Required Documents for a Prefabricated House Permit: 2026 Checklis

Last updated May 09, 2026

Prepared by AYD Prefabrik Editorial Team Building permit document and file guide

Technical review AYD Prefabrik Technical Office Architectural and structural project filing practice

How was the data compiled?

This checklist is compiled with reference to Turkish Zoning Law No. 3194, the Planned Areas Zoning Regulation, the Building Inspection Law No. 4708 and the Turkish Building Earthquake Code (TBDY 2018).

Editorial note

The documents required for the permit file may vary depending on the local municipality's practice and the special provisions of the zoning plan. Before applying, an up-to-date document list should be obtained from the municipal zoning directorate.

Legal framework of the permit file: Law No. 3194 and the Planned Areas Regulation

A building permit for a prefabricated or light steel house is obtained under Articles 21 and 22 of Zoning Law No. 3194, by applying to the zoning directorate of the relevant municipality. It is not the type of structure but the zoning status of the parcel and the completeness of the file that determines whether the permit is granted.

The Planned Areas Zoning Regulation defines the minimum content of the projects and annexes required in the permit file. If this content is not met, the file is returned; therefore, comparing the documents against the regulation checklist before applying prevents the process from extending by weeks.

Law No. 3194 is the legal basis of the permit.
The Planned Areas Zoning Regulation defines project content.
In unplanned areas, the Unplanned Areas Regulation applies.
Building inspection scope is regulated under Law No. 4708.
TBDY 2018 earthquake calculation is mandatory for light steel and prefab.

Land documents: deed, survey map and zoning status document

The first three core documents of the permit file establish the legal identity of the parcel. The deed copy shows the owner and the type of parcel, the survey map (building application sketch) shows the boundaries and dimensions, and the zoning status document defines the limits of what can be built. Without these three, the technical project stage cannot start.

The zoning status document includes the parcel's ground area ratio (TAKS), floor area ratio (KAKS), maximum building height, setback distances and plan notes. Since the architectural project is drawn within these limits, the document must be current and approved; in most municipalities, a zoning status older than one year must be renewed.

Deed copy: owner and parcel type information.
Survey map (building application sketch): parcel boundaries and dimensions.
Zoning status document: TAKS, KAKS, height and setbacks.
Address (numbering) certificate: confirmation of block, parcel and address.
Existing topography map: current contoured measurement of the parcel.

Architectural, structural, electrical and mechanical projects: the core of the file

The technical core of the permit file consists of four projects. The architectural project includes plans, sections and elevations; the structural project covers load calculations and details of the bearing system; the electrical project defines lighting, sockets and the panel; the mechanical project defines plumbing, heating and ventilation. The four projects reference each other and are usually submitted in the same file.

For light steel and prefab structures, the structural project must be based on Turkish Building Earthquake Code (TBDY 2018) calculations and aligned with the system manufacturer's type projects. The architectural project must show prefab panel thicknesses, light steel profile types and sandwich panel class on the drawings; otherwise the project is returned at the technical office stage.

Architectural project: plan, section, elevation and system details.
Structural project: TBDY 2018 calculations and bearing system details.
Electrical project: panel, columns, lighting and socket lines.
Mechanical project: plumbing, heating, ventilation and natural gas.
All projects must be registered with the relevant chamber (TMMOB).

Soil survey report and building inspection contract

The soil survey report establishes the bearing capacity of the parcel, the soil class and how it will behave during an earthquake. Under the Building Earthquake Code, a geotechnical or geological-geotechnical survey report is mandatory for every new structure; without it, the structural project is not approved.

The building inspection contract is signed between the property owner and a building inspection firm under the Building Inspection Law No. 4708. A file without a contract is not accepted. The inspection firm reports every step from project approval to construction-stage controls; these reports are submitted to the municipality during the occupancy stage.

Geotechnical or geological-geotechnical soil survey report is mandatory.
The survey is prepared by licensed geological and civil engineers.
Building inspection contract is signed under Law No. 4708.
YIBF (Building Construction Information Form) is issued with the contract.
Inspection fee is set based on the building's area and class.

System documents for light steel and prefab: TSE, CE and system structural report

Unlike traditional reinforced concrete, light steel (cold-formed steel) and prefab panel structures contain factory-produced system components. The TSE certificate, CE conformity mark and system structural report of these components must be added to the permit file. The municipal technical office evaluates the structural project together with these documents.

For sandwich panels, the fire class (typically A2-s1, d0 or B-s1, d0) and thermal conductivity (U-value) certificates are submitted; for the building envelope, EPS/XPS/rockwool thickness and density certificates are added. For light steel profiles, galvanized coating (Z275 or above) certificate and bolt connection class (e.g. 8.8) documents prove that the system complies with the regulations.

TSE or TSEK certificate: conformity with Turkish standards.
CE conformity mark and Declaration of Performance (DoP).
System structural report: type calculation report from the manufacturer.
Sandwich panel fire class and U-value certificate.
Galvanized coating (Z275 and above) and profile tensile strength certificates.
Connection elements (8.8 class bolts) quality certificate.

Missing-document scenarios and practices that accelerate the file

In files submitted to the municipal zoning directorate, the most common deficiencies are an expired zoning status document, a soil survey report from the neighbouring parcel rather than the actual one, and a building inspection contract submitted without YIBF registration. These three errors alone can delay the file by 2-4 weeks.

For light steel and prefab structures, the most frequent reason for return is missing system structural reports and TSE/CE documents. Including the manufacturer's technical office in the file from the very beginning, and drawing the architectural and structural projects in line with the system documents, brings the permit duration down to an average of 30-45 days.

Zoning status document must not be older than one year.
Soil survey must be conducted directly on the application parcel.
YIBF registration must be obtained before the inspection contract.
System structural report must align with the architectural project.
TSE/CE certificates must be valid and current at the time of application.
Manufacturer's technical office should be involved before submission.

Frequently Asked Questions

Is a permit required for a prefab house, or is a notification to the municipality enough?

Under Zoning Law No. 3194, a prefab house is also a structure and is subject to a permit. Prefab houses installed only by notification or simple authorisation are legally considered unauthorised; they cannot be registered to the title deed and may be subject to demolition.

Is the structural project prepared differently for light steel houses?

Yes. Light steel (cold-formed steel) structures are designed with specific calculation methods under TBDY 2018. The manufacturer's system structural report and profile certificates are an integral part of the project.

Can a permit be obtained without TSE and CE certificates?

For structures with system components such as light steel and sandwich panels, the file does not pass the technical office without TSE or CE certificates. These prove the product's compliance with the construction materials regulations.

How long is the soil survey report valid?

In most municipalities, the report is required to be renewed if 5 years have passed since its preparation. If excavation, fill or boundary changes have occurred on the parcel, it must be renewed regardless of validity.

How much is the building inspection fee?

The fee is calculated based on the building's area, use class and region according to the rate published by the Ministry of Environment, Urbanisation and Climate Change. The amount becomes definitive when the inspection contract is signed.

What happens if the application is filed with missing documents?

The municipal zoning directorate returns the file with the deficiencies and a new application period starts. Even a single missing document can delay the file by 2-4 weeks; for this reason, all papers should be verified against a checklist before applying.