Illinois · 2026 cost guide
How much does a new roof cost in Illinois?
In Illinois, a new roof costs about $9,700–$22,500 in 2026 for a 1,800 sq ft (about 20-square) asphalt-shingle roof, tear-off included — roughly $486–$1134 per square (100 sq ft). That’s about 8% above the U.S. average.
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Illinois cost breakdown
| Typical total (a 1) | $9,700–$22,500 |
| Per square (100 sq ft) | $486–$1134 |
| Metro areas (Chicago, Aurora, and Naperville) | up to ~$24,500 |
| Versus U.S. average | about 8% above average |
What’s different about Illinois
Illinois pairs harsh freeze-thaw winters with Chicago's strict permitting and unionized labor, raising costs in the metro relative to downstate.
- Snow load and ice dams call for ice-and-water shield and sturdier decking, pushing roof cost up.
- Permit fees and skilled-trade labor rates here run well above the national average — usually the single biggest cost driver.
Expect quotes toward the higher end in Illinois’s larger metros — Chicago, Aurora, and Naperville — where labor and permit costs run above the state average, and lower in rural areas.
How the cost is built
Roof cost scales with roof area (measured in 100 sq ft 'squares'), pitch, and material — asphalt shingles are the budget choice, while metal, tile, and slate run two to four times more. Steep or complex rooflines, multiple layers to tear off, and new decking or flashing all add to the total.
Resale value
A new asphalt-shingle roof recoups roughly 60% of its cost at resale, per the annual Remodeling Cost vs. Value report — and it's often what lets a home sell at all.
Frequently asked questions
How much does a new roof cost in Illinois?
In Illinois, a new roof costs about $9,700 to $22,500 in 2026 for a 1,800 sq ft (about 20-square) asphalt-shingle roof, tear-off included — roughly 486–1134 per square (100 sq ft). That's about 8% above the national average, reflecting local labor and material costs.
What affects the cost of a new roof in Illinois?
Illinois pairs harsh freeze-thaw winters with Chicago's strict permitting and unionized labor, raising costs in the metro relative to downstate. Snow load and ice dams call for ice-and-water shield and sturdier decking, pushing roof cost up.
How can I get an accurate roof replacement estimate for my home?
Use the free Roofing Square Calculator to plug in your real measurements and materials, then collect two or three local quotes to compare. Within Illinois, prices run higher in metros like Chicago, Aurora, and Naperville and lower in rural areas.
Roof replacement cost by city in Illinois
Roof replacement cost in nearby states
Keep planning
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Open calculator →Sources & method
The Illinois figure is the national installed-cost range scaled by a Illinois regional cost index (its construction costs run about 8% above the U.S. average), then adjusted for the local climate and code factors above. It’s a 2026 planning estimate, not a quote — get local bids before budgeting.
- Smart Cost Hub methodology — how our cost ranges and indices are built
- U.S. Bureau of Labor Statistics — Producer Price Index (construction materials)
- Roof Quotes Near Me — local Illinois contractor quote data