How to get a plumbing contractor license in Illinois
Illinois plumbing contractor licensing covers hours, prerequisites, exam path, fees, and renewal. Confirm current rules on the board source before you apply.
Verified on: 2026-09-14 · Board source
From the board
- Plumbing # Plumbing Are you preparing to close or reopen your building or business?
- Did you know that your building’s water quality may be impacted by changes in water use?
- Whether your building is closed, unoccupied, or less occupied due to COVID-19, vacation or any other reason, have a plan and flush away stagnant water to protect your water quality!
- Improper plumbing can result in the introduction of pathogenic organisms into drinking water and the escape of toxic gases into the environm
- Board page: Plumbing
Requirements overview
- Illinois sets experience, education, and exam rules for plumbing contractor applicants
- Documented OJT or apprenticeship hours are common for journeyman / technician paths
- Master and contractor tracks usually add experience, exams, and firm paperwork
- Confirm current hour totals, affidavits, and fees on the state board before you apply
Exam
- See the Illinois plumbing exam guide for vendor, scheduling, and prep
- LicenseFlo helps with paperwork and reminders — we do not sit the exam
Renewals
- Most credentials renew on a fixed cycle with mandatory CE or training
- Roster watch → intake → assemble → sign → submit
Related: Exam · Renewal and CE
Have LicenseFlo do it
From $79 per event. Text once; we collect photos, assemble the packet, and send a one-tap signature.