Uncovered Residential Wood Decks
Unless there are other specific requirements (ie: Conservation Authority, site specific zoning, Greenbelt restrictions, etc), the following information shall apply to the construction of all uncovered residential wood decks:
A Building Permit is required for all decks which are more than 600 mm (2 ft.) above adjacent average grade and are attached to a building;
A Building Permit is required for all decks which are more than 600 mm (2 ft.) above average adjacent grade and are greater than 10 m² (107.64 sq.ft.) in area;
All footings are to be located on undisturbed soil, minimum 1.2m (4 ft) below finished grade. Both foundation and deck structure shall be designed in accordance with Division B Part 9 of the Ontario Building Code.
Your deck must comply with the Zoning by-law regulations even if a building permit is not required. Please visit the Zoning Information web page for more information.
Decks may also be subject to approval by heritage and conservation authority if applicable.