Navigating 2024 Ontario Building Code Permit Timelines and Change of Use Requirements
Sarah's Expert Insight
OBC Compliance Specialist
"In regions like Muskoka and the rural outskirts of London, the synchronization between sewage permits and building permits is the most common bottleneck we manage at empcontracting.ca Inc. It is critical to remember that the 10-to-30-day review clock only ticks on business days and only after the sewage permit is secured, making early application coordination vital for your project's success."
Understanding the 2024 Ontario Building Code (OBC) is essential for any successful renovation or new build. As your trusted partner, empcontracting.ca Inc. your construction contractor in London, Ontario, ensures your project adheres to the specific timelines and permit requirements set out in Division C of the OBC.
Ontario Building Code Permit Issuance Timelines
The OBC establishes strict timelines for the Chief Building Official to either issue or refuse a permit application. These timelines are categorized by the complexity of the structure:
10-Day Review Period
- Residential houses (where no dwelling unit is above another).
- Detached structures serving a house (up to 55 m²).
- Tents, signs, and demountable stages.
15-Day Review Period
- Small buildings (typically Part 9 buildings) and farm buildings not exceeding 600 m².
20-Day Review Period
- Large buildings (Part 3) and retirement homes.
- Farm buildings exceeding 600 m².
30-Day Review Period
- Post-disaster buildings and high-rise structures involving complex fire protection systems.
Calculating Business Days and Municipal Holidays
It is important to note that the 'days' referred to in the OBC are business days only. Saturdays, Sundays, and municipal holidays—when the principal authority's office is closed—do not count toward the review period. Furthermore, if a building requires a sewage system, the review period for the building permit does not begin until the sewage system permit has been officially issued.
Section 10: Change of Use Permits
Even if no physical construction is planned, a permit is required under Section 10 of the Act if the hazard level of a building increases. This includes:
- Changing the major occupancy of a building.
- Converting a single Group C (residential) suite into multiple suites.
- Converting spaces into gaming premises.
- Changing a farm building into a different major occupancy.
Partnering with empcontracting.ca Inc. your construction contractor in London, Ontario, ensures that these regulatory hurdles are managed professionally, keeping your project on track and legally compliant.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.