Building Code Violations in Ontario

Updated: June 2026

A Building Code Violation can create serious delays for a property owner, contractor, business tenant, or landlord. In many cases, the violation appears during a municipal inspection, permit review, renovation, change of use, occupancy request, or after work has been completed without proper approval.

In Ontario, building inspectors review construction and renovation work to confirm that the work meets applicable requirements under the Ontario Building Code, approved drawings, permits, and municipal procedures.

What Is a Building Code Violation?

A Building Code Violation means that part of a building, renovation, system, or construction project does not meet required standards or was not completed according to approved permit documents.

Violations can apply to residential, commercial, industrial, retail, restaurant, office, and multi-unit properties. They may involve structural work, fire separations, accessibility, plumbing, HVAC, exits, washrooms, stairs, occupancy, or other building safety items.

Common Building Code Violations in Ontario

Some of the most common violations include:

• Renovations completed without a building permit
• Work that does not match approved permit drawings
• Structural changes completed without engineering approval
• Missing or incomplete fire separations
• Improper exits, corridors, doors, or path of travel issues
• Accessibility issues in commercial spaces
• Plumbing or HVAC work completed without proper inspection
• Unapproved basement apartments or second dwelling units
• Open permits that were never finalized
• Occupancy or change-of-use problems

How Building Code Violations Are Usually Discovered

A violation may be found during different stages of ownership or construction. Common situations include:

• A municipal inspector visits the property
• A permit application is submitted and old work is discovered
• A buyer or lender requests confirmation that permits are closed
• A tenant applies for a business licence or occupancy
• A neighbour or third party makes a complaint
• A contractor starts work and uncovers unapproved previous renovations
• Fire, ESA, health, or by-law departments identify related concerns

What Happens If the Violation Is Not Corrected?

Ignoring a Building Code Violation can create additional problems and costs. The municipality may continue enforcement until the required corrections are completed and accepted.

• Orders to Comply
• Stop Work Orders
• Additional inspection fees
• Municipal fines or legal proceedings
• Delays in occupancy approval
• Problems selling, refinancing, or leasing the property
• Insurance or liability concerns
• Additional construction costs if issues worsen

How to Correct a Building Code Violation

The correction process depends on the type of violation. Some issues can be corrected with a small repair and inspection, while others require permit drawings, engineering review, licensed trades, and a full municipal approval process.

Typical steps include:

• Review the inspector’s comments, notice, or Order to Comply
• Confirm the required corrections and deadlines
• Collect existing drawings, permits, reports, and site information
• Schedule a site review with qualified professionals
• Prepare drawings, engineering letters, or permit applications if required
• Coordinate licensed trades and general contracting work
• Complete the corrective work
• Book inspections and obtain confirmation from the municipality

When Do You Need an Engineer or Designer?

You may need an engineer, architect, designer, or other qualified professional when the violation involves structural work, fire separations, occupancy changes, accessibility, HVAC, plumbing, or significant alterations to an existing building.

Examples include removing load-bearing walls, creating new openings, changing commercial layouts, adding washrooms, altering exits, legalizing previous renovations, or correcting work that was completed without approved drawings.

How Ontario Compliance Can Help

Ontario Compliance helps clients organize the process and coordinate the right professionals, trades, permits, and inspections to move toward compliance.

We can assist with:

• Reviewing Building Code violation notices and inspection comments
• Coordinating drawings, engineers, designers, and permit applications
• General contracting and corrective construction work
• Fire separation and life safety corrections
• Plumbing, HVAC, electrical, and ESA coordination
• Permit closure and inspection coordination
• Commercial, residential, retail, restaurant, and office compliance projects

Need Help With a Building Code Violation?

If you received a Building Code violation, Order to Comply, Stop Work Order, or inspection deficiency, Ontario Compliance can help you understand the next steps and coordinate a practical solution.