Projects that require building permits
Under the Ontario Building Code Act, a building permit is required for the construction of a new building, an addition, or alteration of any building or structure with a building area of over 10 square metres (approximately 108 square feet).
- A deckthat is
- adjacent to or attached to the house and its walking surface is more than 600 mm (24 in.) above the adjacent grade
- elevated and providing principal access to a building
http://ottawa.ca/en/residents/laws-...ting/what-projects-require-permits/projects-0
- independent from the house and has a walking surface greater than 10 square metres (approximately 108 square feet) in area and its walking surface is more than 600 mm (24 in.) above the adjacent grade