Basement Finishing Cost Calculator
Sq ft × $/sq ft plus bathroom/egress add-ons and contingency. Click any i for detail.
Scope
Finished area (sq ft)
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Area
Area you plan to finish. |
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Cost per sq ft ($)
i
$/sqft
Budget/mid/premium defaults ~$30/$50/$80. |
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Add bathroom ($)
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Bath
Flat add-on; 0 if none. |
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Egress window ($)
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Egress
Code egress add-on. |
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Contingency (%)
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Contingency
Hidden moisture/framing surprises. |
How to use this calculator
- Enter finished square footage.
- Set a $/sq ft finish level.
- Add bathroom and egress allowances.
- Apply contingency and read the total.
Results explained
Finished basement budgets are often sketched as area × finish tier, plus wet rooms and egress. Moisture remediation, ceiling height, and permits can swing totals — contingency exists for a reason.
Quick reference: basement finish
base = sqft×$/sqft + bath + egress; total = base×(1+c%).
| Item | Detail |
|---|---|
| Budget tier | ~$30/sq ft |
| Mid tier | ~$50/sq ft |
| Premium | ~$80/sq ft |
| Bathroom | Often a five-figure add |
Regional pricing varies — get contractor bids.
How the estimate is built
base = sqft×psf + bath + egress; total = base×(1+cont%/100).
Example scenario
800 sq ft @ $50 + bath + egress + 15% → ≈ $63,825.
FAQ
Unfinished ceiling?
Lower $/sq ft — adjust the rate.
Waterproofing first?
Often required before finish — add separately if needed.
DIY labor?
Zero labor in your head-cost but keep materials realistic.
See garage conversion?
Similar remodel-cost pattern.