You'll need to submit a site plan along with your building permit or Planning Act application. A site plan consists of a detailed drawing of any new building or development plan. It shows where all existing and proposed buildings are located on your property and the setbacks of the structure to the property lines.
Sample site plan
Download and view a sample site plan to help you create a site plan for your next building or development project. Depending on the scope and scale of the project, you may need to hire a professional (i.e., Ontario Land Surveyor, Engineer, etc.) to help with developing a site plan.