Basement Finishing Cost in St. John's (2026)
Average cost in St. John's
$32,000 — $108,000
$32 — $108 per sq ft
Cost Breakdown
ItemizedSkilled trades (carpentry, drywall, painting)
40%
Lumber, drywall, flooring, and insulation
30%
Wiring, lighting, and rough-in for bathrooms
15%
Trim, doors, and bathroom fixtures
10%
City of St. John's building permits and plans
5%
HST at 15%
📋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
$24,576 — $36,864
Based on 9 sources and market data for St. John's. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
$55,927
Today
$59,059
Basement Finishing in St. John's is ↑ 5.6% compared to roughly a year ago — about $3,132 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 St. John's
Verified providersWise Cracks NL
155 Torbay Rd Ste 51024, St. John's, NL A1A 5G6, Canada
160 reviews
Reshape Consulting Inc.
50 Pippy Pl #12, St. John's, NL A1B 4H7, Canada
29 reviews
DEHTEROV Services - Renovations and Design
44a Lady Anderson Street, St. John's, NL A1B 0G8, Canada
15 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 is approximately $59 per square foot, with budget projects starting at $32 and premium finishes reaching $108 per square foot.
Adding a new 3-piece bathroom typically adds between $10,000 and $25,000 to the total project cost, depending on the proximity to existing plumbing stacks.
Yes, the City of St. John's requires a building permit for any project that creates a new living space or involves structural, electrical, or plumbing changes. Permit fees generally range from $500 to $2,000 depending on the project value.
Homeowners in St. John's can expect a return on investment (ROI) of approximately 70% to 75% upon resale, though this can exceed 100% if the space is converted into a legal rental suite.
📊Our Methodology
How we collect dataAggregated from 9+ 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 weeks 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.