What renovations require a permit in Ontario?

In Ontario, most structural changes, electrical work, plumbing modifications, and additions require building permits, with specific requirements varying by municipality - here's what Ottawa homeowners need to know.

Major Renovations Requiring Permits in Ottawa

Structural Changes: Any work affecting load-bearing walls, floor joists, roof structure, or foundation modifications requires a permit through the City of Ottawa Building Code Services (613-580-2424). This includes removing walls, adding beams, or changing structural elements.

Electrical Work: All electrical installations and modifications require permits from the Electrical Safety Authority (ESA). Only Licensed Electrical Contractors can pull these permits, though homeowners can do their own work with proper ESA inspection. Check contractor licenses at esasafe.com/contractor-locator.

Plumbing Systems: New plumbing installations, relocating fixtures, or adding bathrooms need City of Ottawa permits. This includes moving sinks, toilets, adding powder rooms, or installing new water lines.

HVAC and Gas Work: Heating, ventilation, and air conditioning installations require permits. Gas work specifically needs TSSA-certified technicians (G1/G2 certification). Verify technicians at tssa.org and expect both TSSA and City permits for gas conversions.

Specific Ottawa Permit Requirements

Kitchen Renovations: Permits needed when moving plumbing, adding electrical circuits, or removing walls. Simple cabinet replacement typically doesn't require permits, but electrical upgrades for new appliances often do.

Bathroom Renovations: Almost always require permits due to plumbing and electrical work. Moving fixtures, adding exhaust fans, or installing heated floors all trigger permit requirements.

Basement Finishing: Requires permits for electrical, plumbing, and if creating separate dwelling units. Secondary suites have additional zoning compliance requirements and longer approval times (6-12 weeks).

Additions and Decks: Any addition to your home's footprint requires permits. Decks over 24 inches high or attached to the house need permits. Detached decks under 108 square feet and under 24 inches high are typically exempt.

What Doesn't Require Permits

Cosmetic Updates: Painting, flooring replacement (same level), cabinet refacing, and fixture replacement in existing locations typically don't need permits.

Minor Repairs: Replacing like-for-like components such as windows (same size/type), roofing materials, or siding usually don't require permits.

Ottawa Permit Process and Costs

Simple permits (decks, fences) take 10-15 business days and cost $100-300. Renovation permits require 15-25 business days with fees ranging $200-500+. Complex projects like additions can take 4-8 weeks with costs from $500-2000+.

Submit applications through ottawa.ca/building or visit the Building Code Services office. Include detailed drawings, structural calculations if required, and proof of WSIB coverage for contractors.

Red Flags and Protection

Never work with contractors who say "we don't need permits" for work that clearly requires them. Unpermitted work can affect insurance claims, resale value, and safety. Always verify contractor licenses through ESA (electrical), TSSA (gas), and ensure they have WSIB clearance certificates.

For current permit fees and specific requirements, contact City of Ottawa Building Code Services at 613-580-2424 or check ottawa.ca/building. The permit process protects your investment and ensures work meets Ontario Building Code standards.