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Drywall prices
HomeAdvisor lists drywall installation at $1.50–$3 per square foot, about $800 for a 400 sq ft basement and about $3,000 for 1,500 sq ft, with panels around $20 each. Trusscore's breakdown for a complete job (hang, tape, mud, sand, prime and paint) is $3.00–$5.50 per square foot.
| Board area | Hang $1.50–$3 | Full finish $3–$5.50 |
|---|---|---|
| 1000 sq ft | $1,500–$3,000 | $3,000–$5,500 |
| 1500 sq ft | $2,250–$4,500 | $4,500–$8,250 |
| 2000 sq ft | $3,000–$6,000 | $6,000–$11,000 |
| 2500 sq ft | $3,750–$7,500 | $7,500–$13,750 |
| 3000 sq ft | $4,500–$9,000 | $9,000–$16,500 |
How this estimate is built
The base number is area times a published cost per square foot. Block Renovation, a remodeling contractor, puts contractor-led basement finishes at $25–$40 per square foot for a basic finish, $40–$75 for mid-range and $75–$100 or more for high-end work in 2026. HomeAdvisor's national figure is lower, $7–$23 per square foot, because it also counts partly finished spaces and owner-managed projects. Use the HomeAdvisor range if you will act as your own general contractor or only need flooring, paint and lighting in an already dry, framed room.
Add-ons are priced separately because they do not scale with area. A bathroom costs about the same whether it sits in a 600 or a 1,600 square foot basement. Fixr lists half baths at $5,000–$15,000, three-quarter baths at $10,000–$22,000 and full baths at $15,000–$35,000. HomeGuide puts a cut-in egress window at $4,000–$12,000, most often $6,000–$8,000. HomeAdvisor lists permits at $1,200–$2,000.
When you pick a state, the calculator keeps 60% of the cost as is and scales the other 40% by local wages. This Old House notes that labor is usually about 40% of a basement finishing budget, and the wage index comes from the Bureau of Labor Statistics' May 2025 mean hourly wages for carpenters, electricians, plumbers and drywall installers.
Getting comparable bids
- Write a one-page scope: rooms, bathroom fixtures, number of egress windows, ceiling type and flooring.
- Ask each contractor to price the permit, the water fix and any electrical panel work as separate lines.
- Ask whether quotes include design, dumpster and final cleaning.
- Compare per-square-foot totals only after removing the bathroom and egress lines, which do not scale with area.
- Check the license, insurance and recent permits of each contractor with your building department.
The usual order of work
| Phase | Who | Notes |
|---|---|---|
| 1. Water and radon | Waterproofer, mitigator | Test radon and fix leaks before anything is covered |
| 2. Permit and plan | Owner, designer | Rooms, egress windows, bathroom location |
| 3. Egress and drains | Excavator, plumber | Cut windows and break slab for drains while the space is open |
| 4. Framing and insulation | Carpenter | Foam on the concrete, treated bottom plates, fire blocking |
| 5. Rough electrical, plumbing, HVAC | Licensed trades | Inspections before walls close |
| 6. Drywall and ceiling | Drywall crew | Leave access panels for valves and cleanouts |
| 7. Flooring, trim, paint, fixtures | Finish trades or owner | Final inspection |
Bathroom and egress costs land early, in phase 3, which is why they surprise people who budget only by the square foot.
Related calculators
Sources
- https://www.homeadvisor.com/cost/basements/
- https://trusscore.com/blog/the-cost-to-finish-a-basement-in-2024.html
- https://www.blockrenovation.com/guides/basement-remodel-cost-per-square-foot-2026