are kat mülkiyeti and kat irtifakı. Although both relate to ownership of independent units within a building or development, they represent different legal arrangements.

Understanding the distinction can help foreign buyers ask the right questions, assess documentation more carefully, and make informed decisions before committing to a property investment.

In this guide, we explain what each term means, how they differ, which documents to review, and what to consider before buying an apartment or investment property in Turkey.

What Is Kat Mülkiyeti in Turkey?

Kat mülkiyeti is the Turkish legal concept of condominium ownership. It establishes ownership of an individual, legally registered unit within a completed building, together with the associated share in the land and common areas.

Depending on the property, the independent unit may be an apartment, shop, office, or another qualifying section.

Kat mülkiyeti is generally associated with a completed building for which the required legal and administrative conditions have been fulfilled, including the applicable occupancy permit (Yapı Kullanma İzin Belgesi).

For a property buyer, this title status can provide an important indication that the individual unit has been registered under the condominium ownership framework.

However, it should not be treated as an automatic guarantee that the property is free from construction defects, outstanding debts, planning irregularities, or other legal issues.

Buyers should still review the property's documentation and actual condition before completing a purchase.

What Is Kat İrtifakı in Turkey?

Kat irtifakı is a form of property right established in connection with a planned or not-yet-fully-completed building. It identifies the intended independent units and their corresponding land shares within the approved development framework.

It can be established before construction is completed, which makes it particularly relevant when purchasing property in a new development or an off-plan project.

A property with kat irtifakı is not necessarily problematic. The important question is whether the property's current status, construction, permits, and documentation are consistent with the applicable requirements.

For an existing building, buyers should investigate why the title remains under kat irtifakı and whether the relevant occupancy permit and other conditions for conversion to kat mülkiyeti have been fulfilled.

The answer should be verified through the relevant authorities and property records rather than assumed from the title terminology alone.

Kat Mülkiyeti vs. Kat İrtifakı: Key Differences

The main difference is the legal status of the independent unit and its relationship to the building's completion and registration process.

The table provides a general comparison, not a legal assessment of an individual property. The precise implications depend on the official records and circumstances of the specific unit.

Is Kat Mülkiyeti Better Than Kat İrtifakı?

For many buyers purchasing a completed residential property, kat mülkiyeti can offer greater clarity about the unit's registered condominium ownership status.

Nevertheless, title status should be one part of the due diligence process, not the only factor determining whether a property is a good investment.

For example, a newly constructed development may still be progressing through the relevant registration procedures. Conversely, an older building with kat irtifakı may require closer examination of its permits, approved plans, and reasons for not having transitioned to condominium ownership.

Before deciding, buyers should consider:

• Whether the registered unit matches the property being marketed.

• Whether the building and unit comply with the approved architectural project.

• Whether the applicable occupancy permit has been issued.

• Whether mortgages, liens, restrictions, or other encumbrances appear in the official records.

• Whether the building's physical condition and maintenance history meet the buyer's expectations.

For a broader overview of the purchasing process, read Bigist Invest's Buying Property in Turkey: Property Buyers' Guide.

What Documents Should You Check Before Buying Property in Turkey?

Before signing a purchase agreement or transferring funds, buyers should arrange a review of the property's legal and technical documentation.

1. Turkish Title Deed (Tapu)

Confirm the property's registered owner, independent unit details, land share, and ownership status. Check for relevant mortgages, liens, restrictions, or other recorded rights.

The title deed should correspond to the exact property being purchased, not simply the development or building in general.

2. Occupancy Permit (İskan)

The Yapı Kullanma İzin Belgesi, commonly called an iskan, is an important document relating to the authorised use of a completed building.

Where kat irtifakı remains in place, ask whether an occupancy permit exists, whether it covers the relevant building, and whether any requirements remain outstanding.

Read our guide to What Is an Iskan in Turkey? for further information.

3. Approved Architectural Project

The registered unit's layout, location, intended use, and other relevant details should be compared with the approved architectural plans.

Unauthorised changes or discrepancies may require further investigation. A visual inspection alone cannot establish whether a modification has been legally approved.

4. Building Permits and Construction Status

For new or under-construction developments, verify the applicable building permit and determine whether construction corresponds to the authorised project.

For completed buildings, check whether the required completion and occupancy procedures have been fulfilled.

5. Official Property Registry Records

Request an appropriate review of the current land registry records and relevant annotations. Depending on the circumstances, additional checks may be necessary with the municipality or other competent authorities.

For a more comprehensive checklist, see Property Due Diligence in Turkey: Essential Checks Before Buying.

Can Foreigners Buy Property With Kat İrtifakı in Turkey?

Foreign buyers may encounter properties registered under either kat mülkiyeti or kat irtifakı. The title category alone does not determine whether a particular purchase is legally permissible or suitable.

Eligibility can depend on the buyer's nationality, the property's location, applicable ownership restrictions, the property's registration, and other legal requirements.

Before purchasing, foreign buyers should confirm that the transaction is permitted and that the relevant title and property documents are satisfactory.

Buyers considering property as part of a wider investment strategy should also review the applicable rules for their intended purpose rather than assuming that a particular title status automatically qualifies a property for residence or citizenship-related applications.

Does Kat İrtifakı Affect Property Value or Resale Potential?

The impact depends on the individual property and the reason for its current registration status.

Some buyers may prefer a completed unit with kat mülkiyeti because its condominium ownership status is already established. A property remaining under kat irtifakı may prompt additional questions about completion, occupancy approval, or outstanding administrative procedures.

These questions can affect buyer confidence and the time needed to complete due diligence. However, there is no universal rule that every property with kat irtifakı is worth less or is harder to sell.

When assessing investment potential, consider the following factors together:

• Location and access to transport and amenities.

• Purchase price compared with comparable properties.

• Construction quality and building condition.

• Rental demand and realistic income expectations.

• Legal status, permits, and any unresolved documentation issues.

• Potential costs or delays associated with outstanding procedures.

A sound investment decision requires evaluating both the property's market potential and its legal and technical condition.

Common Mistakes Foreign Property Buyers Should Avoid

Assuming Kat İrtifakı Means the Property Is Illegal

Kat irtifakı is a recognised legal arrangement. Its presence alone does not establish that a property is illegal or unsafe. Buyers should investigate the actual circumstances and documentation.

Assuming Kat Mülkiyeti Guarantees a Perfect Property

Condominium ownership does not eliminate the need to inspect construction quality, verify the property's physical condition, or review relevant registry records.

Relying Only on the Developer's Statements

Marketing materials and verbal assurances are not substitutes for official documents. Verify important claims independently before making a financial commitment.

Ignoring Differences Between the Registered Unit and the Actual Property

Compare the property with its approved plans and official records. If the layout, intended use, or other material details do not match, obtain professional advice before proceeding.

Signing Before Completing Due Diligence

Avoid committing to a transaction without understanding the title status, outstanding requirements, payment conditions, and potential consequences if the purchase cannot be completed as expected.

Final Checklist Before Buying a Property in Turkey

Before proceeding with a purchase, confirm that you have:

• Reviewed the current title deed and ownership records.

• Confirmed the legal status of the specific independent unit.

• Checked the occupancy permit where applicable.

• Compared the property with the approved architectural plans.

• Investigated relevant mortgages, liens, restrictions, and annotations.

• Assessed the building's physical condition and maintenance needs.

• Obtained independent legal advice on any unresolved issues.

• Understood the contractual terms, costs, and conditions for completing the purchase.

These checks are particularly important when buying a property remotely or purchasing a unit in a newly developed project.

Conclusion: Understand the Title Before You Invest

Kat mülkiyeti and kat irtifakı are important distinctions in Turkish real estate, but neither term should be considered in isolation.

Kat mülkiyeti generally indicates established condominium ownership in a completed building, while kat irtifakı is associated with the legal framework for planned independent units and construction-related arrangements. The property's actual legal status must always be confirmed through its official records.

For foreign buyers, the safest approach is to verify the title deed, relevant permits, approved plans, and any outstanding legal or administrative requirements before completing the transaction.

At Bigist Invest, informed property decisions begin with understanding the property itself, its documentation, and its investment potential. Explore our property buyers' guide and Istanbul property opportunities to continue researching the Turkish real estate market.

Disclaimer: This article is for general informational purposes and does not constitute legal advice. Property requirements and procedures may vary according to the specific circumstances. Consult a qualified Turkish real estate lawyer and verify the relevant records with the competent authorities before purchasing.