Basement Finishing Cost in Portland (2026)
Average cost in Portland
$15,810 – $335,000
$25 – $400 per sq ft
In Portland, the average is $88,553 and most projects cost between $15,810 and $335,000, or about $25 – $400 per sq ft. Prices are before tax and based on 9 sources.
Cost Breakdown
ItemizedSkilled trades and general labor
50%
Drywall, flooring, and fixtures
40%
City of Portland structural and trade permits
2%
Plans and engineering for older homes
8%
None at 0%
📋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 Portland
Likely range $39,849 – $194,817
- Labor50%$44,277
- Materials40%$35,421
- Permits & Fees2%$1,771
- Design & Architectural8%$7,084
Basic (rec room)
$61,602
Standard (bedroom + bath)
$88,553
Premium (full suite)
$126,284
Calibrated to 9 researched sources for Portland. Before tax. Real quotes vary with site conditions.
📈Price Momentum
Year-over-year~1 year ago
$83,857
Today
$88,553
Basement Finishing in Portland is ↑ 5.6% compared to roughly a year ago — about $4,696 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 Portland
Verified providersElite Team Builders Inc
555 SE Martin Luther King Jr Blvd Suite 105, Portland, OR 97214, USA
46 reviews
Catalyst Construction & Kitchen Remodeling
825 NE 20th Ave A, Portland, OR 97232, USA
60 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
Yes, Portland Permitting & Development requires a building permit for any conversion of a basement to habitable space. Permit fees typically range from $1,200 to $2,000, but can be higher for complex projects involving structural changes.
The Portland building code requires a minimum ceiling height of 7 feet for habitable spaces. Many older Portland homes have lower ceilings, which may require 'digging out' or bench underpinning, significantly increasing costs.
A code-compliant egress window typically costs between $3,000 and $6,000 in Portland. This includes the window, excavation for the window well, and professional installation to meet Oregon Residential Specialty Code Section R310.
Costs in Portland are driven by a high demand for skilled labor, strict local building codes (especially for seismic and moisture management), and the prevalence of older homes that require structural reinforcement or radon mitigation ($800–$1,500).
📊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 USD.
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.