Home Addition Permit Checklist — Ontario
Planning a home addition in Ontario? Use this checklist to ensure your permit application is complete and avoid delays. Incomplete applications are the #1 cause of permit processing delays.
Required Documents
- Completed permit application form (from your municipality)
- Site plan showing addition location and all setbacks to property lines
- Existing and proposed floor plans with room dimensions
- Exterior elevations (all sides affected by the addition)
- Building cross-sections showing floor-to-ceiling heights and structural assembly
- Foundation plan for the addition
- Structural details for connections to existing building
- Energy compliance form (SB-10 or SB-12)
- Schedule 1 — Designer Information form (with your BCIN designer's information)
- Lot survey or reference plan
Additional Requirements
Some municipalities may require a lot grading plan, tree preservation plan (arborist report), heritage review, or geotechnical report depending on your property's conditions and location.
Ready to get started?
Call 416-558-9607 for a free consultation or request a quote online.