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Knowledge Base · YeS‑Int

YeS‑Int (YeS‑TR) requirements for public buildings of 10,000 m² or more

Understand the YeS-Int scope for Turkish public buildings, transitional provisions and responsibilities through design, procurement and operation.

YeS-Int Green Certification requires coordinated management of design decisions, completed work and supporting evidence for public buildings within its scope. An authority should first establish whether its project is covered, then translate the target and responsibilities into design and tender documents.

Which public buildings are covered?

Article 57/A(6) of Türkiye’s Planned Areas Zoning Regulation addresses publicly owned healthcare, education, dormitory and service buildings requiring a new building permit, with a total building construction area of 10,000 m² or more. The provision took effect on 1 January 2026. Its area test concerns total building construction area rather than net usable floor area. Official amendment, Articles 6 and 10.

CheckInformation to include in the initial file
Ownership and usePublic ownership and the relevant healthcare, education, dormitory or service use
AreaProject information establishing total building construction area
PermitWhether a new building permit is required and the application date
Procurement and contractsThe relevant works tender decision, tender date and contract records
Transitional provisionsAssessment under Provisional Article 3(7)

Area and use alone do not settle applicability. The amendment includes a transitional provision for earlier permit applications and specified procurement and contract circumstances. Assess the project against dated documents. Transitional provision, Article 8.

Plan the process through five stages

  1. Preparation and planning: Consider the brief, site conditions and intended certification level together. Plan early YESU involvement and define the service scope.
  2. Design and integrated design: Assign responsibilities across disciplines, identify studies and evidence, and incorporate target criteria into the design tender specification.
  3. Construction procurement: Align selected solutions, product requirements, testing and handover documents with the works tender.
  4. Construction: Track design changes and implementation evidence. Coordinate measurements, tests and the submission file with the construction programme.
  5. Operation: Assign responsibility for maintenance, use and performance records.

These stages follow the Ministry’s March 2026 guide. Early YESU involvement is recommended by that guide; this recommendation should be distinguished from statutory duties and application requirements. Implementation guide, printed p. 12.

Define deliverables in the YESU appointment

An appointment should describe more than “certification consultancy”. Identify responsibility for the target criteria list, design meetings, specification review, evidence tracking, submission coordination and responses to missing information. State who provides each analysis and when each document is due. These are headings for a project-specific service scope.

Examples to address in specifications

CriterionTopic to address in the technical documentsScope distinction
EKV 01 K1At least energy performance class B on the Energy Performance Certificate, calculated using BEP-TRA minimum condition; track the certificate and underlying design information together.
SAY 01 K3Water metering and consumption recordsIdentify meter locations and responsibility for records during design.
YMD 03 K1If the radon measurement pathway is selected, annual average concentration must not exceed 300 Bq/m³A criterion pursued for credit; do not describe it as universally mandatory.

The energy and radon examples were also checked against the official annexes dated 28 October 2026. The radon criterion includes an alternative assessment pathway, so specifications should identify evidence for the selected method. Current annexes: energy, PDF pp. 98–99; radon, pp. 86–87.

What should the initial meeting produce?

The initial decision file should bring together applicability, the target level, the YESU appointment and deliverables allocated across disciplines. Completing this file before procurement makes clear how design commitments will be evidenced during construction.

Our YeS-Int Green Certificate consultancy can help assess your project stage, area and available documents.

Sources

For your questions

Frequently asked questions

Does a building of exactly 10,000 m² meet the area threshold?

The provision specifies 10,000 m² or more. Public ownership, use, the new permit requirement and transitional provisions must also be assessed.

Does the same requirement apply to every public building?

This provision addresses public buildings meeting the stated use, area and new permit conditions. An existing building is not automatically assessed on the same basis.

What if the permit application or tender decision is earlier?

Review the dated documents against Provisional Article 3(7) of the Planned Areas Zoning Regulation. The construction start date alone should not determine applicability.

Should a YESU be appointed during preparation?

The Ministry’s guide recommends early involvement to coordinate targets, responsibilities and evidence with design and procurement. Define the appointment scope clearly in the contract.

Is radon measurement mandatory for every project?

YMD 03 K1 is a criterion pursued for credit. Where the measurement pathway is selected, its annual average limit and method conditions must be met; it is not universally mandatory.

How are the programme and consultancy fee determined?

Project stage, scope, analyses, evidence preparation and procurement scheduling are assessed. Deliverables, the programme and fee are set out in a proposal based on project information.