National energy code of Canada for buildings: 2025

Publication Year

2025

Document Status

Current

Abstract

Developed by the Canadian Commission on Building and Fire Codes with the support of Natural Resources Canada, and published by the National Research Council of Canada, the NECB sets out technical requirements for the energy-efficient design and construction of new buildings and additions.

Document History

Sixth edition, 2025. Supersedes the fifth edition, 2020.

Publisher Information