Basement Finish Cost in Illinois
Basement Finish in Illinois costs $33–$95 per sq ft in 2026. A typical 800 sq ft project averages $36,800. Illinois is in the Midwest region, where labor and materials run on the average end of national pricing.
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How much does a basement finish cost in Illinois? A basement finish in Illinois costs $26,400–$76,000 in 2026, with most homeowners paying around $36,800 for a typical 800 sq ft project.
An average basement is 800–1,200 sq ft.
- Per sq ft
- $33–$95
- Typical range
- $26,400–$76,000
- Average
- $36,800
- Labor share
- 48%
Illinois Average Cost (2026)
Cost Breakdown
Based on a 800 sq ft project in the Midwest region. Actual costs vary by contractor, site conditions, and material choices.
Basement Finish Cost by Size in Illinois
400 sq ft, 800 sq ft, and 1,600 sq ft basement finish cost in Illinois — the most common sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 400 sq ft | $13,200 | $18,400 | $38,000 |
| 800 sq ft | $26,400 | $36,800 | $76,000 |
| 1,600 sq ft | $52,800 | $73,600 | $152,000 |
Based on $33–$95 per sq ft in the Midwest region. An average basement is 800–1,200 sq ft.
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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 Illinois?
In Illinois, a typical 800 sq ft basement finish project costs between $26,400 and $76,000, with a mid-range average of $36,800. Illinois is in the Midwest region.
How much is labor for a basement finish in Illinois?
Labor accounts for approximately $17,664 of the total cost for a 800 sq ft basement finish project in Illinois. The Midwest offers near-average labor costs with competitive contractor markets in most metro areas.
How do I find a contractor for a basement finish in Illinois?
Get at least 3 quotes from local contractors. Licensing rules vary by state — some license general contractors statewide, others license only trades like plumbing and electrical and leave the rest to cities and counties — so ask each contractor which licenses Illinois and your city require for this job, verify any license number with the agency that issued it, confirm their insurance, 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 Illinois?
On average, a basement finish recoups about 71% of its cost at resale nationwide. For a $36,800 project in Illinois, that's approximately $26,128 in added home value. Actual ROI varies by neighborhood and market conditions.
Basement Finish Cost by Illinois City
Local pricing, permit notes, and climate factors for major Illinois metros.
Basement Finish Calculators
Estimate exact costs and material quantities for your basement finish project.
Other Home Improvement Costs in Illinois
Basement Finish Cost in Nearby States
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
Basement Finish Cost by State
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