Roofers in Chicago: 2026 Roof Costs, Illinois Licenses and City Permit Rules

What a roof costs in Chicago

We take national roofing prices and apply Chicago's construction cost factor of 1.2 from the U.S. Army Corps of Engineers Area Cost Factors. A roof that costs $10,000 in an average market comes to about $12,000 here.

Estimates for 2026, including labor and standard parts. Chicago prices use the metro's construction cost factor of 1.20 (US average = 1.00) from the U.S. Army Corps of Engineers Area Cost Factors. Your quote depends on access, materials and the condition of the home.

Angi's local data gives a second view. It reports an average Chicago roof replacement of $10,185, with most between $6,049 and $14,515 (Angi). Flat roofs cost more per square foot: an average of $12,067 per job, most between $5,681 and $19,269, or roughly $10 to $20 per square foot (Angi). For repairs, Angi's Chicago average is $1,030, and most homeowners pay $346 to $1,728 (Angi).

To price your own roof by size and material, use the calculator below or the full roofing calculator. National prices and how roofers measure a roof are on our roofing cost guide.

Flat roof systems on two-flats and three-flats

More than a quarter of Chicago homes, 27.4%, sit in buildings of two to four units, according to the Census Bureau's 2024 survey, and only about a quarter are detached houses. If your building has a flat or low-slope roof, these are Angi's Chicago prices for the common systems:

Labor alone runs $3 to $7 a square foot, and a flat roof replacement takes about five days. Whichever membrane you pick, it has to meet the city's reflectance rule described below.

Shingle roofs in the suburbs

The suburbs have a different housing mix. In Naperville, about 63% of homes are detached houses and the median home was built in 1990, and Will and McHenry counties are more than 70% detached houses. For a 2,000 square foot asphalt shingle roof, compare quotes with the $8,400 to $16,800 line in the table, plus about $2,400 to $4,800 for each old layer that has to come off.

The Illinois roofing license

Illinois licenses roofing contractors at the state level, so the same license applies everywhere in the Illinois part of the metro, from the Loop to Joliet. The Illinois Department of Financial and Professional Regulation issues two types:

The bond amounts come from the Roofing Industry Licensing Act. Each licensed company names a qualifying party who has passed the state exam, and that person has to be a regular payroll employee of the company, not a contractor paid on a 1099. The company also needs liability and property damage insurance and workers' compensation for its employees.

Illinois law adds a rule you can check without any database: a roofer must print its Illinois roofing license name and number on every contract, bid and advertisement for roofing work (815 ILCS 513/18). A flyer or estimate without it is a warning sign. Chicago's own permit system asks for the same license number before it will issue a roofing permit.

Do you need a permit?

In Chicago, the answer depends on the slope of the roof and the size of the building.

The exemptions come from the Department of Buildings' no-permit list and the fees from the city's stand-alone fee table.

When a permit is needed, most reroofs go through the online Express Permit Program. The application needs at least one photo of the roof as it is now and the roofer's Illinois license number. Structural repairs need drawings from an Illinois-licensed architect or structural engineer, and laying a new roof over two or more existing layers needs structural calculations. Condo owners need a signed approval letter from the association (Express Permit, reroofing).

In the suburbs, each city or village runs its own building department, and reroof permit rules differ from town to town. Ask the village before work starts, and expect the roofer to pull the permit. In Northwest Indiana, permits come from the city, town or county, and unincorporated Lake County requires contractors to hold a county license and at least $500,000 of liability insurance.

The reflectance rule for low-slope roofs

The Chicago Building Code requires roof coverings on low-sloped roofs to have an initial solar reflectance of at least 0.72, or a three-year-aged reflectance of at least 0.5 (Chicago Building Code, Chapter 15). In plain terms, a new flat roof in the city is almost always white or very light. Two exceptions lower the target to 0.3 aged: roofs where more than half the area is a green roof, and roofs held down by at least 15 pounds per square foot of ballast. Ask for the product's rated reflectance on the estimate.

Snow, ice dams and wind

Chicago's weather writes most roof repair bills. O'Hare averages 38.4 inches of snow and 121 days a year with a low at or below freezing, based on National Weather Service normals for 1991 to 2020 (NWS). Near the lake, banded lake effect snow can add more.

Ice dams and the ice barrier rule

When heat from the house melts snow on the upper roof, the water runs down and refreezes at the cold eave. The ice backs water up under shingles and into walls and ceilings. The Chicago Building Code answers this with an ice barrier: on shingle, metal shingle, slate and wood roofs, the eaves need two layers of underlayment cemented together or a self-adhering membrane, running from the roof edge to at least 24 inches inside the exterior wall line. Shingle roofs with a pitch between 2:12 and 4:12 also need a double layer of underlayment across the whole roof. Ask for both on the estimate, and ask the roofer to look at attic insulation and ventilation, since a warm attic feeds ice dams.

Snow load and extra layers

The city designs roofs for a ground snow load of 25 pounds per square foot. Angi's Chicago guide advises against laying a new roof over old roofing here, because the extra weight sits on top of the snow load. The city's rule that a recover over two or more layers needs structural calculations points the same way. A tear-off costs more today but shows the deck, and rotted boards can be replaced at $240 to $600 per 100 square feet.

Wind

The Groundhog Day Blizzard of 2011 brought gusts of 70 mph on the Chicago lakefront, 61 at O'Hare, 59 in Aurora and 67 at Burns Harbor in Indiana (NWS). Summer storms can be worse. On August 10, 2020, a derecho crossed the Midwest and caused about $11.5 billion in damage. In the National Weather Service Chicago area, it brought more than 160 reports of damaging wind and 15 confirmed tornadoes, including an EF-1 in Rogers Park (NWS). Wind lifts shingle tabs and peels back loose membrane edges at parapets, so check the roof after any big storm.

Storm damage and insurance claims in Illinois

Illinois has a section of its home repair law written for repairs after damaging weather, and it gives homeowners specific protections when a roof is paid for by insurance (815 ILCS 513/18):

• A roofer may not offer to pay or rebate any part of your deductible, including a "discount" that covers it
• A roofer may not act as your representative on the insurance claim; that is a public adjuster's job
• A local roofer may not rent its name or license to an out-of-area company
• If your contract will be paid from an insurance claim, you can cancel it before midnight on the earlier of two dates: the fifth business day after your insurer tells you in writing that all or part of the claim is not covered, or the thirtieth business day after the insurer receives your proof of loss
• After a cancellation, the roofer must return your payments within 10 days, except for emergency work you agreed to in writing

Photograph the damage inside and out, cover open areas to stop more water getting in, and get the adjuster's scope in writing so you can compare it line by line with the roofer's estimate. In Indiana, the Attorney General advises paying no more than one third of the price up front and confirming that the permit is issued before work starts (Indiana AG). If water is already coming through a ceiling, our Chicago plumbing guide explains where to shut off the water.

Repair or replace?

A repair makes sense when the damage is limited to a few shingles, a vent boot or one section of flashing. At Chicago prices, a vent boot costs about $90 to $180, replacing up to 25 shingles $120 to $360, and flashing work $240 to $600. A leak that has already damaged the deck or a ceiling runs $1,200 to $7,200.

Replacement starts to make sense when:

• A flat roof has blisters, open seams and standing water across large areas
• Ice dams come back every winter even after repairs
• Leaks appear in several places after the same storm
• Shingles are curled, cracked or missing granules over most of the roof
• The roof already has two layers, so the next one should start from the deck

Remember the Chicago line between the two. On a low-slope roof, even a repair needs a permit, and a replacement brings the reflectance rule. If you plan solar panels, replace an old roof first; our Chicago electrician guide covers the wiring and permit side.

Areas we cover

GOLDGCP roofers work across the Chicago metro in Illinois and Indiana:

• Chicago
• Evanston
• Oak Park
• Schaumburg
• Naperville
• Aurora
• Joliet
• Northwest Indiana, including Gary, Hammond and Valparaiso

Enter your ZIP code to see roofing prices for your area and get matched with a roofer who works there.