How to Legalize Unpermitted Work in Ontario
If you've discovered unpermitted work on your property — or did work without a required building permit — it's important to legalize it. Unpermitted work can cause problems when selling, refinancing, or insuring your home, and may violate the Ontario Building Code.
Steps to Legalize Unpermitted Work
- Assess the work: Determine what was done without a permit and its current condition
- Contact your municipality: Speak with the building department about their process for retroactive permits
- Hire a BCIN designer: Prepare as-built drawings showing the existing conditions — Ontario Design Studio can help
- Apply for a permit: Submit the as-built drawings with your permit application
- Pass inspections: The building department will inspect the work — you may need to open walls or ceilings for inspection
- Make corrections: Any work not meeting OBC standards must be brought into compliance
Ready to get started?
Call 416-558-9607 for a free consultation or request a quote online.
Related Resources
- Permit Rejected? We Can Help
- Do I Need a Permit for My Renovation?
- Building Permit Drawing Cost Guide
Frequently Asked Questions
Can I sell my house with unpermitted work in Ontario?
Technically yes, but unpermitted work must be disclosed to buyers and can significantly impact your home's value, insurance, and sale price. Most real estate lawyers and buyers will request that unpermitted work be legalized before closing.