Do You Need a Deck Permit in Calgary?

Millennium Fence and Deck · Updated October 2026 · 4 min read

Yes, in most cases. The City of Calgary requires a building permit for any deck with a roof or pergola over it, and for any uncovered deck whose surface sits higher than 0.6 m (2 ft) above grade at any point. An uncovered deck at or below 2 feet needs no building permit. Some decks need a development permit as well, depending on where they sit on the lot.

That's the short answer. The detail below is what decides which category you're in.

When you need a building permit

A building permit is required if any of these apply:

• The deck has a roof or pergola over it. Height is irrelevant here. A ground-level deck with a pergola still needs a permit.
• The deck surface is higher than 0.6 m (2 ft) above grade at any point. Note at any point — Calgary lots slope. A deck that's 18 inches up at the house and 30 inches at the far corner is over the threshold.
• You're rebuilding, extending, or adding stairs to an existing uncovered deck that's already higher than 0.6 m.

If your deck is uncovered and stays at or under 0.6 m the whole way round, you don't need a building permit.

When you also need a development permit

A development permit is a separate approval, and it's about where the deck sits rather than how it's built. You need one if the deck is:

• at the front of the home
• closer than 1.2 m to a side property line
• closer than 6 m to a rear property line
• within a floodway, or within 6 m of one

This is the one that catches people out. A perfectly ordinary deck can trigger a development permit purely because of the setback, and a development permit is slower and more expensive than a building permit.

Height limits

Separate from whether you need a permit, there's a cap on how high the deck can be:

The walkout case is an exception to the 1.5 m cap, not a separate allowance — it is the only situation in a developed area where a deck may go higher, and it is still capped.

Go past these and you're into a relaxation application, which is a longer process again.

What it costs

As of September 2026, straight from the City:

Fees change. Check the City of Calgary's deck permit page for the current figures before you budget.

Against the build itself these are small — a deck in Calgary runs $28 to $58 per square foot installed, which we break down by size and material in how much a deck costs in Calgary. But permits are real money and they're not always included in a quote. Ask.

What you have to submit

• A completed requirements checklist
• A site plan showing the deck's position and setbacks
• Deck drawings — plan and cross-section, or the City's worksheet
• The application form, if you're applying in person

The site plan is the part most homeowners don't have. It has to show the deck's distance to each property line accurately, because that's what determines whether the development permit is triggered.

What happens if you skip it

Building without a permit doesn't usually surface immediately. It surfaces when you sell.

An unpermitted structure shows up in a real estate transaction, and the buyer's lawyer will want it resolved before closing. At that point you're applying for a permit retroactively on a deck that may not meet current code, with a closing date pressing. Retroactive approvals are harder than getting it right the first time, and the fix can mean rebuilding parts of it.

The permit also means an inspector has confirmed your footings, framing and guards are sound. On a raised deck that's not a formality — it's the difference between a structure that holds and one that doesn't.

How we handle it

We pull the permits on every deck we build, and we do the site plan and drawings as part of the job. You don't chase the City; we do.

Where it's worth talking early is the setback question. If your deck is going anywhere near a property line, the difference between needing a development permit and not needing one is sometimes a few inches of design change — and that's a conversation to have before the drawings are done, not after.

See deck installation in Calgary for how we build, or pergolas if you're adding a roof to an existing deck — that triggers a permit on its own, whatever height the deck is.