City of Toronto
2026 Rules
Home Addition Permit Guide
Complete guide to home addition permits in Toronto, including fees, requirements, and how to apply.
PERMIT REQUIRED
Estimated Fee
$18.56/m² + $56.33/unit if new unit created. Minimum $214.79
When You Need a Permit
Permit Required If:
Always required for any addition to the building
Fees
$18.56/m² + $56.33/unit if new unit created. Minimum $214.79
Per square metre
Minimum fee: $214.79
Processing Time
20-30 business days
Typical processing time
Permits Required
- building Permit
- plumbing Permit
- hvac Permit
- electrical Permit
Documents You'll Need
- 1Completed application form
- 2Architectural drawings (plans, elevations, sections)
- 3Structural drawings
- 4Site plan with setbacks
- 5HVAC and plumbing drawings
- 6Grading/drainage plan
- 7Energy efficiency compliance (SB-12)
- 8Property survey
Common Gotchas
- •May need Committee of Adjustment approval for variances
- •Existing foundation may need upgrading
- •Tie-in to existing structure is critical
- •HVAC system may need upgrading
- •Electrical panel may need upgrading
- •Multiple inspections required throughout construction
Zoning Considerations
- •Setback requirements (front, rear, side yards)
- •Height restrictions
- •Lot coverage limits
- •Floor Space Index (FSI) limits
- •May require minor variance approval
How to Apply
Toronto Building
416-397-5330
Fee Payment
416-397-5222
Sources
- • City of Toronto Building Permits FAQ
- • Ontario Building Code 2024
- • Toronto Zoning By-law 569-2013
Disclaimer: This information is for general guidance only and is not legal advice. Permit requirements may change. Always verify with the City of Toronto Building department before starting work.