How much does it cost to build a garage in Quebec in 2026?
Building a detached single garage in Quebec usually costs $35,000 to $55,000 before taxes, and an insulated double garage $80,000 to $115,000. A turnkey attached garage costs more per square foot because it must tie into the house and meet fire-separation requirements. The level of interior finish can double the price.
Quebec price ranges in 2026
Quebec market estimates, updated October 2026, before taxes (GST and QST extra). These are not guaranteed prices: costs vary by region, building and materials, and only a written quote based on your project gives an actual price.
| Garage type | Price per sq ft | Typical budget |
|---|---|---|
| Carport | $85 – $120 | $15,000 – $30,000 |
| Detached single garage, uninsulated, on slab (12 × 20 to 14 × 24 ft) | $120 – $180 | $35,000 – $55,000 |
| Detached double garage, insulated, with electrical (22 × 24 ft) | $150 – $220 | $80,000 – $115,000 |
| Attached single garage, turnkey | $180 – $300 | $50,000 – $75,000 |
| Garage door replacement | — | $2,000 – $6,000 |
What drives the price
- Attached or detached: an attached garage needs a fire separation and a tie-in to the existing roof.
- The concrete slab and site prep, more expensive on clay soil or a slope.
- Insulation, heating and electrical, which turn a shelter into a year-round space.
- The garage door: insulated, motorized, glazed or custom.
- Matching the house: same siding and roofing type.
Mistakes to avoid
- Building too tight: leave room to open car doors and for storage.
- Forgetting to run electrical conduit before pouring the slab.
- Ignoring municipal rules on size and distance from property lines.
- Neglecting drainage around the slab, which encourages frost cracking.
How to get reliable quotes
- Provide the dimensions, door height and desired finish level (shell or turnkey).
- Have the slab thickness, under-slab insulation and reinforcement spelled out.
- Ask whether the permit, site plan certificate and electrician are included.
- Check that the contractor holds a valid RBQ licence for this type of work in the Régie du bâtiment du Québec registry.
- Insist on a detailed written quote and compare at least three quotes line by line, not just the total.
Estimate your budget, then get quotes
Use the PRONEK estimator to get a range for your project, then post your project for free: it is sent to verified RBQ contractors, and no payment is requested before signing.
Frequently asked questions
How much does a double garage cost in Quebec?
A detached, insulated double garage with electrical often costs $80,000 to $115,000 before taxes. An uninsulated version costs less.
Do I need a permit to build a garage?
Yes. The municipality sets the maximum size, height and required distance from property lines.
How long does it take to build a garage?
Usually 4 to 10 weeks, including curing time for the concrete slab.
Can a garage be converted into living space?
Often yes, with insulation, heating and sometimes a window. Check zoning and your city's parking requirements first.