About Us

CIBSE Certification Limited, a wholly owned subsidiary of the Chartered Institution of Building Services Engineers (CIBSE) and a NABERS UK Administrator is active in the built environment, certifying Management Systems, Competent Persons, and Building Performance Ratings (NABERS). It also offers verification of manufacturers' Embodied Carbon services based on CIBSE TM65 methodology. 

Our customers range from property companies, manufacturers, engineering consultancies, energy consultancies to SMEs, and sole traders. Revenue generated by CIBSE Certification is reinvested in our range of services or gifted to CIBSE to support its charitable mission. 

Why choose CIBSE Certification?

Our expertise in competent personnel, management systems, embodied carbon claims, and building performance ratings across the built environment is based on solid sector experience and knowledge. 

We offer technical and software support, promotion of our assessors, consultants, management system specialists, competitive rates for lodgements, international recognition, and quality assurance for members of our personnel schemes.

Our registers of competent experts, and register of certified building performance ratings are ideal for those looking to promote their expertise and building performance within the built environment.

Our Certification Services

Management Systems
We offer ISO 9001, ISO 14001, ISO 45001 and ISO 50001 management certification, see More about Management Systems service

We offer competent personnel schemes for Low Carbon Consultants, Low Carbon Energy Assessors, ESOS Lead Assessors, Heat Networks Consultants, Management System Specialists and NABERS Assessors, see more about our Personnel Schemes.


As NABERS UK administrator we offer Design for Performance, Energy for Office Certified Performance Ratings and Training services, see more about the NABERS scheme.

Embodied Carbon Verification  
We offer an Embodied Carbon Verification (ECV) scheme based on the methodology published by CIBSE in TM65 providing verified assurance of manufacturers' embodied carbon claims.

This service is evolving in response to demands for independent and credible verification of embodied carbon claims. Interested parties use these verified claims to make decisions on product specifications in the built environment, see more about our Embodied Verification Scheme.