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Basement Permit Drawings

  • Writer: Alex Axelrod
    Alex Axelrod
  • Sep 12
  • 2 min read

Updated: Sep 18




Basement Permit Drawings in Toronto: Your Guide to Legal and Safe Basement Renovations

Basement entrance
Barrymore Project

Finishing your basement can transform unused space into a functional living area or a legal basement apartment. But before starting, the City of Toronto requires basement permit drawings to ensure your renovation meets the Ontario Building Code and local zoning bylaws.






What Are Basement Permit Drawings?

Basement permit drawings are detailed plans prepared by architects or designers, showing every aspect of your renovation. These include:

  • Floor plans – layout of rooms, walls, and openings.

  • Sections and elevations – ceiling heights, stairs, and structural elements.

  • Structural drawings – modifications to beams, posts, or foundations.

  • Mechanical plans – plumbing, electrical, and HVAC (if required).

  • Fire safety and egress details – essential for legal basement apartments.

These drawings are submitted with your building permit application and are necessary for inspection and approval.


Why Basement Permit Drawings Matter

  1. Ensure Code Compliance – Protect your home and family by meeting safety standards.

  2. Prevent Costly Mistakes – Inspectors follow the approved plans; unapproved changes can cause delays or fines.

  3. Increase Property Value – Properly permitted basements are a valuable asset for resale.

  4. Legal Rentals – For secondary suites, drawings prove that fire separations, exits, and ventilation meet regulations.


Do You Always Need a Permit?

In most cases, yes. Any structural changes, plumbing, electrical work, or creation of bedrooms/units requires a permit. Cosmetic updates like painting or flooring usually don’t.

How Cadaxx Design Can Help

At Cadaxx Design, we specialize in basement permit drawings for Toronto homeowners. Our services include:

  • Site visits and measurements

  • As-built drawings

  • Space planning and design solutions

  • Permit-ready plans

  • Coordination with city examiners

We ensure your project is approved quickly and built safely.

Ready to Start Your Basement Renovation?

Check out our Basement Renovation Projects for inspiration.


Contact Cadaxx Design today for permit-ready basement drawings and professional design services in Toronto.

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