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Building and Construction Authority

Green Mark Verification

Verification is the last step of the Green Mark Certification process. Its objective is for building developers or owners to demonstrate compliance with the committed design specifications in terms of implementation of green features, site installation, control strategies and energy savings over code-compliant buildings.

Last updated 29 January 2026
Green Mark Verification for BCA Green Mark Certification process

For Projects Using GM Criteria Before GM2021 

Verification in 2 Stages 

Please refer to the workflow [PDF, 687 KB], submit the relevant documents and calculate the necessary scores before on-site verification.   

Stages of verification

Stages

New & Existing 

Non-residential buildings

Residential buildings 

Stage 1 

You must determine the functionality and performance of the green features that resulted in the certification and demonstrate compliance with the committed design specification through documentary evidences and site verification. Verification officer(s) will inform the need for site verification if needed after reviewing submitted documents. 
 
Stage 1 verification is applicable for Green Mark certified Existing Building projects which were awarded with commitments.  

Stage 2 

This stage applies only to Green Mark GoldPLUS and Platinum non-residential projects with energy modelling. 

You must determine the energy savings for the building over its reference model using 12-month actual operation data and show compliance to the committed energy savings that resulted in the certification. 

N.A. 

Forms and documents 

  • Fulfilment of A/C system efficiency performance and heat balance requirements (such as OSE report [PDF, 1.1 MB] – required in stage 2 for projects not subjected to Periodic Energy Audit) 

  • Submission requirements (Refer to NRB)  

  • Declaration letter (Appendix A) (Refer to NRB)