Decks
Check size / scopeCaledon requires a building permit when a deck is higher than 0.60 m (24 in) above finished grade at any point, and explicitly exempts decks not more than 0.60 m high.
Caledon, ON
Building permits in Caledon
Caledon says a building permit is required for most building, renovation and construction projects.
Official sources checked Sep. 24, 2026
Permit rules by project
Pick the project that matches your work. These are starting rules for Caledon; property-specific zoning, heritage and trade approvals can still apply.
Sheds & accessory buildings
Check size / scopeCaledon’s current page describes both “15 m² or more” as permit work and a qualifying shed “not more than 15 m²” as exempt.
Basement renovations
Permit requiredCaledon lists finished basements among projects requiring a building permit.
Secondary suites & ADUs
Permit requiredCaledon lists construction of a basement apartment among projects requiring a building permit.
Home additions
Permit requiredCaledon lists additions to existing buildings—including upper storeys, attached garages/carports, sunrooms, porches and qualifying decks—as permit-required work.
Interior alterations
Depends on scopeCaledon requires permits for structural/material alterations, while painting, some replacements and other maintenance scopes are listed as no-permit work. Interior scope determines the result.
Walls / structural work
Permit requiredCaledon lists adding/removing structural walls and enlarging or relocating door/window openings among projects requiring a building permit.
Pools / hot tubs
Permit requiredCaledon requires a swimming-pool enclosure permit for pools, hot tubs and spas under its Fence By-law process.
Garages / carports
Depends on scopeCaledon requires permits for attached garages/carports and detached accessory structures larger than 10 m²; smaller detached structures can follow different rules.
Plumbing / HVAC
Depends on scopeCaledon requires permits for installation/modification of heating or plumbing systems, while same-location fixture replacement and certain house equipment replacements are exempt.
Fences
Confirm with cityCaledon’s current building-permit and pool-enclosure information does not give one ordinary-fence permit rule that applies to every property. Confirm height, location and any pool-enclosure requirements with the Town.
Retaining walls
Depends on scopeCaledon requires a building permit for a retaining wall more than 1 m high when it is on or adjacent to public property, building entrances, or private property accessible to the public; retaining walls on private property not accessible to the public are listed as no-building-permit work.
Demolition
Permit requiredCaledon lists demolition or removal of a building or a portion of a building among work requiring a building permit.
Apply or ask Caledon
Use the municipality’s permit office for current forms, fees, drawings and questions about your property.
Caledon Building Services
- Address
- 6311 Old Church Road, Caledon, ON L7C 1J6
Your application route
Open the official permit page ↗Use the official permit page to confirm project requirements, forms, fees and the current application process.
Good to know in Caledon
- The town reviews plans for Ontario Building Code, zoning and other applicable-law compliance and accepts building-permit applications online.
- Caledon states that decks higher than 24 inches require a building permit and that a qualifying one-storey storage shed up to 15 m² can be exempt if it is detached and has no plumbing.
- In Ontario, the municipal building permit sits within the provincial building-code system, but zoning, conservation, heritage, utilities and some trade approvals can still require separate checks.
Official sources
Use these official links to confirm the current rule for your Caledon property.
View 2 official sources
Sources checked Sep. 24, 2026. Requirements can change; the municipality makes the final permit decision.
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