Canadian building code question

What NBC 2020 changes affect building design in Canada?

The 2020 NBC introduced significant changes including provisions for encapsulated mass timber construction (tall wood buildings up to 12 storeys), enhanced accessibility requirements, updated fire safety provisions, and references to improved energy performance standards.

The 2020 edition of the National Building Code of Canada includes some of the most significant changes in recent code history. The allowance for encapsulated mass timber construction up to 12 storeys changed the landscape for wood building design across Canada. Accessibility improvements, updated fire safety provisions, and energy performance references also affect how buildings are designed. The practical impact depends on when and how each province adopts the 2020 NBC provisions.

What to check first

  • The 2020 NBC allows encapsulated mass timber construction up to 12 storeys, a major change for the Canadian construction industry.
  • Accessibility improvements include enhanced barrier-free design provisions for dwelling units and public spaces.
  • Provincial adoption timing determines when these changes take practical effect in each jurisdiction.

Jurisdiction notes

Tall wood buildings

The 2020 NBC introduces encapsulated mass timber construction (EMTC) provisions allowing wood buildings up to 12 storeys, subject to specific fire protection requirements.

Accessibility updates

The 2020 NBC includes enhanced accessibility provisions that expand barrier-free design requirements for dwellings and public spaces.

Provincial adoption varies

Each province adopts the 2020 NBC on its own timeline with its own amendments. Some may adopt it fully, partially, or with modifications.

Work through it in this order

  1. Confirm whether the province has adopted the 2020 NBC edition and which amendments apply.
  2. Identify the specific 2020 NBC changes that affect your building type, occupancy, and construction method.
  3. Review any provincial amendments that modify the 2020 NBC changes for your jurisdiction.
  4. Document the applicable code edition, clauses, and provincial amendments for the project record.

Common questions

Can I build a 12-storey wood building in Canada now?

The 2020 NBC allows it, but only if your province has adopted the 2020 NBC provisions for encapsulated mass timber construction. Provincial adoption timing and amendments vary.

Has every province adopted the 2020 NBC?

No. Provinces adopt new NBC editions on their own timelines. Some may still be on the 2015 or earlier edition, or may have adopted the 2020 edition with amendments.

Do the 2020 NBC changes apply to my current project?

That depends on the code edition in force in your province at the time of your permit application. Check with your local authority to confirm.