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24×24 Detached Garage Cost in Illinois (2026)

A 24×24 detached garage in Illinois costs about $34,886 turnkey in 2026 ($60.57 per sq. ft.). Here's the itemized breakdown of materials, site prep and labor, using local crew rates.

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Materials Package
$14,441
Studs, trusses, sheathing, shingles, siding & doors
= Rows 3–7 below, materials only
Slab & Site Prep
$5,617
Grading, thickened-edge footing & concrete floor
= Rows 1–2 below, installed price
Turnkey Installed Total
$34,886
$60.57 per sq. ft.
Complete garage built by a local licensed crew
= All rows below, installed price
A fair bid from a local builder in Illinois should land between $32,095 and $38,375. Get 3 quotes, and if one is far outside this range, ask why.

Estimate only. Actual prices vary. No guarantee or warranty. Use as a guide only. Read the full disclaimer

Itemized cost breakdown

#ItemQuantityMaterialsLaborInstalled
1Site grading & padClear, level & compact the building pad784 sq ft$325$511$1,003
24" slab with thickened-edge footing3,000 PSI concrete, rebar, vapor barrier, forms11.4 cu yd$2,307$1,538$4,614
32×6 wall framing & sheathing96 studs, treated plates, headers, 7/16" OSB96 studs + 30 sheets$1,675$2,394$4,883
4Roof trusses & roof sheathing13 trusses at 24" on center, 6/12 pitch, OSB decking13 trusses + 24 sheets$2,476$1,200$4,411
5Architectural shingles & lap siding30-yr shingles, synthetic underlayment, engineered-wood lap siding & trim7.6 squares + 936 sq ft$4,354$3,113$8,960
6Garage & entry doorsDetails in the spec sheet🔒 Included in $19 spec sheet$4,745$1,069$6,977
7Basic electricalDetails in the spec sheet🔒 Included in $19 spec sheet$1,191$1,069$2,712
8Permit, nails/hardware & dumpsterDetails in the spec sheet🔒 Included in $19 spec sheet$1,105$0$1,326
Turnkey total$18,178$10,894$34,886
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Prices use 2026 material costs and typical local crew rates. Site work, custom options and material price swings can move your final price.

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Builder Spec Sheet & Shopping List

The same line items as this page in an editable Excel file and a PDF, each with a short spec, quantity, materials, labor and installed price. Plus a permit and site-prep checklist and a sheet for comparing 3 builder bids. 30-day money-back guarantee.

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Common questions

How much does a 24×24 Detached Garage cost in Illinois?

About $34,886 fully built by a local crew in 2026, or roughly $14,441 for the materials kit alone. Most fair bids land between $32,095 and $38,375.

What drives the price up or down?

Site prep (slope, soil, driveway access), floor choice, doors and insulation, and local labor rates. Lumber and steel prices also move a few percent a year.

Do I need a permit?

Most counties require a building permit for structures over 200 sq ft. Call your county building department with your size and location before you order materials.

How do I make sure I'm getting a fair quote?

Get at least 3 itemized bids for the same spec. Compare them line by line against this breakdown and ask about anything far above or below it.

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