What is the building code height for a detached garage in the City of Calgary?

Under the Alberta Building Code, detached accessory buildings like garages can be up to 4.5 meters (14.8 feet) in height without requiring a building permit, but the City of Calgary's zoning bylaws may impose additional restrictions.

The Alberta Building Code (2023 Alberta Edition) allows detached accessory buildings under 10 square meters (108 sq ft) to be built without a building permit, provided they don't exceed 4.5 meters in height. However, most garages exceed this size threshold and will require a building permit regardless of height.

For City of Calgary zoning, the height limits for detached garages depend on your specific zoning district, but typical residential zones allow:

• Single-car garages: Usually up to 4.5 meters (14.8 feet) to the highest point


• Two-car garages: Same 4.5-meter limit in most residential districts


• Garages with lofts: May require additional height, which could trigger discretionary approval

The height is measured from average grade to the highest point of the roof. This includes any cupolas, weather vanes, or other roof projections. Calgary's zoning also considers the building envelope - your garage must fit within the allowable building area for accessory buildings on your lot, which varies by zone and lot size.

Important Calgary-specific considerations include setback requirements (typically 1.2 meters from property lines), lot coverage limits (accessory buildings usually can't exceed 40% of rear yard area), and potential heritage district restrictions in areas like Mount Royal, Elbow Park, or other established neighborhoods.

Next steps: Check your property's specific zoning designation on the City of Calgary's land use map at calgary.ca, then apply for a building permit through calgaryplanningpermit.ca. Even if your garage meets height requirements, you'll still need permits for electrical service, and potentially a development permit if you're in a restrictive zone. The building permit application will confirm exact height allowances for your specific property and zoning district.

For complex garage designs or if you're near the height limit, consider consulting with a designer familiar with Calgary's zoning bylaws before finalizing your plans.

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