Passivhaus Affiliate


Over twenty years of experience demonstrates that the high levels of comfort and energy savings associated with the Passivhaus Standard is achieved through independent quality testing. All certified Passivhaus buildings undergo a rigorous compliance process. Certification is also available for specific components, Designers/ Consultants & Tradespeople:

Certified Passivhaus Buildings

Buildings: All proposed Passivhaus designs must undergo energy modelling conducted via the Passivhaus Planning Package (PHPP.) Tests ensure these targets are met, completing the quality assurance process. A certificate is only issued if the exactly defined criteria have been met without exception. Learn more about the different classes & certification process for Passivhaus buildings.

Passivhaus Designer logo

DesignersCertification for designers/ consultants who have the expertise to deliver Passivhaus buildings. The qualification covers training on PHPP, a design tool used to inform the design process and to assess or verify compliance with the Passivhaus Standard. If you can't find a UK consultant via our members map - check a list of international certified designers here.

Certified Tradesperson logo

Tradespeople: Contractors have developed their basic building knowledge & understand key Passivhaus principles such as airtightness. If you can't find a UK contractor via our members map - check a list of international certified tradespeople here.

Certified Component logo

Components: Certified products have undergone independent uniform testing. This allows useful quick comparisons and eases the task for designers to confidently specify high-quality, energy-efficient products. Check the database of certified Passivhaus components.


Building Certifiers

Passivhaus certifiers have been internationally accredited by the Passivhaus Institute (PHI)  to assess and issue the Passivhaus building certificates (Classic, Plus & Premium) and the EnerPHit building certificate for retrofit projects anywhere in the world. Details of PHT members & partners who provide building certification in the UK can be found below:

Based in the UK

International certifiers


How to become a Passivhaus certifier


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