Illinois Contractor Licensing

Trade-by-trade licensing requirements for Illinois, sourced directly from the state regulatory board and verified by the CLR Editorial Review Desk. We currently publish 3 published trade guides, with direct links to each underlying board, statute, or candidate bulletin.

Published guides: 3
Exam-backed: 2
Bond-backed: 0
Local / municipal: 1
Avg initial fee: $175

How licensing works in Illinois

Illinois is not a one-size-fits-all licensing market. Across the 3 guides currently live on this state hub, 2 require a formal trade examination and 0 require a surety bond before the credential can issue. 1 of the published entries rely on city, county, or municipal registration rather than a single statewide credential, so contractors need to confirm the local building department or business-license office before bidding work.

The point of this state page is to give you a fast read on the regulatory model before you dive into a specific trade. Start with the trades grid below if you already know your specialty. If you are comparing jurisdictions, use the cost calculator for first-year cost and the reciprocity matrix for license portability.

Main boards and agencies

Illinois Department of Public Health — Plumbing Program

IDPH licenses plumbers, plumbing apprentices, irrigation contractors, plumbing contractors, and retired plumbers under the Illinois Plumbing License Law. The Illinois Plumbing Examiners Board approves the state plumbing examination and reviews disciplinary actions.
Open agency site
Illinois Department of Public Health, Division of Environmental Health

IDPH prequalifies swimming facility contractors and architects/engineers and issues construction and major-alteration permits for PUBLIC swimming pools, spas, bathing beaches, and aquatic features. It does not regulate general contractors or private single-family residential pools; Illinois has no statewide general contractor license.
Open agency site
Illinois Department of Financial and Professional Regulation, Division of Real Estate

IDFPR licenses and regulates home inspectors, home inspector entities, and home inspector education providers and courses; it administers the licensing examination through PSI, sets application and renewal fees, and enforces the statutory standards of practice.
Open agency site

Licensed trades

Compare Illinois against other states

Every trade above also has a national comparison hub showing how Illinois's exam, bond, fee, and experience requirements stack up against the other 50 jurisdictions.

Best starting points in Illinois

Budget

Estimate first-year cost

Compare filing fees, bond premiums, insurance assumptions, and renewal cost before you apply.

Mobility

Check reciprocity pathways

See whether this state accepts NASCLA or uses bilateral reciprocity for the trade you hold now.

Research

Search related guides

Jump directly to linked state and trade pages if you are comparing multiple jurisdictions side by side.