Public Review Open for Proposed Changes to the 2025 National Model Codes
Jun 9, 2026 12:00 AM
This national public review runs from April 27 to June 22, 2026.
The Canadian Board for Harmonized Construction Codes (CBHCC) invites code users, the Codes community, and the public to participate in the spring 2026 public review of proposed changes to the 2025 editions of the National Model Codes. The proposed changes included in this public review address the following topics in the National Building Code of Canada, the National Energy Code of Canada for Buildings, and the National Plumbing Code of Canada:
National Building Code of Canada
- Accessibility
- Automatic sprinkler systems
- Energy efficiency for houses
- Fire protection
- Modular construction
- Plumbing materials and equipment
- National Energy Code of Canada for Buildings
- Airtightness
- Heating, ventilating and air-conditioning systems
- National Plumbing Code of Canada
- Drainage systems
See the summary of key proposed changes below for more details.
The purpose of this public review is to:
- provide code users, the Codes community, and the public with a detailed look at proposed technical changes, and
- seek comment on each proposed technical change as to whether it should be approved, altered or withdrawn.
The public review will close at 11:59 pm PT on June 22, 2026, after which comments will no longer be accepted.
The result of the public review process is a collection of comments on proposed code changes. The comments are sorted and analyzed by Codes Canada staff who are familiar with the development of the proposed changes, and who develop a draft resolution to each comment. The draft resolutions are validated by the responsible code development committees, which form the recommendations to the CBHCC.
The recommendations could be one of the following:
- approve for publication,
- revise for publication,
- defer publication pending further development – subject to subsequent public review, or
- withdraw proposed code change.
The CBHCC decides which changes will be published in the next edition of the National Model Codes based on the recommendations of the code development committees.