Can I build a deck without a permit in Ontario?

The OBC sets how decks must be built; municipalities decide when permits are required. Height above grade, attachment to the house, and guard requirements usually trigger permits.

Low floating platforms far from the house may be exempt in some areas, but zoning setbacks and utility clearances still apply.

Permit drawings should show footings, framing, guards, stairs, and ledger connections. Inspections occur at footing and final stages in most jurisdictions.