Basement Finishing Cost in Chicago, IL
Based on 200 basement finishing building permits filed in Chicago between 2015 and 2026, the typical declared project value is $50,000, with most landing between $25,000 and $72,930. These are real records from Chicago's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Basement Finishing values over time in Chicago
Median declared value moved from $40,000 in 2021 to $52,500 in 2026, up 31% over that span. Each year below is computed from the filings that actually cleared in Chicago.
Recent basement finishing permits in Chicago
Actual filings from Chicago's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-06-09 | $50,000 | COMPLETE INTERIOR REMODEL OF SINGLE FAMILY RESIDENCE INCLUDING INTERIOR FINISHES, MECHANIC |
| 2026-06-09 | $70,000 | RENOVATION PROJECT OF AN EXISTING VACANT, RESIDENTIAL 2-FAMILY DETACHED HOME, 2-STORY BUIL |
| 2026-06-03 | $46,960 | SPR 2019 CBRC: INTERIOR ALTERATIONS IN AN EXISTING UNFINISHED BASEMENT FOR NEW 1 DU AT AN |
| 2026-05-28 | $35,000 | SPR 2019 CBRC: EXISTING 2 STORY TWO DWELLING UNIT RESIDENCE TO BE DECONVERTED INTO A TWO S |
| 2026-05-19 | $55,000 | SPR 2019 CBRC: RENOVATED UNFINISHED BASEMENT: INSTALL NONBEARING PARITIONS & BATHROOM PER |
| 2026-04-13 | $70,000 | SPR 2019 CBRC - A COMPLETE INTERIOR REMODEL OF TWO UNIT RESIDENTIAL BUILDING INCLUDING MEC |
| 2026-04-02 | $10,000 | SPR 2019 CBRC: INTERIOR REMODEL FOR EXISTING 3-STORY, TYPE IIIA MASONRY, 38' HT., 3-UNIT R |
| 2026-04-01 | $70,000 | INTERIOR REPAIR OF AN EXISTING 2-STORY 2 UNIT RESIDENTIAL MASONRY CONSTRUCTION WITH FINISH |
| 2026-03-31 | $25,000 | SPR 2019 CBC: REVISION TO PERMIT #101062088: CHANGE ROOF TRUSSES, REDESIGN OF REAR PORCH, |
| 2026-03-27 | $50,000 | SPR 2019 CBRC - INTERIOR RENOVATION TO 12 EXISTING BRICK DWELLING UNIT WITH UNFINISHED BAS |
| 2026-03-25 | $25,000 | SCOPE: NONSTRUCTURAL INTERIOR ALTERATION OF SFR, FINISH OPEN BASEMENT WITH MECHANICAL ROOM |
| 2026-02-10 | $97,000 | SPR 2019 CBRC: INTERIOR REMODEL TO EXISTING 2-STORY SINGLE-FAMILY RESIDENCE WITH BASEMENT |
| 2026-02-09 | $75,000 | SPR 2019 CBRCINTERIOR REMOVE AND REPLACE IN KIND REMODEL OF EXISTING TWO-FAMILY RESIDENCE. |
| 2026-01-16 | $85,000 | SELF CERT CBC 2019 - NEW REAR WOOD PORCH, FINISH BASEMENT AND MINOR INTERIOR ALTERATIONS T |
| 2025-11-25 | $86,000 | SPR 2019 CBRC: FINISH THE EXISTING UNFINISHED BASEMENT, ADD FULL BATHROOM IN BASEMENT AND |
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Add your price →How to read these numbers
A permit's declared value is the job cost the owner or contractor stated when they pulled the permit. It tracks the real cost of the work but can run a bit under what was actually paid, since it often leaves out some labor and finish costs. Treat the range as a grounded starting point. What basement finishing actually costs in Chicago comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from Chicago's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a Chicago homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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