Concrete Slab costs $6.90 to $13.81 per sq ft in Chicago in 2026. For a 400 sq ft project, expect $2,762 – $5,523 installed, typically near $4,142. That is about 2% above the Illinois average.
Chicago concrete slab calculator
Planning estimate. Wage index applies to the labor share only; materials held at national prices. Get three written quotes.
Why Chicago runs above the Illinois average
Construction wages in Chicago average $40.87 per hour against $39.27 statewide, so labor-heavy work prices above the Illinois norm here.
Labor is about 50% of the installed cost on this type of work, and it is the part that actually moves between markets. Materials are priced by national manufacturers and barely shift, which is why the gap between metros is narrower than wage differences alone suggest.
Concrete Slab cost by project size in Chicago
| Project size | Chicago range | Typical |
|---|---|---|
| 100 sq ft | $690 – $1,381 | $1,036 |
| 200 sq ft | $1,381 – $2,762 | $2,071 |
| 300 sq ft | $2,071 – $4,142 | $3,107 |
| 400 sq ft | $2,762 – $5,523 | $4,142 |
| 600 sq ft | $4,142 – $8,285 | $6,213 |
| 800 sq ft | $5,523 – $11,046 | $8,285 |
| 1,000 sq ft | $6,904 – $13,808 | $10,356 |
| 1,500 sq ft | $10,356 – $20,711 | $15,533 |
Where the money goes
For a 400 sq ft project in Chicago at roughly $4,142, a typical bill splits like this:
| Line item | Share | Cost |
|---|---|---|
| Labor | 50% | $2,071 |
| Materials | 36% | $1,491 |
| Site prep & equipment | 8% | $331 |
| Overhead, disposal & finishing | 6% | $249 |
Chicago compared with other Illinois markets
| Area | Cost per sq ft | vs Chicago |
|---|---|---|
| Peoria | $6.51 – $13.02 | −6% |
| Rockford | $6.56 – $13.13 | −5% |
| Champaign | $6.54 – $13.09 | −5% |
| Springfield | $6.48 – $12.96 | −6% |
| Illinois average | $6.75 – $13.50 | −2% |
Ground conditions and code in Chicago
Permits in Chicago
A residential permit for this work typically runs around $600 in Illinois. Permit cost is rarely included in a contractor quote, so budget it separately and confirm scope with the Chicago building department before work begins.
Hiring in Chicago
Get three written, itemised quotes from licensed and insured contractors, each specifying the same scope and grade of material. Ask for local references and check the licence is current in Illinois.
Frequently asked questions
How much does concrete slab cost in Chicago?
In 2026, concrete slab costs $6.90 to $13.81 per sq ft in Chicago. For a 400 sq ft project, the installed total typically lands between $2,762 and $5,523.
Is Chicago more expensive than the rest of Illinois?
Yes. Chicago runs about 2% above the Illinois average, because local construction wages ($40.87/hr) sit above the statewide figure of $39.27/hr.
Do I need a permit in Chicago?
Most work of this type and value requires a permit. Budget around $600 in Illinois and allow extra time for review in metro jurisdictions.
How do I compare quotes in Chicago?
Get three written, itemised quotes covering identical scope and materials. A bid far below the others usually signals a reduced specification rather than better value.
Nearby markets
Open the full concrete slab calculator →