Home addition Permit Checklist in Whitby, Ontario

Home addition permit checklist

Use a project-specific home addition permit checklist for Whitby, Ontario: documents, next steps, source review date and official references.

Focused project answerReviewed Oct 1, 2026

Use this before you submit

5 items to prepare for this project.

This checklist is generated only when BuildRules has enough project-specific documentation and source context to make a separate page useful.

Project template

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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AdditionPermit required

Whitby lists additions among typical projects that require a building permit.

Official sourceTown of WhitbyBuilding Permits · Residential permit types including decks, basements, garages, additions and ADUs

Verified2026-10-01Open proof

Application typeResidential Alterations / Additions

Whitby accepts Part 9 Residential Alterations / Additions applications through E-Portal.

Official sourceTown of WhitbyBuilding Permits · Residential permit types including decks, basements, garages, additions and ADUs

Verified2026-10-01Open proof

Zoning / applicable lawStill applies

The permit process remains subject to applicable zoning and other approvals.

Official sourceTown of WhitbyBuilding Permits · Residential permit types including decks, basements, garages, additions and ADUs

Verified2026-10-01Open proof

The main guide keeps the permit trigger, zoning questions, documents, fees, timing and next steps together.