Basement Finishing Cost in Montreal (2026)
Average cost in Montreal
$15,000 – $175,000
$50 – $150 per sq ft
In Montreal, the average is $64,406 and most projects cost between $15,000 and $175,000, or about $50 – $150 per sq ft. Prices are before tax and based on 9 sources.
Cost Breakdown
ItemizedLicensed trades and general labor
40%
Drywall, flooring, insulation, and lumber
30%
Rough-ins and fixture installation
15%
Municipal fees and architectural plans
5%
Unexpected repairs and asbestos testing
10%
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 project
LiveYour estimate in Montreal
Likely range $28,983 – $141,693
- Labor40%$25,762
- Materials30%$19,322
- Plumbing & Electrical15%$9,661
- Permits & Design5%$3,220
- Contingency10%$6,441
Basic (rec room)
$44,804
Standard (bedroom + bath)
$64,406
Premium (full suite)
$91,849
Calibrated to 9 researched sources for Montreal. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$60,991
Today
$64,406
Basement Finishing in Montreal is ↑ 5.6% compared to roughly a year ago — about $3,415 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
246 reviews
DCR Renovation & Construction Montreal
3422 Bd Décarie, Montréal, QC H4A 3J5, Canada
591 reviews
Novostar: Asbestos Mold Removal and Renovation
1440 Rue Beaulac, Montréal, QC H4R 1R7, Canada
106 reviews
RénoAssistance
400 Blvd. De Maisonneuve Ouest O, Montreal, QC H3A 1L4, Canada
170 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
In Montreal, the cost for a residential renovation permit is approximately $9.80 per $1,000 of estimated work value, with a minimum fee of $164.20.
Adding a bathroom typically costs between $8,000 and $20,000. The price is higher if concrete must be cut for new plumbing lines, which can add $2,500 to $5,000 to the rough-in phase.
Homes built before 1990 often require asbestos testing for joint compounds and floor tiles. Remediation can add $3,000 to $10,000, while upgrading outdated electrical panels for a new suite costs between $2,000 and $5,000.
A legal secondary suite with a kitchen and separate entrance typically costs between $100 and $175 per square foot, totaling $100,000 to $175,000 for a standard 1,000 sq ft basement.
📊Our Methodology
How we collect dataAggregated from 5+ 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: 1 months 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.