Detached Garage Construction Cost in Chicago, IL
Based on 929 detached garage construction building permits filed in Chicago between 2015 and 2026, the typical declared project value is $19,855, with most landing between $13,225 and $35,410. These are real records from Chicago's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Detached Garage Construction values over time in Chicago
Median declared value moved from $20,000 in 2021 to $17,800 in 2026, down 11% over that span. Each year below is computed from the filings that actually cleared in Chicago.
Recent detached garage construction permits in Chicago
Actual filings from Chicago's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-06-04 | $30,000 | 2019 CBRC: NEW 3 CAR MASONRY DETACHED GARAGE (OCCUPANCY GROUP R5; TYPE IIIA CONSTRUCTION) |
| 2026-05-20 | $45,000 | SPR 2019 CBRC - INTERIOR AND EXTERIOR RENOVATIONS TO AN EXISTING 2 STORY 4 DWELLING UNIT R |
| 2026-05-12 | $75,000 | SPR 2019 CBRC: COMPLETE INTERIOR REMODEL OF EXISTING TWO-FAMILY RESIDENCE INCLUDING MECHAN |
| 2026-05-12 | $12,000 | ADDITION OF 3RD CAR BAY TO EXISTING DETACHED GARAGE. |
| 2026-05-11 | $8,500 | SCOPE: WRECK AND REMOVE REAR 1 STORY FRAME 2 CAR DETACHED GARAGE (NO REPLACEMENT). LOCATIO |
| 2026-04-22 | $60,000 | SC 2019 CBC; EXISTING 2 STORY BRICK 2 FLAT WITH FULL BASEMENT. DUPLEX 1ST FLOOR UNIT WITH |
| 2026-04-13 | $8,239 | LINE VOLTAGE ELECTRICAL WORK. ADD 1 CIRCUITS TO EXISTING 100 AMP SERVICE DISCONNECTING MEA |
| 2026-03-18 | $15,000 | SPR 2019 CBRC: REVISION TO PERMIT # 101068541. DEMOLISH EXISTING ENCLOSED REAR PORCH AND D |
| 2026-03-12 | $45,000 | SC 2019 CBC: REVISION TO PERMIT #10107003. CHANGES TO DETACHED GARAGE DESIGN. |
| 2026-03-05 | $10,000 | WRECK AND REMOVE FRAME DETACHED GARAGE. LOCATIONS: 1 RESIDENTIAL UNIT(S), 0 NON-RESIDENTIA |
| 2026-01-05 | $15,600 | WRECK AND REMOVE FRAME DETACHED GARAGE. NO REPLACEMENT, NO OTHER WORK. LOCATIONS: 1 RESIDE |
| 2026-01-05 | $20,000 | WRECK AND REMOVE FRAME DETACHED GARAGE, NO REPLACEMENT. LOCATIONS: 0 RESIDENTIAL UNIT(S), |
| 2025-12-08 | $65,000 | SPR 2019 CBRC: A NEW NON-STANDARD R-3 DETACHED GARAGE ON AN RS-3 LOT CONTAINING AN R-3 SIN |
| 2025-11-28 | $26,000 | LOW VOLTAGE/COMMUNICATION ELECTRICAL WORK. INSTALL OTHER. SPECIFIC LOCATION: BASEMENT, EXT |
| 2025-11-21 | $80,000 | SPR 2019 CBRC: NEW MASONRY DETACHED GARAGE WITH NEW STEEL STAIR TO ROOF TOP DECK TO REPLAC |
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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 detached garage construction 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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