Scope of Work
An additional dwelling unit (apartment) means a separate dwelling unit located in the same building as an associated principal dwelling unit in a detached dwelling, linked-detached dwelling, semi-detached dwelling, duplex dwelling, or townhouse dwelling.
If the additional dwelling unit is in a separate building on your property, please refer to new dwelling unit page.
If the additional dwelling unit is attached to the main dwelling and an addition is required, please refer to Addition/renovation page.
Required Documentation
Required Inspections
Plumbing Underground
Required before covering underground plumbing. An air or water test is required.
Framing
Required at completion of structural framing.
Fire Separation
Required after completion of wall, floor, and shaft separations and fire stopping, before interior finishes are installed.
Mechanical (HVAC) Rough-In
Required after rough-in of fireplaces, ductwork, heating, ventilation, and air conditioning systems.
ESA rough-in required.
Fireplaces and Chimneys
Inspection required at commencement of installation.
Plumbing Rough-In
Required at completion of drains, waste, vent, and water piping systems. An air or water test is required.
Insulation / Vapour Barrier
Required after installation of insulation, air barrier, and vapour barrier.
Occupancy
A person may occupy a dwelling provided that an occupancy permit has been issued by the building inspector. To be eligible there must be no outstanding Building Code Orders and certain building components and systems must be complete and inspected under Division C 1.3.3.
Final Inspection
Required upon completion of the building.
Professional Design Requirements
- All drawings submitted for building permit applications must be prepared and reviewed by a qualified designer, architect, or professional engineer.
- Glass guardrail specifications stamped by a professional engineer are required where applicable.
Additional Information
- Planning approval is required before a building permit can be issued.
- An Electrical Safety Authority (ESA) final report is required to close the permit, where applicable.
Important
The information provided on this page is intended for general informational purposes only and serves as an overview of common permit requirements based on project type.
Permit requirements, required documents, inspections, and approvals may vary depending on the scope of work, site conditions, applicable laws, and the requirements of the Ontario Building Code and the Chief Building Official (CBO).
Additional information or documentation may be required during the review of your application.