If you own property in Turkey or are considering a real estate investment, urban transformation is one of the most significant legal and financial processes you may encounter. At the heart of this process lie two concepts that directly determine the value of your property and your legal rights: zoning increase (imar artışı) and floor area ratio (emsal / KAKS — Kat Alanı Kat Sayısı).
Understanding these concepts is not merely a technical matter — it is a legal necessity. Without a clear grasp of how zoning rights work, you may sign a contractor agreement that does not protect your interests, lose the right to object to a risky building designation, or find yourself outvoted in a transformation decision with no legal recourse.
A zoning increase (imar artışı) is the additional construction right granted by Turkish municipalities to property owners within urban transformation projects. When an old or structurally risky building is demolished and rebuilt, the relevant municipality may — through a formal planning decision — permit a larger structure or more residential units to be built on that plot.
This right is not automatic. Whether a parcel qualifies for a zoning increase depends on the municipality's approved zoning plan, the size of the plot, the infrastructure capacity of the area, and whether the plot can be merged with adjacent parcels (a process called tevhit).
What does a zoning increase mean in practice?
If your building currently has 8 apartments and the area qualifies for a zoning increase, the rebuilt structure may contain 10 or 12 apartments. The contractor takes the "extra" units as their share and — in return — does not demand a cash payment from you. Without a zoning increase, contractors typically request an additional fee per unit or decline the project altogether. This is why zoning increases are the economic engine of urban transformation.
Advantages of a zoning increase for property owners:
Key risks to be aware of:
Emsal — technically known as KAKS (Kat Alanı Kat Sayısı) — is the ratio of a building's total floor area to the area of the plot on which it stands. This ratio, determined by the municipality for each parcel, defines the maximum amount of construction permitted on that plot.
Basic formula:
Total Construction Right = Plot Area × Floor Area Ratio (Emsal)
Example: If your plot is 1,000 m² and the floor area ratio is 1.5, a total of 1,500 m² of enclosed space may be built.
How is a floor area ratio increase obtained?
The most common method is parcel merging (tevhit). When adjacent plots are combined, the total area increases and the municipality may grant an additional construction right (zoning increase) in return. In practice, a minimum combined area of 800 m² is typically required. Upon merging, areas must be set aside for public uses such as roads, green spaces, and parking.
What is the difference between a floor area ratio increase and a floor count increase?
A floor area ratio increase raises the total buildable area. A floor count increase raises the number of storeys. However, the number of storeys is not determined by the floor area ratio alone — it is also subject to the municipality's maximum building height (H max). Even with a floor area ratio increase, the floor count may remain limited due to height restrictions. Both factors must be evaluated together.
Foreign nationals may generally own property in Turkey and participate in urban transformation processes. However, the process contains several legal details that require particular attention for those who are not resident in Turkey.
Official notification: The risky building designation decision must be officially served on all co-owners, including foreign nationals. If you do not have a registered address in Turkey, you may miss this notification — and with it, the 15-day statutory period to file an objection. Missing this deadline means permanently losing your right to contest the designation.
Power of attorney: If you are managing the process from abroad, you must appoint a qualified attorney through a properly executed power of attorney (vekaletname) that complies with Turkish law and carries an apostille. Without a valid power of attorney, you may be unable to act at critical stages including notification, signature, and objection proceedings.
Simple majority rule: Under current legislation, urban transformation decisions may now be taken by a simple majority of co-owners based on land share. This means that if the majority of owners in your building vote for transformation, you may be legally required to participate — even if you object. Knowing your rights before this happens is essential.
Contract language and content: Contractor agreements are drafted in Turkish and governed by Turkish law. If the zoning increase guarantee, delivery date, penalty clauses, and contractor insolvency scenarios are not explicitly addressed in the contract, serious legal consequences may follow. Signing without fully understanding the contract is a significant risk.
Land share (arsa payı): Your registered land share in the title deed directly determines the size of the unit you will receive in the new building. If the land share has been incorrectly or disproportionately recorded, you may not benefit from the zoning increase in proportion to your rightful ownership. In such cases, a land share correction lawsuit (arsa payı düzeltme davası) may be necessary.
Turkish properties in urban transformation zones carry significant value appreciation potential when properly assessed from a legal and technical standpoint. Before making an investment decision, the following must be carefully examined:
Urban transformation is a complex process with simultaneous technical, legal, and financial dimensions. For foreign nationals, the language barrier and unfamiliarity with local legislation add further complexity. Professional legal guidance is not optional — it is essential.
For a comprehensive legal analysis including floor area ratio calculation formulas, step-by-step numerical examples, current legislation, the relationship between zoning increases and contractor agreements, frequently asked questions, and a full legal process map, please visit our complete guide in Turkish. Zoning Increase & Floor Area Ratio in Urban Transformation — Full Legal Guide (Turkish)
For a zoning rights assessment, land share analysis, contractor agreement review, or full legal representation throughout your urban transformation process, please contact us. Remote legal services are available via power of attorney for clients in Ankara, Istanbul, and Antalya.
This page is for general informational purposes only and does not constitute legal advice. Av. Kübra Keleş — Urban Transformation Law
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