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Building a Deck

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.






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