Permitting Processes in Renovation Projects

Whether a renovation needs a permit depends on the nature of the work. Simple repairs and alterations that do not touch the structural system, the façade or the building's use, such as painting, plastering or replacing floor finishes, are generally exempt; work on load-bearing elements, changes to the façade or floor area, and changes of use require approval from the municipality. In condominium buildings, work affecting common areas also needs the consent of the unit owners, while in historic buildings and conservation areas the approval of the regional conservation council is required as well.

In this article we outline the general permitting framework for property owners, managers and investors planning to renovate an existing building in Turkey, and in Istanbul in particular, along with common mistakes and how to plan the process properly. The goal is to help you ask the right questions before work begins and avoid unexpected costs.

The legal framework: which rules apply?

The core legislation governing construction in Turkey is Zoning Law No. 3194 (İmar Kanunu). It requires buildings to be constructed under a permit and makes later alterations subject to specific rules. The practical details are set out in the Regulation on Zoning in Planned Areas (Planlı Alanlar İmar Yönetmeliği) and in each municipality's own zoning regulations and plan notes. As a result, the same work may be assessed with different document requirements in two different districts.

Other legislation that frequently comes into play in renovation projects includes:

• Condominium Law No. 634 (Kat Mülkiyeti Kanunu): Governs the relationship between common areas and independent units in apartment buildings and residential complexes, and sets out how unit owners take decisions.
• Law No. 4708 on Building Inspection: For work that requires a permit, particularly interventions affecting the structural system, it may require a licensed building inspection firm to be involved.
• Law No. 2863 on the Conservation of Cultural and Natural Property: Makes work on listed buildings and in conservation areas subject to the approval of conservation councils.

Because legislation and regulations change over time, treat the information here as a general roadmap and confirm the current position with the zoning department of the relevant municipality before starting your project.

Simple repairs and alterations that do not require a permit

Zoning legislation defines certain works that do not change the essential character of a building as "simple repairs and alterations" (basit tamir ve tadil) and exempts them from the permit requirement. Works generally considered to fall within this scope include:

• Interior painting, plastering and renewal of finishes
• Replacing floor coverings and kitchen and bathroom fittings
• Renewing door and window frames without changing their dimensions or the appearance of the façade
• Renewing electrical, plumbing and heating installations without damaging load-bearing elements
• Repairing the roof covering without changing the shape of the roof or its supporting structure

The common test is that the work does not touch the structural system and does not change the façade, floor area or use of the building. Even so, work that appears "simple" may in some cases have to be notified to the municipality or comply with restrictions in the plan notes. Changes to façade materials, colours and window frames in particular are subject to aesthetic rules or municipal approval in some areas.

Work that requires a renovation permit

Changes that affect the essential character of a building generally require a renovation project to be prepared and approval to be obtained from the municipality. The most common cases in practice are:

Work affecting the structural system

Any intervention in columns, beams, shear walls or slabs directly affects a building's seismic performance. Removing a wall to combine two rooms may look simple at first, but whether that wall is load-bearing can only be established through an engineering assessment. Such work brings in structural drawings, strengthening calculations where necessary, and the building inspection process. In a city with high earthquake risk such as Istanbul, skipping these steps can have serious consequences for both legal compliance and life safety.

Changes to façade, area and use

Enclosing a balcony, opening a new window in the façade, adding to an attic floor, merging or dividing independent units, and converting a home into commercial premises all amount to departures from the approved project. Such work requires an architectural amendment project and an assessment by the municipality of its compliance with zoning rules. For changes of use, the function assigned in the zoning plan is decisive; not every use is permitted in every area.

Condominium ownership: common areas and owners' consent

Renovating a flat or a unit within a residential complex may concern more than the owner of that unit. Under Condominium Law No. 634, elements such as the load-bearing parts of the main building, the roof, the façade, staircases and the shared parts of building services are common areas. Work affecting these areas requires the consent of the unit owners; the majority needed depends on the nature of the work and the building's management plan.

In practice, the following steps reduce the risk of disputes:

1. Review the building's management plan and any previous resolutions of the owners' assembly.
2. Identify in advance any work that affects common areas or the façade.
3. Obtain the necessary consent through a written, properly adopted resolution of the owners' assembly.
4. Agree with the building management on working hours, noise, debris removal and use of common areas.

Work carried out without consent can lead to disputes with neighbours and demands to restore the original condition, even where the municipality has granted approval.

Historic buildings and conservation areas: conservation council approval

Many Istanbul neighbourhoods contain listed buildings and conservation areas, and the Bosphorus shoreline is also subject to special regulations. Renovating a listed building, or a building on a plot within a conservation area, often requires the approval of the relevant Regional Council for the Conservation of Cultural Property, including for interior alterations. Measured survey drawings, restitution and restoration projects may be requested, and the materials and methods used are restricted by council decisions.

Conservation council procedures can take longer than standard municipal applications. If you are working on a historic building, it is therefore important to build your schedule around this stage and to include an architect experienced in this field on the project team.

A step-by-step roadmap for planning the permitting process

1. Survey the existing condition: Obtain the building's approved project from the municipal archive, compare it with the situation on site and prepare measured survey drawings if needed.
2. Define the scope: Separate the planned works into "simple repairs and alterations" and "changes requiring a permit".
3. Check legislation and plans: Review the zoning status and plan notes, and check whether the plot lies within a conservation or special area.
4. Collect consents: Where required, obtain the owners' assembly resolution and conservation council approval.
5. Commission the drawings: Have architectural, structural and building services drawings prepared by licensed architects and engineers.
6. Apply and supervise: Submit the application to the municipality and, where required, run the process together with a building inspection firm.
7. Completion: Once the work is finished, obtain the closing documents required for the type of change made.

Following this sequence helps minimise risks such as work being halted, fines or demolition orders once construction is under way. Unpermitted or non-compliant alterations can also cause problems when selling, financing or insuring the property.

How Yeşilyurt Grup can help

Yeşilyurt Grup has been active in real estate and construction in Istanbul since 1995. Through our renovation and architecture services, we support property owners in surveying existing conditions, classifying the scope of work under the applicable rules, preparing projects and carrying out the work. Where needed, real estate legal questions can also be assessed within the same team structure. To clarify together which permits your project requires, get in touch with us.

Conclusion

The key question that shapes the permitting process for a renovation is whether the work changes the essential character of the building. Work affecting the structural system, façade, floor area or use requires a permit, while condominium ownership and conservation status add further layers of approval. Because the rules can differ from district to district, the safest approach is to confirm the latest requirements with the relevant municipality for every project and to plan the process with an experienced team.