Co-Ownership Agreements for Friends and Unmarried Partners Buying Property in Türkiye

Buying property with a friend or an unmarried partner can offer a practical route into the Turkish real-estate market. It can also create a long-term legal and financial relationship between people whose contributions, priorities and future plans may change. A clear co-ownership structure should be considered before completion, not after a disagreement arises.

For international buyers, the position requires particular care. The title deed, purchase funding, bank finance, tax position, succession planning and private agreement should tell a consistent story. Where they do not, a later sale, separation, refinancing or dispute can become materially more difficult.

Start with the ownership structure

The title deed is central to identifying the registered owners and their recorded interests in the property. Co-buyers should consider whether the intended ownership shares accurately reflect their financial arrangement, rather than assuming that an equal relationship necessarily means equal ownership.

It is common for one buyer to contribute more to the deposit, purchase price, renovation budget or ongoing costs. Those differences should be addressed expressly. A registered ownership share may be one part of the arrangement, but it may not answer every question about reimbursement, return on capital or the allocation of future sale proceeds.

Before signing, the parties should align the principal documents and evidence, including:

• the agreed purchase-price contributions and source of funds;
• the ownership shares to be reflected in the title documentation;
• any private loans between the co-buyers;
• the intended treatment of furnishing, renovation and maintenance expenditure;
• the allocation of income if the property will be rented; and
• the parties’ respective responsibilities for taxes, insurance, service charges and other property costs.

A co-ownership agreement should plan for change

A carefully drafted co-ownership agreement can convert broad expectations into an operational framework. It should be tailored to the property, the parties’ funding arrangements and their intended use of the asset. An agreement that simply states that costs will be shared is rarely sufficient.

Exit and sale mechanisms

The most valuable provisions are often those dealing with an exit. One owner may wish to sell, relocate, require liquidity, enter a new relationship or cease contributing to the property. The agreement can address whether the other owner receives a right to acquire that interest first, how an asking price or market value will be determined, and how long a proposed transfer or sale process may take.

Where a buyout is contemplated, the parties should agree a valuation process that remains workable in a difficult market. This may include the appointment of an independent valuer, a method for resolving disagreement over valuation, and a timetable for financing and completion. The agreement should also state what happens if a buyout does not proceed, including whether the property must then be marketed for sale.

Contributions, equity and sale proceeds

Equal title shares do not always reflect equal economic contributions. Co-owners may wish to distinguish between ordinary occupation costs and capital contributions that should be repaid or recognised on sale. For example, the parties may agree how to treat a larger initial contribution, a payment made to reduce borrowing, or significant improvement works funded by only one owner.

The agreement should also address losses, not only gains. A sale below the purchase price can expose assumptions that were never discussed. A sound arrangement identifies how sale expenses, outstanding finance and any shortfall will be allocated before the parties are under pressure to complete a transaction.

A co-ownership agreement is not an expression of distrust; it is a practical record of how the parties intend to manage an asset when circumstances are no longer straightforward.

Shared mortgages: ownership and liability are different questions

Co-buyers should not assume that their internal agreement changes the lender’s rights. Where financing is obtained jointly, the loan documentation may create obligations that extend beyond each borrower’s intended share of the debt. The precise position depends on the finance documents and the lender’s terms.

A private agreement can still allocate responsibility between the co-owners. It can specify who will pay instalments, insurance, fees and default-related costs, and may provide for reimbursement if one party pays more than the agreed share. However, those provisions generally regulate the relationship between the co-owners; they should not be treated as a substitute for understanding the obligations assumed under the bank documentation.

Before completion, buyers should review the finance arrangements alongside the purchase structure. A buyer who expects to exit later should consider whether a transfer of ownership, release from borrowing or refinancing would require lender consent or a fresh credit assessment.

When co-ownership becomes a dispute

If the relationship breaks down and the parties cannot agree on a sale, buyout or management of the property, formal dispute resolution may become necessary. Depending on the ownership structure, governing law and facts, a co-owner may seek to bring the shared ownership arrangement to an end through legal proceedings. The availability, process and outcome of any partition or related claim require case-specific advice.

Litigation can be commercially unsatisfactory even where a party has a strong position. It may delay a sale, increase costs and limit the parties’ ability to control timing and value. This is why a clear contractual sale and buyout mechanism is usually preferable to leaving a future separation entirely to negotiation or court process.

Protecting the wider estate and personal position

Property co-ownership also raises issues that extend beyond the relationship between the buyers. Death, incapacity, divorce, creditor claims, family arrangements and cross-border succession considerations can affect the practical outcome. Unmarried partners should not assume that the protections associated with marriage will apply to their property arrangements in the same way.

Separate estate-planning measures may be appropriate, particularly where one owner wants their interest to pass to a particular person or where the buyers have children from different relationships. The appropriate approach depends on the owners’ personal circumstances, nationality, domicile, assets and the applicable legal framework.

Practical steps before signing

Before committing to a joint purchase, co-buyers should obtain advice on the proposed title structure and prepare a written agreement that addresses funding, use, management, borrowing, default, transfer and exit. They should also ensure that the agreement is compatible with the transaction documents and any finance arrangements.

For friends and unmarried partners, the strongest protection is early clarity. Addressing difficult scenarios while the relationship is cooperative gives both parties a better prospect of preserving value, avoiding avoidable conflict and making an orderly decision if their plans diverge.