Smaller jobs
$15,000 to $45,000
From 7 jobs.
The lowest quarter. Usually part of the basement, or framing, insulation, drywall and electrical only, with no new plumbing.
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What finishing a basement costs in the western suburbs
Real numbers from 27 recent basement finishes in the western suburbs, from framing and drywall only to full basements with a bathroom and wet bar, and what moves a job from the low end to the high end.
What homeowners paid
Most basement finishes
$45,000 to $122,000
Typical: about $67,000. From 27 jobs.
The middle half of all 27 jobs: framing, insulation, drywall, ceiling, lighting, flooring and trim, often with a bathroom, bedroom or wet bar.
Larger jobs
$122,000 to $195,000
From 7 jobs.
The top quarter. Usually the largest basements, finished end to end with bathrooms, wet bars and custom features.
Based on 27 basement remodels and finishes in the western suburbs between March 2025 and June 2026. Waterproofing-only jobs and jobs that also remodeled other floors are left out. Ranges are rounded and show what those homeowners paid, not a quote for your basement. Updated October 2026.
What moves the price
Size
Most of the cost scales with square feet of wall, ceiling and floor. Finishing only part of the basement is the simplest way to control it.
A bathroom or wet bar
Below-grade plumbing often means breaking the slab or adding an ejector pump, which adds more than the fixtures do.
Bedrooms and egress
A basement bedroom needs an egress window, which means cutting the foundation and digging a window well.
Water
Any sign of water has to be solved first. Drain tile, a sump or wall repairs come before framing, and they are priced separately.
Ceiling and mechanicals
Ducts, pipes and beams decide whether the ceiling is drywall or a drop ceiling, and how much has to be boxed in or moved.
Permits and inspections
Finishing a basement needs a village permit with drawings, plus framing, electrical, plumbing and insulation inspections.
Get a number for your basement
These ranges tell you what to expect. A written quote tells you what yours costs: the work, the materials and who does each part, with no work started until you approve it. More about our basement finishing · Permit guides
Questions
What does finishing a basement typically cost here?
About $67,000 across the 27 recent basement finishes we looked at, with most between $45,000 and $122,000.
Can I finish a basement for less?
Yes. The smaller jobs were usually framing, insulation, drywall and electrical only, with no bathroom, or only part of the basement.
Do I need a permit to finish a basement?
Yes, in every village we work in. Our permit guides explain what Woodridge, Naperville and Downers Grove require.
How do I get a real number for my basement?
Ask for a free written quote. Send photos or show us the space by video, and we will tell you what your basement would cost and what drives it.
Want a real number for your project?