Detached Garage Cost in Calgary (2026 Guide)

A detached garage is one of the most practical things you can build on a Calgary lot — it gets your vehicles out of the snow, adds workshop and storage space, and almost always pays you back at resale. But the price swings widely depending on size, how you finish it, and what your lot and the City require. Here's an honest, contractor's-eye breakdown of what a detached garage actually costs to build in Calgary in 2026.

The Short Answer

For a standard wood-framed detached garage built to current Alberta code, expect to pay somewhere in these typical Calgary ranges in 2026:

• Single garage (roughly 14' x 22'): $35,000–$55,000
• Double garage (roughly 22' x 22' to 24' x 24'): $55,000–$90,000
• Oversized / triple or tall-door garage (26'+ wide or extra ceiling height): $90,000–$140,000+

Those are turnkey ranges for a finished, code-compliant build on a reasonably flat lot — concrete slab, framing, roofing, siding, an insulated overhead door, basic electrical, and the City permit. They are typical market ranges, not fixed PCND prices. The real number depends on your lot, your finishes, and your scope — which is exactly why the quote we give you is free and exact, not a guess off a chart.

What You Get at Each Size

Single garage. Fits one vehicle plus a bit of storage along the walls. This is the budget option, common on narrow inner-city lots in neighbourhoods like Killarney, Renfrew, or Bridgeland. You won't have room for a workshop, but you'll keep one car off the street and out of the freeze-thaw.

Double garage. The Calgary default. Two vehicles side by side, or one vehicle plus a real workbench and storage. A 24' x 24' is the sweet spot for most suburban lots in Airdrie, Chestermere, or the newer southeast communities — enough room to open both car doors comfortably and still walk around.

Oversized garage. This covers anything beyond the standard double — a third bay, a deeper footprint for a truck or trailer, or taller walls and a higher overhead door for a lift or RV. The cost jumps here because you're into bigger footings, more material, and often an engineered roof.

Calgary Detached Garage Cost by Size (2026)

Garage type	Approx. size	Typical Calgary range	Best for
Single	14' x 22'	$35,000–$55,000	One vehicle, narrow lots
Double	22' x 22' to 24' x 24'	$55,000–$90,000	Two vehicles + storage
Oversized / triple	26'+ wide or tall-door	$90,000–$140,000+	Trucks, trailers, workshop, lift
Garage with suite above	Double footprint + 2nd storey	$200,000–$350,000+	Rental income, multi-gen living

The Big Cost Drivers

The concrete slab and footings. Calgary's clay soil and freeze-thaw cycles mean the foundation has to be built to handle ground movement. For a standard detached garage (under 55 m²), Alberta Building Code allows a properly built floating slab on grade — a slab designed to move with the ground rather than footings driven below the frost line. Larger or taller garages, masonry construction, or a garage with a suite above can need a deeper, frost-protected or engineered foundation. A standard double-garage slab with the right footings usually runs $9,000–$18,000 of the total. If your lot slopes or needs significant fill and compaction, that climbs.

Slab-on-grade vs. heated slab. A basic insulated slab keeps the floor from heaving. If you want in-floor heat (radiant tubing in the slab), budget an extra $6,000–$12,000 for the tubing, manifold, and boiler or hot-water source. It's the most comfortable way to heat a Calgary garage in January, but it has to be planned before the concrete is poured — you can't add it later without tearing out the floor.

Heating and insulation. An unheated, uninsulated shell is the cheapest build. Insulating and drywalling the walls and ceiling adds roughly $6,000–$15,000 for a double, and a forced-air or radiant tube heater adds $2,500–$6,000. For most Calgary homeowners who actually want to use the space in winter, insulation plus a hung heater is the practical middle ground.

Electrical. A basic garage circuit is inexpensive, but if you want a 240V outlet for tools or an EV charger, a sub-panel, or extra lighting, expect $2,000–$6,000. Any electrical work needs its own permit and inspection.

Finishes. Matching your home's siding, adding extra windows, a man door, upgraded overhead doors, or a higher roof pitch with shingles to match the house all add up. This is where a $60,000 garage becomes a $75,000 garage without changing the size at all.

Permits, Setbacks, and Development Rules

You cannot legally build a detached garage in Calgary without the right approvals, and any contractor who tells you otherwise is one to walk away from. Here's what's involved:

Building permit

A building permit is required for essentially every detached garage. The permit covers structural, and there are usually separate electrical and (if you're heating it) gas permits. Building permit fees depend on size — roughly $334 for a garage under 400 sq ft, and about $1,300 for a larger garage over 400 sq ft (which covers most double garages) per the City of Calgary 2026 fee schedule, with separate electrical and gas permits on top, with electrical and gas permits on top. We pull these permits for you and book the inspections as part of the job.

Development permit and setbacks

This is the part homeowners trip over. Whether you need a development permit (separate from the building permit) depends on your lot's zoning and whether your garage fits the standard rules for size, height, and how far it sits from property lines. The City of Calgary sets minimum setbacks from rear and side property lines, maximum site coverage, and height limits. If your design stays inside those rules, you may qualify for a faster permitted process. Go over the size or height limits, or build closer to the line than allowed, and you're into a discretionary development permit with neighbour notification — which adds weeks and sometimes a relaxation application.

Corner lots, lots backing onto a lane, and lots with existing structures all have their own quirks. The practical takeaway: design the garage to fit the rules from day one, and confirm setbacks before you fall in love with a footprint. We sort this out before a single board is cut.

Garage Suites and Backyard Suites

Calgary has made it much easier to add a suite above or beside a detached garage, and demand has climbed as homeowners look for rental income or space for family. A garage with a legal suite above it is a different animal from a plain garage — you're now building a second dwelling, which means engineered floors, full insulation and vapour barrier, plumbing, a separate electrical service, fire separation, egress, and a more involved development permit.

Realistically, a detached double garage with a one-bedroom suite above typically runs $200,000–$350,000+ in Calgary depending on finishes and servicing. It's a major project, but the rent or the flexibility can make the math work over time. If a suite is on your radar, plan it from the start — retrofitting a suite onto a garage that wasn't designed for it is far more expensive than building it in once.

How to Keep the Cost Honest

When you compare free garage quotes, make sure you're comparing the same scope. A quote that excludes the permit, the proper footings, or the overhead door isn't cheaper — it's incomplete. Ask specifically what's included: slab and footing detail, insulation, door spec, electrical, permit fees, and final grading and cleanup. The cheapest number on paper is often the most expensive garage once the change orders land.

The smart savings come from decisions made early: keeping the footprint inside the permitted setback rules, choosing a standard door size, and deciding up front whether you want a heated slab so it only gets poured once. None of those involve cutting corners — they just avoid paying twice.

The Bottom Line

For most Calgary homeowners, a finished detached double garage built to code lands somewhere in the $55,000–$90,000 range in 2026, with singles below that and oversized or heated builds above. The slab, the permits, and the heating decisions are what move the number — so the size on the chart only tells part of the story.

Precision Construction & Decora has been a family-owned Calgary builder since 1968, serving the city since 1997. We handle detached garage construction end to end — confirming setbacks, pulling the building and electrical permits, pouring proper footings for our soil, and framing it plumb and square so it passes inspection the first time. We back every job with a fixed-scope quote and our 5% price-beat guarantee. If you're ready to put a real number to your garage, request a free garage quote and we'll come take a look at your lot.