Basement Finishing Cost in Montreal (2026)
Average cost in Montreal
$48,000 — $135,000
$65 — $145 per sq ft
Cost Breakdown
ItemizedFraming, drywall, and painting
40%
Lumber, insulation, and drywall
30%
Certified sub-trades and fixtures
18%
Vinyl, laminate, and trim work
9%
Municipal fees and floor plans
3%
GST+QST at 14.98%
📋What's Included
ScopeTypically Includes
- Framing & drywall
- Basic flooring (LVP or carpet)
- Electrical (outlets & lighting)
- Egress window (if required)
- Painting
- Basic bathroom rough-in
Typically Excludes
- Full basement bathroom
- Built-in bar or kitchen
- Home theater wiring
- Waterproofing (separate cost)
- Permits & inspections
Assumes an unfinished basement with existing concrete floor and basic utilities.
🧮Estimate Your Cost
InteractiveEstimated Cost
$25,584 — $38,376
Based on 7 sources and market data for Montreal. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$75,036
Today
$78,187
Basement Finishing in Montreal is ↑ 4.2% compared to roughly a year ago — about $3,152 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top Basement Finish Contractors in Montreal
Verified providersRénovation Centrale , Central Renovation
1255 R. du Square-Phillips Ste 412, Montreal, QC H3B 3G1, Canada
238 reviews
Ecosense Construction et Renovation Inc. Montreal
645 Rue Guy, Montréal, QC H3J 2V5, Canada
63 reviews
DCR Renovation & Construction Montreal
3422 Bd Décarie, Montréal, QC H4A 3J5, Canada
591 reviews
T2 Renovations Inc.
1255 Chem. Legault #2, Saint-Lazare, QC J7T 2B7, Canada
66 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
The average cost ranges from $65 to $145 CAD per square foot, with most mid-range projects settling around $95 CAD per square foot.
In 2026, Montreal permit fees are generally calculated at approximately $9.80 per $1,000 of estimated construction value, plus a fixed administrative fee of roughly $155.
Adding a standard 3-piece bathroom typically increases the project cost by $16,000 to $24,000 CAD, depending on the proximity to existing plumbing stacks.
Homeowners can expect a return on investment of approximately 62% to 70% of the project cost upon resale, depending on the quality of the moisture proofing and ceiling height.
📊Our Methodology
How we collect dataAggregated from 7+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: 3 days ago. Updates run weekly. All costs in CAD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.