Planning
Overhead Door Size for Detached Garages
By Chad Ruppert
Why many Alberta homeowners choose an 8' overhead garage door instead of a 7' door, especially for trucks, SUVs, resale value, and future use.
The short answer
An 8' overhead door is usually the better long-term choice for a detached garage when the wall height and bylaw limits allow it. A 7' door can work, but it can feel tight for modern pickup trucks, large SUVs, roof racks, lifted vehicles, and future resale expectations.
Why 7' doors can feel limiting
Many older garages used 7' high overhead doors because smaller vehicles were common. Today, full-size trucks and larger SUVs can be tall enough that a 7' opening leaves very little practical clearance, especially with winter tires, racks, cargo boxes, or a slightly sloped driveway approach.
Why 8' doors help resale value
A buyer may not notice a standard 7' garage door until they try to park a truck or SUV inside. An 8' overhead door gives the garage a more flexible, modern feel and can make the space easier to market because it accommodates a wider range of vehicles and uses.
Door height affects the garage elevations
The overhead door size is not just a product choice. It affects the exterior elevations, header height, wall framing, ceiling clearance, roof proportions, and how the building looks from the lane. The drawings should show the selected door size before the package goes to the municipality.
Check height limits before assuming an 8' door works
An 8' door may require taller walls or a different roof shape. Calgary, Edmonton, Airdrie, Cochrane, Rocky View County, and Mountain View County all review height through their own bylaw rules, so the door choice should be checked against eave height, peak height, and overall garage design.
How garagepermits.ca helps
Overhead door height should be decided before drawings begin because it affects the elevations, wall height, header layout, roof shape, and sometimes the municipality's height review. We include door sizes clearly in the permit drawings so the design matches how you plan to use the garage.
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Learn moreRelated FAQ
Short answers to common garage permit questions.
Do I need a building permit for a detached garage?
Yes. In Calgary and most Alberta municipalities, a detached garage over 10 square meters requires a building permit before construction begins. The permit drawings show the garage location, size, setbacks, elevations, sections, and construction details for review.
What drawings are required for a detached garage permit?
A detached garage permit usually requires a site plan, floorplan, elevations, cross sections, and construction details. These drawings help the municipality confirm zoning, setbacks, height, lot placement, and building code compliance.
How much do standard garage permit drawings cost?
Standard garage permit drawings start at $695 for detached garages up to 592 square feet. Municipal application and building permit fees are separate and vary by city.
How fast can I get detached garage permit drawings?
Most standard detached garage drawing packages are completed in 2-3 days after the required project information is received. Custom garages, suites, workshops, and unusual sites may need a quoted timeline.
What if my garage is oversized or includes a suite?
Oversized garages, backyard suites, garage suites, and custom garage projects are quoted individually. These projects can require additional design coordination, foundation details, engineering, or deeper municipality review.
What happens if the permit reviewer asks for changes?
If the permit reviewer asks for clarification, the drawing set can be revised to respond to municipal review comments. Most comments involve setbacks, site information, construction notes, or missing details that need to be shown more clearly.
When does a detached garage need a development permit?
A development permit may be required when the garage does not meet land use bylaw rules for setbacks, height, lot coverage, placement, or other site conditions. Many standard detached garages only need a building permit, but the municipality decides based on the property and design.
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