Canadian building code question

What are the building code requirements for parking garages in Canada?

Parking garage requirements depend on whether the garage is open-air or enclosed, above or below grade, its relationship to the rest of the building, occupancy classification, ventilation provisions, fire separation requirements, structural design loads, and how the province adopts or amends the national model code.

Parking garages involve overlapping requirements from fire safety, structural design, ventilation, and occupancy separation. Whether the garage is open-air or enclosed, above or below grade, and how it connects to the rest of the building all change which provisions apply. The safest approach is to classify the garage condition first, then verify each applicable provision set.

What to check first

  • Classify the garage as open-air or enclosed and above or below grade because these distinctions drive ventilation, fire separation, and sprinkler requirements.
  • Check the fire separation requirements between the garage and adjacent occupancies.
  • Verify ventilation requirements, especially for enclosed or below-grade garages where mechanical ventilation is typically required.

Jurisdiction notes

National baseline

Start with the NBC provisions for storage garages including occupancy classification, fire separation, ventilation, and sprinkler requirements.

Province and edition check

Confirm how the province adopts the NBC storage garage provisions and whether additional requirements apply for below-grade or enclosed conditions.

Project-specific variables

Open-air versus enclosed, above versus below grade, building height, sprinkler status, connection to other occupancies, and EV charging provisions can all affect the requirements.

Work through it in this order

  1. Classify the garage condition: open-air or enclosed, above or below grade, standalone or part of a mixed-use building.
  2. Look up the NBC provisions for storage garages covering fire separation, sprinklers, ventilation, and construction type.
  3. Check structural design load requirements for the garage.
  4. Verify provincial adoption and any amendments, then document the cited sections.

Common questions

Are parking garages always required to be sprinklered?

Not always. The sprinkler requirement depends on the garage type, building classification, and provincial adoption. Open-air garages may have different sprinkler requirements than enclosed garages.

What ventilation requirements apply to parking garages?

Enclosed and below-grade garages typically require mechanical ventilation to manage exhaust fumes. Open-air garages that meet specific opening criteria may rely on natural ventilation.

Does the building code address EV charging in parking garages?

Some provincial codes and recent NBC editions include provisions related to EV charging infrastructure in garages. Check the applicable provincial adoption for current requirements.