Basement Finish Cost in Washington
Basement Finish in Washington costs $45–$120 per sq ft in 2026. A typical 800 sq ft project averages $58,400. Washington is in the West region, where labor and materials run on the higher end of national pricing.
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How much does a basement finish cost in Washington? A basement finish in Washington costs $36,000–$96,000 in 2026, with most homeowners paying around $58,400 for a typical 800 sq ft project.
- Per sq ft
- $45–$120
- Typical range
- $36,000–$96,000
- Average
- $58,400
- Labor share
- 55%
Washington Average Cost (2026)
Cost Breakdown
Based on a 800 sq ft project in the West region. Actual costs vary by contractor, site conditions, and material choices.
Basement Finish Cost by Size in Washington
Washington pricing for common basement finish project sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 400 sq ft | $18,000 | $29,200 | $48,000 |
| 800 sq ft | $36,000 | $58,400 | $96,000 |
| 1,600 sq ft | $72,000 | $116,800 | $192,000 |
Based on $45–$120 per sq ft in the West region.
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Return on Investment
How much value does a basement finish add to your home at resale?
How Basement Finish compares to other projects
ROI figures based on Remodeling Magazine Cost vs. Value Report 2024, national averages. Actual resale value depends on your market, home price tier, and project quality.
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Frequently Asked Questions
How much does a basement finish cost in Washington?
In Washington, a typical 800 sq ft basement finish project costs between $36,000 and $96,000, with a mid-range average of $58,400. Washington is in the West region.
How much is labor for a basement finish in Washington?
Labor accounts for approximately $32,120 of the total cost for a 800 sq ft basement finish project in Washington. The West Coast and Mountain West have some of the highest labor costs in the country, driven by high cost of living and strong contractor demand.
How do I find a contractor for a basement finish in Washington?
Get at least 3 quotes from licensed local contractors, verify their license with Washington's contractor licensing board, and check reviews on Google or the BBB. Use our free estimate tool to understand fair pricing before you negotiate.
Does a basement finish add value to your home in Washington?
On average, a basement finish recoups about 71% of its cost at resale nationwide. For a $58,400 project in Washington, that's approximately $41,464 in added home value. Actual ROI varies by neighborhood and market conditions.
Basement Finish Material Calculators
Estimate exact material quantities and costs for your basement finish project.
Other Home Improvement Costs in Washington
Basement Finish Cost in Nearby States
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How big is your Basement Finish?
An average basement is 800–1,200 sq ft.
Pro Tips
- Get at least 3 contractor quotes
- Ask about permit requirements
- Budget 10–20% contingency
- Check contractor licenses
Find a Basement Finish Pro Near You
Get free quotes from top-rated local pros. No obligation.
Sponsored — BuildCost may earn a referral fee at no extra cost to you. This site connects you with independent service professionals through a third-party matching platform.
Ready to Hire a Basement Finish Contractor?
Use your estimate to get competitive bids from licensed local contractors. Getting multiple quotes is the best way to avoid overpaying.
Local contractor matching coming soon.