Under the Ontario Building Code Act, a building permit is required to construct, demolish, renovate, alter, install, or change the use of a building.
The following is a list of typical projects or situations that require the issuance of a building permit prior to construction:
- New buildings or structures greater than 15 square metres (161 ft²) in area, measured by the outside dimensions. This includes sheds, sleeping cabins, or other accessory buildings or structures, including sheds and shed packages purchased from a store.
- Sleeping cabins of any size, including those 15 square metres (161 ft²) or less in area.
- Additions to existing buildings or structures.
- Renovations that involve structural framing.
- New or replacement decks or stairs.
- Replacement of windows or doors if the rough opening size is enlarged.
- Relocation or addition of plumbing fixtures.
- Replacement of interior water supply or drain pipes.
- Installation of photovoltaic (PV) panels mounted on buildings.
- Wind turbines that generate more than 3 kW of electricity.
- Greenhouses, if it is to be a permanent structure.
- Quonset huts and pre-engineered metal buildings, including shipping containers.
- Replacement of piers under buildings
- Swimming pools
- Hot tubs if being placed on a deck