Basement Finishing Cost in Phoenix (2026)
Average cost in Phoenix
US$15,000 — US$55,000
US$25 — US$65 per sq ft
Cost Breakdown
ItemizedGeneral contractor and specialized trades
42%
Flooring, drywall, paint, and fixtures
38%
Moisture barriers and foundation prep
12%
City of Phoenix bundled permit fees
3%
HVAC extension and electrical upgrades
5%
Sales Tax at 5.6%
📋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
US$25,584 — US$38,376
Based on 9 sources and market data for Phoenix. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$35,028
Today
US$36,989
Basement Finishing in Phoenix is ↑ 5.6% compared to roughly a year ago — about US$1,962 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 Phoenix
Verified providersPhoenix Home Remodeling
6700 W Chicago St #1, Chandler, AZ 85226, USA
132 reviews
P. J. Hussey Construction
3855 W Glendale Ave #110, Phoenix, AZ 85051, USA
126 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
Phoenix uses a single bundled building permit that covers all trades (electrical, plumbing, mechanical). Fees are based on project value, typically ranging from $558 for small projects to over $906 for projects exceeding $25,000.
Yes, per building codes, any basement room used for sleeping must have an emergency escape and rescue opening. In Phoenix, installing an egress window typically costs between $2,700 and $5,900, including professional installation.
Homeowners in the Phoenix metro area can generally expect a 70% return on investment. A finished basement not only adds usable square footage but also increases resale value by approximately 8-12% if smart home features are integrated.
The intense desert heat makes HVAC extension and high-quality insulation critical. Extending a cooling system into the basement typically adds $3,000 to $5,000 to the budget, but it is essential for maintaining a livable temperature year-round.
📊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 weeks 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.