Individuals and legal entities that want to undertake construction work in Türkiye must obtain a contractor license appropriate to their activities. Officially known as the building contractor authorization certificate, it ensures that the contractor is registered in the system and can take on construction work of a size that matches its qualifications.
The scope of the license is determined by taking into account the applicant’s work experience, financial capacity, and professional and technical capabilities. Especially for work that can be carried out at different scales, such as prefabricated building projects, it is important to hold a license class suited to the job being undertaken.
What Is a Contractor License?
A contractor license is an authorization showing that the individuals or companies that will undertake construction work have been officially registered. Although it is commonly referred to as a “certificate,” the application actually results in a contractor authorization certificate number being assigned in the system and the applicant’s class being determined.
Construction work, including building and installation work, must be carried out by contractors holding an authorization certificate that meets the conditions set out in the legislation. The group of the certificate affects the scope and size of the work the contractor can take on.
How Do You Get a Contractor License?
The answer to the question “how do you get a contractor license?” may vary depending on the license group being applied for. The first step is to obtain the reference number required for the application and payment through the relevant system of the Ministry of Environment, Urbanization and Climate Change.
After paying the fees for the requested license group, the applicant prepares the required documents. These are submitted to the Provincial Directorate of Environment, Urbanization and Climate Change in the province where the application is made. The information provided is reviewed in terms of financial capacity, work experience, technical staff and professional activity.
Once the application is approved, an authorization certificate number is assigned and the contractor class is registered in the system. The application method and the required documents may differ depending on the group selected and on whether the applicant is an individual or a legal entity.
Documents Required for a Contractor License
The documents required for a contractor license vary depending on the class applied for, but generally include the following:
- Authorization certificate application form and petition
- ID or tax number details
- Chamber of commerce or chamber of tradesmen registration certificate
- Signature declaration or authorized signature circular
- Current trade registry documents
- Registered Electronic Mail (KEP) address
- A document showing active taxpayer status
- Documents proving work experience
- Documents regarding financial capacity
- Technical staff declarations
- Payment receipts for the application and group registration fees
- A power of attorney granting the appropriate authority, if the application is made by proxy
All documents must be up to date, complete and consistent with one another. For the definitive list of documents, check the latest announcements of the provincial directorate where you will apply.

What Are the Contractor License Classes?
Contractor license classes consist of groups A, B, B1, C, C1, D, D1, E, E1, F, F1, G, G1 and H. Group A represents the highest level of qualification, while in the other groups the volume of work that can be undertaken is limited step by step.
Group H can be considered the entry-level group for individuals or legal entities that are new to the sector and do not yet have sufficient work experience. Moving up to higher groups requires meeting conditions such as work experience, financial capacity and technical capability.
When determining the license class, the size, type and approximate cost of the prefabricated buildings to be constructed should be taken into account. Since the maximum volume of work each group can undertake may change in line with the current approximate unit construction costs, the license’s current qualification level should be checked before starting a project.
How to Look Up a Contractor License
A contractor license lookup can be carried out through the Ministry’s official system. Individuals can access existing authorization certificate information using their Turkish ID number, and companies using their tax number.
The lookup shows the authorization certificate number, license group and current status. Before choosing a company for a construction job, it is important to verify not only its company details but also its contractor authorization.
What Is a Temporary Contractor Authorization Certificate?
A temporary contractor authorization certificate can be issued to individuals or legal entities who want to construct a building on their own land under certain conditions. The scope and validity of this certificate are limited to a specific construction project.
Whatever the type of application, the project scope, building size and current legislation should be considered together. Meanwhile, the quick-to-install prefabricated construction site buildings needed on construction and field projects can be custom-made to suit their intended use and project conditions.