Illinois Contractor License: What the State Licenses and What Your City Does

Illinois has an unusual licensing structure for contractors. Unlike many states, Illinois does not issue a state general contractor license, electrical license, or HVAC license. Instead, the state licenses only specific trades, and most contractor work is regulated at the municipal level. If you're planning to work as a contractor in Illinois, you need to understand the split between state and local requirements, or you risk penalties and loss of work.

The Illinois Licensing Split: State vs. Local Control

Illinois has two tiers of contractor regulation. At the state level, only specific trades are licensed by state agencies. Everything else, general contracting, carpentry, masonry, concrete work, and dozens of other trades, is regulated by your city or county. This means you may need to register in your municipality even though Illinois doesn't require a state general contractor license.

When someone says "does Illinois require a contractor license," the honest answer is "it depends on your trade and where you work." The licensing requirement and the cost can vary dramatically from one jurisdiction to another. A contractor working in unincorporated Cook County pays different fees than one working in Chicago or Mount Prospect. Knowing which level applies to you is the first step.

What Illinois Licenses at the State Level

The state of Illinois licenses contractors in five specific areas through state agencies. If your work falls into one of these categories, you need a state license regardless of where you work in the state.

Roofing Contractors

The Illinois Department of Financial and Professional Regulation (IDFPR) licenses roofing contractors. This covers work that involves the installation, repair, or replacement of roofing materials. Roofing is one of the few trades that requires a state license in Illinois. You cannot legally perform roofing work without an IDFPR roofing contractor license, and you must also comply with any additional municipal requirements where you work.

Plumbing Contractors

The Illinois Department of Public Health (IDPH) licenses plumbing contractors. Plumbing work includes the installation, alteration, repair, and maintenance of piping systems and fixtures. Like roofing, plumbing is a statewide licensed trade in Illinois. Municipal jurisdictions may add their own registration or bonding requirements on top of the state license.

Fire Sprinkler Contractors

The Office of the State Fire Marshal (OSFM) licenses fire sprinkler contractors, and this license is one of the more expensive state contractor licenses in Illinois at $3,000. Fire sprinkler contractors install, inspect, test, and maintain fire suppression systems. This license applies to fire sprinkler contracting statewide.

Elevator Contractors

The OSFM also licenses elevator contractors. Elevator work is highly regulated and requires state certification. This is a specialized trade with strict requirements for installation, maintenance, and inspection of elevator systems.

Asbestos Abatement Contractors

The IDPH licenses asbestos abatement contractors at a cost of $250, plus an additional $500 fee (total of $750). Illinois regulates asbestos contractors because asbestos removal involves health and safety hazards. If you handle asbestos removal or remediation, you must hold this license.

The Home Repair and Remodeling Act: Consumer Protections You Must Follow

Illinois law requires all contractors to follow specific rules for consumer protection, regardless of whether they hold a state license or municipal registration. The Illinois Home Repair and Remodeling Act sets minimum standards that apply to jobs in the home construction and repair space.

Under this act, every contractor must provide a consumer-rights pamphlet to every customer. For jobs valued over $1,000, you must also provide a written contract and obtain the customer's signed acknowledgment that they received the pamphlet. This requirement applies whether you're a general contractor, a roofer, a carpenter, or a specialist contractor doing work over that threshold. Failure to comply with these rules can result in significant penalties and damages in a lawsuit.

The consumer-rights pamphlet explains the customer's protections, including their right to a written contract, the contractor's warranty obligations, and their remedies if work is defective. Taking the time to document this acknowledgment protects you in disputes and demonstrates your professionalism.

Municipal Contractor Registration Requirements: The City and County Layer

Because Illinois does not issue a state general contractor license for most trades, your city or county is responsible for regulating contractor work in that area. The requirements, fees, and registration process vary significantly by jurisdiction. Here's what you need to know for Illinois's major cities and Cook County.

Chicago Contractor Licensing

Chicago is one of the most regulated contracting markets in Illinois. The Chicago Department of Buildings (DOB) issues contractor licenses in five classes: Class A, B, C, D, and E. The class you need depends on the scope of work and contract value. Chicago's system is more formal than many other Illinois municipalities, and you'll need to verify the current class requirements and fees with the DOB.

Unincorporated Cook County

If you work in unincorporated Cook County (areas outside Chicago and the incorporated suburbs), Cook County requires contractor registration. The registration fee is $150 per trade, plus an annual renewal fee of $75. This applies to each type of contracting work you perform, so if you do both carpentry and roofing, you'd pay $150 for each trade plus renewals.

Waukegan

Waukegan, in Lake County, requires contractor registration at $100 per year. Waukegan also requires a bond of $10,000 to $15,000 depending on the trade ($10,000 for electricians, $15,000 for demolition and excavation or sewer work).

Mount Prospect

Mount Prospect charges $200 for contractor registration, valid for one year from issuance.

Evanston

Evanston has a tiered fee structure: $150 per year for a general contractor license or $125 per year for a trade-specific license. This structure encourages contractors to pick a primary classification, though you may need to register in multiple categories if your work spans multiple trades.

Other Illinois Cities

Bloomington requires contractor registration at $100 per year (confirm this amount with the city). Rockford charges $25 per year for electrical contractor registration. However, even jurisdictions with low registration fees may require bonds, insurance certificates, or permit approval for individual projects.

The Suburban Variation

Illinois has over 1,200 municipalities, and many of them regulate contractor work within their borders. A contractor who works across multiple municipalities in the Chicago area may hold registrations in Chicago, several Cook County suburbs, DuPage County, Lake County, and other jurisdictions, each with different fees and rules. Budget for this complexity if you plan to work regionally.

Municipal Bonding and Insurance Requirements

Many Illinois municipalities require contractors to carry liability insurance, and some require performance bonds. These are separate from licensing and can add significantly to your cost of doing business. When you register as a contractor in a given city, ask about bond and insurance requirements. Some municipalities set minimum coverage amounts; others accept what you and your customer agree to. Insurance and bonding requirements vary as widely as registration fees, so confirm them with each jurisdiction where you plan to work.

Steps to Get Licensed or Registered as an Illinois Contractor

First, identify your trade. Is your work in a state-licensed category (roofing, plumbing, fire sprinkler, elevator, or asbestos abatement)? If yes, start with the state agency.

Second, find your jurisdiction. Where will you perform most of your work? That city or county sets the local requirements and fees.

Third, contact the appropriate agencies. For state licenses, reach out to IDFPR, IDPH, or OSFM. For municipal registration, contact your city or county building/development department. Ask for an application, current fees, processing times, and any bonding or insurance requirements.

Fourth, prepare documentation. Most jurisdictions require proof of insurance, business information, tax identification, and identification of the business owner. Have these items ready.

Fifth, budget for renewal. State licenses and municipal registrations expire and must be renewed on a schedule set by each agency. Track renewal dates to avoid lapses in your license.

Finally, understand the Home Repair Act requirements. Obtain a copy of the Illinois Home Repair and Remodeling Act consumer-rights pamphlet, and commit to providing it and documenting customer acknowledgment on jobs over $1,000.

Why This Matters: The Risk of Operating Without Proper Licensing

Working without a required license or registration in Illinois can result in fines, stop-work orders, denied permits, and other penalties depending on the trade and jurisdiction. If your work causes injury or property damage, being unlicensed can affect your liability insurance coverage and your ability to obtain insurance in the future.

Bottom Line

Illinois does not require a state general contractor license for most trades, which gives you flexibility but also requires you to know your local rules. State licenses apply only to roofing, plumbing, fire sprinklers, elevators, and asbestos abatement. Municipal registration is required for most work in many Illinois cities and counties, with fees ranging from $25 a year in some cities to $3,500 a year for Chicago's Class A general contractor license. All contractors must follow the Home Repair and Remodeling Act, providing a consumer-rights pamphlet and a written contract for jobs over $1,000. Before you market yourself as a contractor in Illinois, confirm the licensing and registration requirements for your specific trade and location.

Disclaimer

This guide provides informational content about Illinois contractor licensing and is not legal or tax advice. Contractor licensing requirements, fees, and procedures change over time and vary by municipality. Before beginning work or making decisions based on this information, consult the appropriate state agency or your city or county building department to confirm current requirements, fees, and application procedures. If you face licensing questions that involve legal obligations or compliance risk, consult with a qualified attorney licensed in Illinois.