Thinking about your next home improvement project? A fresh coat of paint, or something bigger? A major renovation or an addition can be just what your home needs to better suit your family’s needs. But before you run to the hardware store or call up a contractor, it’s a good idea to understand the building permit approvals system.

In Ontario, the Building Code Act, 1992 controls the construction, renovation, and change-of-use of buildings. The Act ensures that buildings are safe and meet requirements for structural integrity, fire safety, energy efficiency, and much, much more. Recently, the province of Ontario updated the regulation that implements the Building Code Act, 1992 after a period of review to harmonize with the National Building Code of Canada 2020. The new, modernized code includes over 1,700 changes to the 2012 edition. As of April 1st, 2025, all permit applications must be submitted using the 2024 Building Code.

Before you run to city hall to get a permit, it’s a good idea to check your municipality’s website for further information. It will tell you what kind of work requires a permit, whether authorities other than the municipality such as conservation authorities need to be consulted, the consequences of carrying out work without a permit, and full application details including required drawings and fees. Before you get a permit, you must ensure that your property and your proposal comply with the zoning by-law for details such as size, lot coverage, use, and setbacks from the property line. If not, a zoning by-law amendment or a minor variance from the by-law will be required. There is a laundry list of other regulations called “applicable law”, which also must be complied with before a permit can be issued. Doing your homework goes a long way toward making sure you get your permit quickly.

It is vital that you work with reputable, licensed designers and contractors who are insured and qualified to perform the work you are paying them to do. They are experts in getting you through the process quickly, efficiently, and without a hitch. An unlicensed contractor, or a family friend who can “get it done” is a recipe for disaster. Doing work without permits can lead to fines from the city, which as the homeowner, you are responsible for.

Understanding and navigating the building permit process might seem daunting, but it’s critical for ensuring your home improvement project is safe, legal, and built to last. By taking the time to research municipal requirements, consulting the appropriate authorities, and hiring qualified professionals, you can avoid costly mistakes, have a smoother renovation journey, and reach your dream home quicker. Doing things the right way today protects your home and investment for years to come.