Becoming a licensed contractor in Illinois is not a single application. The state directly licenses only roofing (through IDFPR) and plumbing (through IDPH); general contracting, electrical, and HVAC work are licensed by individual cities and counties, each with its own rules, exams, and fees. Whatever trade you’re in, the sequence is the same: register a business entity, line up insurance and any required bond, pass the right exam for your license, and then stay compliant with the consumer-protection rules that apply to every home-improvement job over $500.
Figure Out Which License You Actually Need
Start by matching your trade to the right authority. If you install or repair roofs, you need a state license from the Illinois Department of Financial and Professional Regulation. If you do plumbing work, you need a state license from the Illinois Department of Public Health. If you’re a general contractor, an electrician, or an HVAC contractor, there is no statewide license at all; you apply to the building department of each city or county where you plan to work. A license issued by one municipality does not automatically carry into the next, so contractors who cross jurisdictions typically hold several licenses at once.
Set Up Your Business Before You Apply
Every licensing authority wants to see a legally recognized business before it will process your application. Most contractors form an LLC or corporation through the Illinois Secretary of State, though sole proprietorships operating under an assumed business name are also allowed. You’ll then need a federal Employer Identification Number from the IRS, which you can apply for online at no cost and receive immediately.1Internal Revenue Service. Get an Employer Identification Number
Register with the Illinois Department of Revenue before making purchases, sales, or hires. MyTax Illinois, the state’s online portal, processes registrations in one to two business days; the paper Form REG-1 takes four to six weeks.2Illinois Department of Revenue. Business Registration If you plan to hire employees, the same portal handles your registration with the Illinois Department of Employment Security for unemployment insurance.
How To Get A State Roofing License
The Illinois Roofing Industry Licensing Act creates two classifications. A limited license lets you work on residential properties of eight units or fewer. An unlimited license covers residential, commercial, and industrial roofing with no cap on project size.
Each applicant designates a qualifying party, usually the owner or a senior employee, who sits for a written exam. The limited exam covers residential roofing; the unlimited exam covers residential, commercial, and industrial work. Both include a section on Illinois roofing law.
You’ll also need to document general liability insurance, workers’ compensation coverage, and an active unemployment insurance account with the Illinois Department of Employment Security. A surety bond is required: $10,000 for a limited license, $25,000 for an unlimited license. The bond guarantees that you’ll comply with building codes and contractual obligations.3Illinois General Assembly. 225 ILCS 335 Roofing Industry Licensing Act
The application fee is $125, payable by check, money order, or online. IDFPR tells applicants to allow eight business weeks for processing before checking status.4Illinois Department of Financial and Professional Regulation. Roofing License Application Packet Once licensed, you must display the license at your principal place of business and include the license number in all advertising.
How To Get A State Plumbing License
Plumbing licensing runs through the Illinois Department of Public Health. The entry point is an apprentice plumber’s license, which requires you to be at least 16 and sponsored by an Illinois-licensed plumber or an approved apprenticeship program. The apprentice license can be renewed for up to six years; if you haven’t applied for the plumber exam by then, it won’t renew again.5Illinois Department of Public Health. Plumbing
To sit for the plumber licensing exam, you need at least four years as a licensed apprentice, two years of high school or equivalent, and completion of an approved plumbing course at a college, university, or trade school. File your exam application at least 30 days before the exam date using the forms on IDPH’s website.6Cornell Law School. Ill. Admin. Code tit. 68, 750.300 – Requirements for Admission to the Plumbing License Examination
How To Get A General Contractor License Locally
Chicago has the most structured system. The Department of Buildings issues five classes of general contractor license, tiered by maximum project value:7City of Chicago. General Contractor License
- Class A: unlimited project value; $5 million per-occurrence insurance; $3,500 annual fee.
- Class B: projects up to $20 million; $3 million insurance; $1,800 fee.
- Class C: projects up to $10 million; $2 million insurance; $1,300 fee.
- Class D: projects up to $4 million; $2 million insurance; $900 fee.
- Class E: projects up to $500,000; $1 million insurance; $300 fee.
Smaller municipalities tend to charge far less, often a few hundred dollars, but many require a local trade exam or proof of several years of field experience. Before taking on work in a new area, check with the local building department for its licensing ordinance, insurance minimums, and any zoning restrictions that could affect your project.
Electrical and HVAC contractors face the same patchwork. Cities and villages issue their own electrical licenses, and standards vary. Some towns accept licenses from neighbors; some don’t. HVAC licensing follows the same locally driven pattern. If you work across multiple jurisdictions, plan to maintain multiple active licenses.
Insurance, Bonds, And Workers’ Comp
Every licensing authority in Illinois requires proof of insurance. General liability of at least $1 million per occurrence is the floor you’ll see in most jurisdictions, and Chicago scales much higher for its larger license classes. Your carrier must be authorized to issue policies in Illinois, and many jurisdictions require a minimum A.M. Best rating of B+ or higher.
Workers’ compensation is not optional. If you have even one employee, including part-time, you must carry it. Sole proprietors, business partners, and corporate officers can exempt themselves, but employees cannot be left uncovered.8Illinois Workers’ Compensation Commission. Insurance Operating without coverage exposes you to civil and criminal penalties enforced by the Illinois Department of Insurance.9Illinois Department of Insurance. Workers Compensation Insurance Compliance
Surety bonds work as a financial guarantee that you’ll follow building codes and finish contracted work. State roofing bonds are set by statute at $10,000 (limited) and $25,000 (unlimited). Municipal bond requirements vary; your local building department has the number.
One procedural detail saves a lot of time: the business name on your insurance certificate must match the name on your license application exactly. A mismatch is one of the most common reasons an application stalls.
The Contract Rules That Apply To Every Residential Job
Illinois holds contractors to consumer-protection standards that apply regardless of license. The Home Repair and Remodeling Act covers any residential work costing more than $500. For contracts over $1,000, you must give the homeowner the state’s “Home Repair: Know Your Consumer Rights” pamphlet before the contract is signed, and the homeowner must sign a dated acknowledgment of receipt. For contracts between $500 and $1,000, you still have to deliver the pamphlet, but no signed acknowledgment is required.10Illinois General Assembly. 815 ILCS 513 Home Repair and Remodeling Act
Every home repair contract has to spell out:
- Full name, address, and phone number of the business.
- A description of the work to be performed.
- Start date and estimated completion date.
- Total price, with a payment schedule showing the down payment, progress payments, and final payment.
- The grounds on which either party can terminate the contract.
- A provision addressing what happens if the homeowner’s insurer denies all or part of a related claim.
Homeowners who sign a contract at their own home have three business days to cancel. Skipping the pamphlet or omitting a required term is treated as a violation of the Consumer Fraud and Deceptive Business Practices Act, which lets the Attorney General or a state’s attorney pursue enforcement and lets the homeowner sue for actual damages.11Illinois General Assembly. 815 ILCS 513/20 – Consumer Rights Brochure
Classifying Your Workers Correctly
The Illinois Employee Classification Act targets construction specifically. Everyone performing services for a contractor is presumed to be an employee unless you can prove otherwise under a four-condition test: the worker is free from your control over how they do the job, their work is outside your usual course of business, they’re engaged in an independently established trade, and they qualify as a legitimate sole proprietor or partnership under the Act’s twelve-factor checklist.12Justia Law. Illinois Code 820 ILCS 185 – Employee Classification Act
The twelve-factor checklist is where contractors get caught. Among other requirements, the subcontractor must have substantial capital investment beyond basic tools and a personal vehicle, must make services available to the general public, and must report income as an independent business on federal taxes. Fail any one factor and the worker is your employee under Illinois law.
Penalties are concrete. A first audit finding carries fines up to $1,000 per misclassified worker. Repeat violations within five years jump to $2,000 per worker.13Illinois Department of Labor. Employer Misclassification of Workers Add back payroll taxes, unemployment insurance contributions, and potentially workers’ comp premiums for every misclassified person.
Federal Rules That May Stack On Top
Some projects trigger federal certifications regardless of your state or local status. The main one for residential work is the EPA’s Lead Renovation, Repair, and Painting rule. Any renovation that disturbs painted surfaces in a home, child care facility, or school built before 1978 has to be performed by an EPA-certified lead-safe renovator working for a certified firm.14US EPA. Lead Renovation, Repair and Painting Program Initial certification requires an eight-hour training course with two hours of hands-on work, with periodic refreshers after that.15US EPA. Renovation, Repair and Painting Program Renovator Training Homeowners doing their own work are exempt. Contractors are not, and that includes house flippers.
Any excavation project requires you to contact JULIE (Joint Utility Locating Information for Excavators) by calling 811 at least two to three business days before breaking ground. Illinois law imposes penalties up to $5,000 per offense for failing to notify utility owners through JULIE, plus up to $2,500 per offense for other violations of the law and full liability for damage to underground utilities.16Illinois General Assembly. 220 ILCS 50/11
Illinois does not require OSHA 10-hour construction safety training statewide, but many municipalities and project owners require it as a condition of being on their sites.
What Happens If You Work Without A License
For roofing, enforcement runs on two tracks. IDFPR can impose civil penalties up to $15,000 per offense for performing roofing work without a license. A first criminal offense is a Class A misdemeanor with up to one year in jail and a fine up to $2,500; a second or later conviction becomes a Class 4 felony with fines up to $25,000. Each day of unlicensed operation is a separate offense, so the numbers add up fast.3Illinois General Assembly. 225 ILCS 335 Roofing Industry Licensing Act Advertising roofing services without displaying a valid license number is its own Class A misdemeanor, with a $1,000 fine for each day the ad runs.
At the local level, municipalities can issue stop-work orders, revoke building permits, and impose their own fines on unlicensed general contracting, electrical, or HVAC work. There’s also a collection problem: Illinois courts have voided contracts and denied mechanics’ liens where the contractor lacked a required license, which means you could do the work and have no legal way to force payment.
Keeping The License Active
Every license has an expiration date, and a lapsed license is an unlicensed license. IDFPR opens online renewal roughly two to three months before a roofing license expires. Plumbing renewals go through IDPH. Municipal renewals follow each city’s own schedule and fee structure.
Insurance and bonds have to stay in force the whole time. If a policy lapses or a bond is cancelled, your license can be suspended automatically, sometimes before you know there’s a problem. Calendar every renewal date, insurance expiration, and bond term for every jurisdiction where you hold a license.