This national public review runs from October 24 to December 23, 2022.

The Canadian Commission on Building and Fire Codes (CCBFC) invites Codes users and stakeholders to participate in the fall 2022 public review of proposed changes to the National Model Codes:

  • National Building Code of Canada (NBC) 2020
  • National Fire Code of Canada (NFC) 2020
  • National Energy Code of Canada for Buildings (NECB) 2020
  • National Plumbing Code of Canada (NPC) 2020

See the Summary of proposed changes below for more details. The proposed changes include updates to the documents referenced in the National Model Codes.

The purpose of this public review is to:

  • provide Codes users and stakeholders with a detailed look at proposed changes, and
  • seek input on the proposed changes.

The public review will close at 11:59 p.m. PST on December 23, 2022, after which comments will no longer be accepted.

The relevant standing committees of the CCBFC will review comments received during the public review period. Based on their evaluation of the comments for each proposed change, the committees will then either withdraw the proposed change, recommend that it be reviewed further for possible re-submission in revised form in a future public review, or recommend that it be approved, with or without modification.

If approved, the code changes will be incorporated in the 2025 editions of the National Model Codes.

Five steps for submitting comments on proposed changes

Step 1: Read the guidelines for writing comments.
Step 2: Read the instructions for submitting comments.
Step 3: Read the proposed changes for writing comments.
Step 4: If you have a comment, click the “Submit a comment” link located at the beginning of each proposed change, which will take you to the online comment form. Only comment forms that are submitted online will be accepted.

You may submit other related documents, such as reports, by e-mail, mail or fax.

Important: Submit one comment form per proposed change. If you are commenting on more than one proposed change, use a separate form for each one.
Step 5: Read What happens to public review comments?

Thank you for contributing to the development of the National Model Codes.

Important links:

Updates to referenced documents

Updates documents referenced in the National Model Codes.
Description of the updates to referenced documents.

National Building Code of Canada

Fixed seating in assembly occupancies (Part 3)

Updates the requirements for fixed seating in assembly occupancies to further align with common industry practice and the requirements of NFPA 101, “Life Safety Code.”

Gendered washrooms (Part 3)

Clarifies the requirement for a minimum number of water closets and that non-gendered washrooms are permitted in buildings.

Penetrations (Part 3)

Clarifies that, where a fire alarm system is required, the permitted service penetrations in a portion of a building are required to be firestopped in accordance with Subsection 3.1.9.

Size limit for open stringers in stairs (Part 3)

Limits the size of the triangular openings formed by the stair risers and treads and bottom element of a required guard to align the requirement with existing Part 9 provisions.

Tactile direction indicators (Part 3)

Introduces the requirement that tactile direction indicators, where used, should be configured and installed in accordance with CSA B651, “Accessible design for the built environment,” for consistent and appropriate directional messaging.

Self-service storage buildings (Part 9)

Clarifies that the applicable fire-protection requirements for self-service storage buildings fall under Part 3.

Structural design (Part 9) – wall studs

Updates Table to clarify that 38 mm × 140 mm studs spaced at 400 mm on centre may be used in exterior walls to support only a roof or a roof plus one floor.

National Fire Code of Canada

Non-fixed seating in assembly occupancies (Part 2)

Updates the requirements for seating in assembly occupancies to further align with common industry practice and the requirements of NFPA 101, “Life Safety Code,” that apply specifically to non-fixed seating.

Vent pipe outlets for storage tanks (Part 4)

Harmonizes the requirements for vent pipe outlets of aboveground and underground storage tanks; and clarifies that emergency vent outlets connected to a secondary containment of a double-walled storage tank are not required to discharge outside buildings.

National Plumbing Code of Canada

Protection of potable water (Part 2)

Adds references to NSF/ANSI/CAN 61, “Drinking Water System Components - Health Effects,” to address the protection of potable water from chemical contamination.

Relief valves on hot water tanks (Part 2)

Introduces the requirement that relief valves for hot water tanks be connected to a discharge pipe that runs down the length of the tank to divert the steam or hot water that may be released to a proper discharge location.

National Energy Code of Canada for Buildings

Part-load performance of boilers and furnaces (Part 8)

Incorporates return-hot-water temperature into the calculation of the part-load performance of boilers and furnaces.

Combined proposed change forms are available in PDF file format

2022: Proposed changes to NBC 2020, NFC 2020, NPC 2020, NECB 2020 – combined file (PDF – 1,96 MB)