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Tool · decks

Does my deck need a permit?

Three questions, a straight answer and the City’s own rule. It takes about ten seconds.

Attached to the house?
Roof or cover?
KitchenerPermit neededDivineDesigner

It’s more than 24 in (610 mm) above the ground.

  • 900 mm guard required (OBC 9.8.8)
  • Footings 1.2 m below grade, as the City deck guides show (OBC 9.12.2.2)
  • City permit fee: $95 flat fee
Source: City of Kitchener: When you need a building permit · checked 2026-10-06

Good to know

Does a low deck still have to meet the code?

Yes. No permit doesn’t mean no rules: guards, stairs and footings still have to meet the Ontario Building Code.

Why does an attached deck sometimes need a permit when it’s low?

Some cities treat anything attached to the house as part of the building. London, Brampton and Hamilton say so outright; Waterloo’s and Toronto’s pages leave room for doubt, so we tell you to confirm.

What if my yard slopes?

Measure from the ground at the highest point of the deck. A deck that’s 20 in up by the house can be 30 in up at the far edge.

Start with what you have.

A sentence, a photo or an old survey is enough. Try the real thing free, no account.