Proposed changes to B.C.’s building code are set to transform the construction landscape by expanding the use of mass timber to construct taller buildings.

These changes—part of the B.C. Building Code and B.C. Fire Code 2024—are expected to have profound effects on the environment, economy, and housing sector. The proposed changes aim to accelerate construction, enabling the rapid development of schools, shopping centres, and housing.

Under the proposed changes, the height limit for mass timber buildings would increase to as many as 18 stories for residential and office buildings, which is currently at a 12-storey limit. In addition, the changes would allow for more exposed mass timber or fewer layers of encapsulation in some buildings, depending on the building’s height.

“Through our Mass Timber Action Plan, we are investing in mass timber training and finding new avenues to grow our economy while reducing our environmental impact,” says Brenda Bailey, minister of jobs, economic development, and innovation.

The proposed changes are open for public comment on the Canadian Board for Harmonized Construction Codes (CBHCC) website. Following the commenting period, the B.C. government will decide on the readiness of the changes, with key changes expected to be adopted as soon as spring 2024.

Jointly spearheaded by B.C. and Que., the task group developing these proposed code changes reflects a commitment to expanding mass timber use across Canada and have been reviewed by an expert technical advisory group made up of fire safety experts, regulators, engineering, and building code experts.

This plan aligns with B.C.’s efforts to address the housing crisis through initiatives such as the Homes for People action plan and creates more opportunities for mass timber construction, supporting the B.C. government’s $19-billion housing investment.