Accessory Apartments



The Town of Whitby permits accessory apartments in single detached dwellings and semi- detached dwellings subject to the criteria outlined in the by-law amendments and the current Official Plan.

Zoning By-law Provisions

The Accessory Apartment provisions can be found in the General Provisions sections of the Town's Zoning By-laws below:

Current Whitby Official Plan Policy

The current Town of Whitby Official Plan permits accessory apartments. The following excerpt is the Official Plan policy related to accessory apartments: Apartments in Houses
Apartments in houses shall be permitted in single detached and other attached ground related dwellings, in urban residential areas throughout the Municipality subject to the following criteria:

  1. one apartment unit per dwelling;
  2. one parking space per apartment;
  3. capacity of municipal sanitary sewer and water supply;
  4. structural suitability of the building to accommodate alterations for an additional dwelling unit; and
  5. compliance with the provisions of the Ontario Building Code, Fire Code, and all other relevant municipal and provincial standards.

Staff Reports on Accessory Apartments

The Planning Department, By-law Services, and Whitby Fire and Emergency Service prepared the following reports that detail current policies and procedures to address accessory apartments within the Town, and provide discussion and support for the by-law amendments listed above.

Building an Accessory Apartment

Accessory Apartments are required to be registered in the Town of Whitby. Registration of an Accessory Apartment costs $250.00. This is a one-time fee; there may also be fees for inspections and building permit fees and required upgrades. In case of application cancelation by the applicant, only 40% of the application fee will be refunded.

Accessory Apartment Fees

Fee (Excluding Taxed)

HST Applicable

Fee (Including Taxes)

Fee Basis

Accessory Apartment Registration Permit





Transfer of Registration Permit




Per Transfer

Refund – Application reviewed but not issued

60% refund of permit fee




Refund – Permit Issued no construction commenced

40% refund of permit fee




For more information on Accessory Apartments in Whitby, please read the Accessory Apartments Frequently Asked Questions.

Filing a Complaint

To file a complaint regarding a possible by-law contravention, please contact By-law Services by email or complete the online complaint form below.

All complaints, including emails, must contain the complainant's name, address and phone number. Please note that all personal information about complaints is kept confidential.