Additional dwelling unit Permit Checklist in Whitby, Ontario

Additional dwelling unit permit checklist

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

Focused project answerReviewed Oct 1, 2026

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4 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.

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ADU building permit application
Required drawings and design guide information
Zoning/property information
Electrical Certificate of Acceptance before registration where applicable

What to do next

Confirm ADU type and zoning eligibility
Prepare the permit package
Complete required inspections
Register the completed ADU with the Town

Official sources behind this page

Building permitRequired

Whitby provides a dedicated building permit process for Additional Dwelling Units.

Official sourceTown of WhitbyAdditional Dwelling Units · ADU eligibility, permits, inspections and registration

Verified2026-10-01Open proof

ZoningConfirm property eligibility

The Town directs owners to review zoning and submit a Planning Inquiry to verify whether an ADU is permitted on the property.

Official sourceTown of WhitbyAdditional Dwelling Units · ADU eligibility, permits, inspections and registration

Verified2026-10-01Open proof

RegistrationRequired

Whitby states that all property owners with an ADU are required to register the unit with the Town.

Official sourceTown of WhitbyAdditional Dwelling Units · ADU eligibility, permits, inspections and registration

Verified2026-10-01Open proof

Need the full project answer?

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

Open the additional dwelling unit guide