Basement finishing cost in Montréal, QC (2026)
Estimated range · ~800 sq ft, mid-range · before GST/HST
Cost range
| Tier | Estimated cost |
|---|---|
| Budget | $29,350 |
| Typical (midpoint) | $44,000 |
| Premium | $58,650 |
Modeled range, not a quote. City factor 1.048 (above the national baseline). How we calculate this.
What drives the price
- Size and scope of the job
- Material grade
- Access and site conditions
- Permits, disposal and seasonal demand
Montréal notes
QC construction workers averaged $38.08/hr in 2025 (StatCan Table 14-10-0064-01), 101% of the Canadian average. The StatCan construction price index for Montréal, Quebec stood at 114.8 in April 2026 (2023=100). Check Montréal permit requirements before starting.
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FAQ
How much does basement finishing cost in Montréal?
Our modeled estimate for ~800 sq ft, mid-range in Montréal, QC is $29,350–$58,650 before tax.
Why is Montréal above the national average?
Local construction wages in QC (StatCan LFS) and the construction price index for Montréal, Quebec (StatCan BCPI, 114.8) give a city factor of 1.048.
Are these quotes?
No. They are modeled ranges for planning. Get at least 3 written quotes from licensed local contractors.
Basement finishing cost in other cities
Toronto · Vancouver · Calgary · Edmonton · Ottawa · Winnipeg · Québec City · Hamilton
Other projects in Montréal
Roof replacement · Furnace replacement · Hot water tank replacement · Window replacement · Deck building · Fence installation · Bathroom renovation · Siding replacement · Driveway paving