Code & Safety Review
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In most cases, yes. Creating or legalizing a secondary suite usually requires a building permit because the municipality must review fire separation, exits, ventilation, smoke/CO alarms, and other life-safety requirements. A basement apartment is one common type of secondary suite, but secondary suites can also be located elsewhere in a house where permitted.
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Permit Works can review the project scope, prepare permit-ready drawings, coordinate consultant input where needed, and support the application through city comments.
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See local zoning and permit information for Toronto, Markham, Richmond Hill, Vaughan, Mississauga, and Brampton.
Send your project address, municipality, and proposed work. Permit Works can review the scope and identify the drawings, consultant coordination, and permit support that may be needed.
Practical articles to help you understand local permit requirements, drawings, submissions, and common approval issues.
Planning to convert your basement into a legal apartment? Learn the key permit, building code, fire safety, entrance, inspection, and drawing requirements before you start.
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Not sure if a basement apartment is legal? Learn how to check permits, identify red flags, understand real estate listing claims, and take the right steps to legalize a basement apartment in Ontario.
Read guide
Ceiling height, separate entrance, window area, egress, and smoke alarms are common red flags when checking whether a basement apartment may meet Ontario Building Code requirements.
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Planning a basement entrance in Brampton? Learn how permits, ARU access rules, structural drawings, drainage details, and mandatory inspections affect the design.
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Planning a Toronto basement walkout? Learn which permit drawings, zoning checks, structural details, forms and inspections may be required before construction.
Read guideShare your project details with Permit Works and we can help identify the drawings, documents, and permit pathway needed before you submit.
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