Coming soon! Second public review of proposed changes to the 2020 National Model Codes

- Ottawa, Ontario

The Canadian Board for Harmonized Construction Codes (CBHCC) is inviting the public to take part in the second public review of proposed changes to the 2020 editions of the National Model Codes. The proposed changes included in this public review will address the following topics in the National Building Code of Canada and the National Plumbing Code of Canada:

  • structural design (Part 9) – lateral loads
  • large farm buildings
  • building fire safety
  • fire protection
  • combustible construction – fire protection and safety
  • fire alarm and detection systems
  • encapsulated mass timber construction
  • spatial separation between buildings
  • accessibility – inclusive plumbing accommodation
  • environmental separation
  • spray-applied polyurethane insulation
  • drainage systems

The public review will run from February 27 to April 27, 2023. More details on how to participate will be sent via the Construction Innovation email distribution list in the coming weeks. To be added to the distribution list, subscribe through the National Research Council of Canada's (NRC) website.

The public review will provide code users and stakeholders with a detailed look at the changes being considered and an opportunity to comment on whether the proposed changes should be approved, modified or withdrawn. Comments received can also inform improvements to the proposed changes. Following the public review, all comments will be considered by the relevant code development committees, and recommendations on the proposed changes will be made to the CBHCC. If approved, the changes will be included in the 2025 editions of the National Model Codes, which are published by the NRC.

Your feedback on the proposed changes will help shape the National Model Codes, which are adopted, with or without modifications, by the provincial or territorial authority having jurisdiction over local building, fire, plumbing and energy regulations.

Public reviews for future sets of proposed changes to the 2020 editions of the Codes are also planned to take place later this year and in 2024.

For further information, please contact the CBHCC at