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
- Check zoning first
- Define the addition footprint and height
- Prepare coordinated plans
- Submit before construction starts
Official sources behind this page
Addition sizePermit required regardless of size
East Gwillimbury explicitly lists additions to existing buildings, regardless of size, as permit-required.
Town of East GwillimburyBuilding Permits · Permit triggers and exemptions for decks, sheds and additions
2026-10-02Open proof
ZoningCheck before applying
The Town directs owners to review zoning for setbacks, building size, height and permitted uses before the permit application.
Town of East GwillimburyBuilding Permits · Permit triggers and exemptions for decks, sheds and additions
2026-10-02Open proof
Other approvalsMay apply by property
Permit review can also depend on other applicable laws and site conditions.
Town of East GwillimburyBuilding Permits · Permit triggers and exemptions for decks, sheds and additions
2026-10-02Open proof
Need the full project answer?
The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.
Open the home addition guide