Project template
Your preparation checklist
Use it as a working list. The final submission still needs to match your actual scope and the City’s current requirements.
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What to do next
- Measure the existing opening
- Confirm whether size or location changes
- Check whether structural support is affected
- Prepare drawings before enlarging or creating an opening
Official sources behind this page
Toronto lists new windows or doors where none existed before as permit-required work.
Enlarging or relocating existing windows or doors is listed as permit-required work.
Certain houses can replace a window or door in the existing opening without a building permit when the City's listed conditions are met.
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the windows / doors guide