Licensing, Business Operations, and Illinois Regulatory Compliance
The licensing layer cake
Illinois licenses roofing contractors under the Roofing Industry Licensing Act (225 ILCS 335), administered by the Illinois Department of Financial and Professional Regulation (IDFPR). Three points trip candidates up constantly. First, the license belongs to the business entity - corporation, LLC, partnership, or sole proprietorship - and that entity must designate a qualifying party who passes the required examination and is accountable for the work the company performs. One roofer's personal experience does not license a company. Second, Illinois has no statewide general contractor license; holding a GC credential from another state qualifies you for nothing here. Roofing is separately regulated, and many municipalities (Chicago among them) add their own registration, bond, insurance, and permit requirements on top of the state license. Third, license status follows the entity: if the qualifying party leaves, the business has an affirmative duty to replace that person and notify the Department.
Business-side compliance
Residential work pulls in the Home Repair and Remodeling Act (815 ILCS 513): for home repair or remodeling of $1,000 or more, the contractor must use a signed written contract and give the consumer the "Home Repair: Know Your Consumer Rights" brochure. Door-to-door (home solicitation) sales carry a three-business-day right to cancel. Payment disputes fall under the Contractor Prompt Payment Act, and nonpayment remedies live in the Mechanics Lien Act - a subcontractor's lien is generally served within four months after completion, with suit to foreclose within two years. Employers with even one employee need Illinois workers' compensation coverage, and general liability limits should be verified against current IDFPR rules rather than memory.
Rule of thumb
Run the three-document check before signing: license number on the proposal, written contract with scope and price, and the consumer brochure for residential jobs. On a $1,000-plus residential job, one missing document makes the paperwork defective no matter how good the roof is.