Typical roof replacement costs in Illinois (2026)
Estimated cost (architectural shingles — full replacement) for common projects in Illinois, next to the US average. Change any option in the calculator above to price your exact project.
| Project | Illinois range | Illinois typical | US typical |
|---|---|---|---|
| 3-tab asphalt shingles | $8,390 – $12,688 | $10,539 | $9,581 |
| Architectural shingles | $9,209 – $14,325 | $11,767 | $10,697 |
| Standing-seam metal | $20,259 – $33,561 | $26,910 | $24,464 |
| Corrugated metal | $13,097 – $21,282 | $17,190 | $15,627 |
What changes the price in Illinois
Illinois's climate: cold, windy winters with deep frost and hot, humid summers. These local factors matter most for roof replacement projects:
- Ice-and-water barrier is required at the eaves. Codes in snowy areas call for it to stop ice-dam leaks — every legitimate Illinois quote should include it.
- Roofing season runs about April–November. Shingles need warmth to seal, so winter jobs are harder to book and may cost more.
- Older homes often have two layers of shingles. Codes allow no more than two, so a re-roof on these homes means a full tear-off — pick "2 layers" in the calculator.
Labor, sales tax and permits in Illinois
- Labor and prices: Illinois's construction cost index is 1.10 — 10% above the US average, the 9th highest of the 50 states and DC. Prices in big metros (Chicago, Aurora, Naperville) usually run above the state average, and rural areas below it.
- Sales tax: 6.25% state rate plus local taxes (10.25% in Chicago). The estimates on this page don't include it.
- Building rules: Illinois follows local codes — most cities and villages adopt the IRC, while Chicago enforces its own Chicago Building Code. Permits and inspections are handled by your city or county, so confirm requirements with your local building department before you start.
Illinois vs. other large states
Replacing an architectural-shingle roof (50×30 ft house, 6/12 gable) — typical cost in the 10 most populous states:
| State | Typical cost | vs. US avg |
|---|---|---|
| North Carolina | $9,520 | -11% |
| Georgia | $9,734 | -9% |
| Texas | $9,841 | -8% |
| Florida | $10,162 | -5% |
| Ohio | $10,376 | -3% |
| Michigan | $10,697 | — |
| Pennsylvania | $11,018 | +3% |
| Illinois | $11,767 | +10% |
| New York | $12,836 | +20% |
| California | $13,050 | +22% |
See all 50 states on the main roof replacement cost calculator.
Frequently asked questions
How much does a roof replacement cost in Illinois?
Replacing an architectural-shingle roof (50×30 ft house, 6/12 gable) costs about $9,209–$14,325 in Illinois (typical $11,767), compared with $10,697 at the US average. Your exact price depends on size, materials and your contractor — use the calculator above for your own numbers.
Do I need a permit to replace a roof in Illinois?
In most Illinois cities and counties, yes. Permits and inspections are handled locally under local codes — most cities and villages adopt the IRC, while Chicago enforces its own Chicago Building Code. A licensed roofer normally pulls the permit for you.
Is a roof replacement cheaper in Illinois than in other states?
Illinois's construction cost index is 1.10, 10% above the US average and the 9th highest of the 50 states and DC. Among the 10 most populous states, Illinois ranks 8th cheapest for this project.
Does the estimate include sales tax?
No. Sales tax on materials in Illinois is 6.25% state rate plus local taxes (10.25% in Chicago). Contractors usually build it into their quotes, so compare quotes on the same basis.