Canada opens 2026 model code review

Canada’s building rules just moved into their next rewrite cycle — and this is the part where the public can actually weigh in. The Canadian Board for Harmonized Construction Codes opened a national review on April 27 for proposed changes to the 2025 National Model Codes, with the window staying open until June 22. That sounds procedural, but it matters. These model codes are the baseline documents provinces and territories use when they update their own building rules, so a change floated now can eventually affect permits, design choices, inspection checklists, and renovation costs. The catch is that the rules are national models, not automatically binding law everywhere. Provinces and territories decide what to adopt, and when. (cbhcc-cchcc.ca) ### What is being reviewed? This spring review covers proposed changes to the 2025 editions of the National Building Code of Canada, the National Energy Code of Canada for Buildings, and the National Plumbing Code of Canada. It is also the first public review in the 2030 code cycle, which means the board is already collecting and refining changes that could end up in the next full generation of national codes. (nrc.canada.ca) ### Who is running this? The Canadian Board for Harmonized Construction Codes — the CBHCC — develops the National Model Codes. The National Research Council’s Codes Canada group supports the process and publishes the code books. That split matters because the board handles code development and consultation, while NRC is the publishing and technical support arm. ### What kinds of changes are on the table? (cbhcc-cchcc.ca) The headline items are pretty concrete. This review includes proposed changes on modular construction compliance and prescriptive compliance for Energy Performance Tier 2. It also spans accessibility, airtightness, automatic sprinkler systems, drainage, fire protection, HVAC systems, and plumbing materials and equipment. Basically, this is not one narrow housekeeping update — it touches safety, energy use, and how buildings are assembled. (nrc.canada.ca) ### Why does “model code” matter? Because in Canada, national codes are more like the master template than the final rulebook. A province can adopt them quickly, adapt them, or phase them in later. So if you are a builder, designer, supplier, or homeowner planning a major project in 2026 or 2027, the smart move is to watch these consultations early rather than waiting for your local permit office to change its forms. That is where the practical impact shows up. (aibc.ca) ### Who can comment? Not just code specialists. The board says code users, the construction community, interested organizations, and the public can participate. Reviewers can look at each proposed change and comment on whether it should be approved, altered, or rejected. After that, the relevant committees sort through the feedback and make recommendations. (nrc.canada.ca) ### What happens after June 22? Comments go back to the code development committees, which review them and decide what to recommend. If the CBHCC approves a change, it can be folded into the 2030 editions of the National Model Codes. That timeline is the key correction to a lot of quick coverage — this is a review of changes to the 2025 code books, but the process belongs to the 2030 cycle. (cbhcc-cchcc.ca) ### Why start again so soon after the 2025 codes? Because the 2025 editions were only published in December 2025, and code development in Canada is continuous. The board has already flagged bigger priorities for the 2030 cycle, including accessibility, housing supply, and harmonization across jurisdictions. In other words, the system is trying to shorten the gap between emerging building issues and formal rule changes. (boabc.org) ### Bottom line This is one of those technical policy moments that looks dry until you realize where it lands — on construction timelines, compliance costs, and what gets approved on real job sites. The review is open now, runs through June 22, 2026, and gives industry groups and ordinary Canadians a rare chance to push on the rules before provinces turn them into the next round of everyday building requirements. (cbhcc-cchcc.ca 1) (cbhcc-cchcc.ca 2)