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Detached garage building permits in Waterloo, Ontario
Planning a detached garage in Waterloo? Here is what the City of Waterloo says about permits for detached garages, with links to the official pages.
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Do you need a permit?
- You need a building permit if your detached garage is over 10 m² (107 ft²) or includes plumbing (any size). City of Waterloo
- Even if you do not need a permit, you must still follow zoning rules.
Who can draw the plans
- The City says a homeowner can draw plans for their own shed or garage. City of Waterloo
- Anyone can draw them if the structure is 55 m² (592 ft²) or smaller; an architect, engineer or BCIN-qualified designer is required for larger or more complex projects.
Drawings you need
- Site plan: lot size, garage location, distances to property lines, all existing buildings.
- Foundation plan: material and depth (helical piles if used).
- Floor plan: use, dimensions, framing, door and window sizes, lintel sizes.
- Cross section: wall and roof materials.
- Exterior elevations: height from grade to peak, roof slope, doors and windows.
- A plumbing layout if there is plumbing, and an engineer's stamped truss layout if trusses are proposed.
Zoning: setbacks, size and height
Confirming zoning before you apply is optional. To check, contact [email protected] or 519-747-8752 with your setbacks, size and lot coverage, and height and placement. City of Waterloo
Forms, fees and review time
- Most homeowners complete the Owner Declaration Form with the Permit Application Form; a Schedule 1 Designer Form is needed if you hire a designer. City of Waterloo
- Fee for a detached garage: $132 per bay (HST does not apply), paid when you apply.
- Typical review time: 10 business days.
How to apply
- Apply online through the City's building permit portal (upload drawings and forms as PDFs), or in person at the 2nd floor of City Hall. Apply for a building permit
- After approval, print the permit package, keep it visible on site, and book the mandatory inspections through the portal.
Draw your plan first. Garage Planner lets you set the size, doors, windows and roof of your detached garage and print a scaled draft drawing to bring to your permit application.
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Sources
Facts on this page are from the City of Waterloo pages listed above, checked November 4, 2026.