⚠️ Important: This comparison is based on published state licensing requirements and may not reflect recent changes. Reciprocity and transfer rules change frequently and are evaluated on a case-by-case basis by state licensing boards. This tool is for research purposes only and does not constitute legal or professional advice. Always contact Illinois Department of Public Health (IDPH) directly to confirm current transfer requirements before submitting any applications or fees.

Transfer Your Plumber License: Missouri → Illinois

Everything you need to know about transferring your plumber license from Missouri to Illinois

Reciprocity Available

Endorsement

Requirements Comparison

Requirement	Missouri (MO)	Illinois (IL)
Education Requirements	High school diploma or GED	High school diploma or GED
Exam Requirements	Provider: unknown	Provider: IDPH (state-administered exam)
Experience Requirements●	apprentice: null; journeyman: null; master: null	apprentice: Registration required; no prior experience; journeyman: Minimum 4 years (48 months) as an Illinois licensed apprentice plumber under supervision; high school graduate or 2-year equivalent course of study; approved course of instruction through a college, university, or trade school. Citizenship requirement listed on the older IDPH mirror site; not explicitly restated on the current IDPH page but confirmed in the exam application.; master: Illinois does NOT have a master plumber license. A licensed plumber can register as a Plumbing Contractor (business registration, not separate exam).
Fees	confidence: high	apprentice registration: $100; exam fee: $175; total initial fees: $275; confidence: high
Renewal / CE Requirements●	Period: N/A; CE hours: null; Fee: null	Period: Annual; licenses expire April 30 each year; CE hours: 4; Fee: null

Data verified as of 2026-04-03. Requirements may have changed since verification.

Key Differences

Illinois accepts out-of-state plumber licenses via reciprocity/endorsement.
Experience differs: Missouri — apprentice: null; journeyman: null; master: null; Illinois — apprentice: Registration required; no prior experience; journeyman: Minimum 4 years (48 months) as an Illinois licensed apprentice plumber under supervision; high school graduate or 2-year equivalent course of study; approved course of instruction through a college, university, or trade school. Citizenship requirement listed on the older IDPH mirror site; not explicitly restated on the current IDPH page but confirmed in the exam application.; master: Illinois does NOT have a master plumber license. A licensed plumber can register as a Plumbing Contractor (business registration, not separate exam)..
Renewal differs: Missouri — Period: N/A; CE hours: null; Fee: null; Illinois — Period: Annual; licenses expire April 30 each year; CE hours: 4; Fee: null.

Next Steps

1
Contact the destination state board to confirm current transfer/reciprocity requirements. Visit Illinois Department of Public Health (IDPH) →
2
Request credential verification from Missouri — NO statewide plumber licensing body. Licensing handled entirely at city/county level. State statutes (RSMo 341.090–341.220) set minimum qualification standards. — this often takes 4–8 weeks.
3
Gather required documentation (education transcripts, experience logs, exam scores).
4
Submit your application to Illinois Department of Public Health (IDPH).

These steps are general guidance based on common transfer processes. Your state may have a different process. Always follow the instructions provided by your state licensing board.

Illinois Licensing Board

Board: Illinois Department of Public Health (IDPH)
Website: https://dph.illinois.gov/topics-services/environmental-health-protection/plumbing.html
Phone: (217) 524-0791

Contact Illinois Department of Public Health (IDPH) to confirm current transfer requirements →

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LicenseMap is a research tool and does not provide legal, financial, or professional licensing advice. Licensing requirements vary by state and change frequently. Verify all information directly with your state licensing board before making licensing decisions.

Requirements Comparison

Requirement	Missouri (MO)	Illinois (IL)
Education Requirements	High school diploma or GED	High school diploma or GED
Exam Requirements	Provider: unknown	Provider: IDPH (state-administered exam)
Experience Requirements●	apprentice: null; journeyman: null; master: null	apprentice: Registration required; no prior experience; journeyman: Minimum 4 years (48 months) as an Illinois licensed apprentice plumber under supervision; high school graduate or 2-year equivalent course of study; approved course of instruction through a college, university, or trade school. Citizenship requirement listed on the older IDPH mirror site; not explicitly restated on the current IDPH page but confirmed in the exam application.; master: Illinois does NOT have a master plumber license. A licensed plumber can register as a Plumbing Contractor (business registration, not separate exam).
Fees	confidence: high	apprentice registration: $100; exam fee: $175; total initial fees: $275; confidence: high
Renewal / CE Requirements●	Period: N/A; CE hours: null; Fee: null	Period: Annual; licenses expire April 30 each year; CE hours: 4; Fee: null

Data verified as of 2026-04-03. Requirements may have changed since verification.

Key Differences

Illinois accepts out-of-state plumber licenses via reciprocity/endorsement.

Experience differs: Missouri — apprentice: null; journeyman: null; master: null; Illinois — apprentice: Registration required; no prior experience; journeyman: Minimum 4 years (48 months) as an Illinois licensed apprentice plumber under supervision; high school graduate or 2-year equivalent course of study; approved course of instruction through a college, university, or trade school. Citizenship requirement listed on the older IDPH mirror site; not explicitly restated on the current IDPH page but confirmed in the exam application.; master: Illinois does NOT have a master plumber license. A licensed plumber can register as a Plumbing Contractor (business registration, not separate exam)..

Renewal differs: Missouri — Period: N/A; CE hours: null; Fee: null; Illinois — Period: Annual; licenses expire April 30 each year; CE hours: 4; Fee: null.

Next Steps

Contact the destination state board to confirm current transfer/reciprocity requirements. Visit Illinois Department of Public Health (IDPH) →

Request credential verification from Missouri — NO statewide plumber licensing body. Licensing handled entirely at city/county level. State statutes (RSMo 341.090–341.220) set minimum qualification standards. — this often takes 4–8 weeks.

Gather required documentation (education transcripts, experience logs, exam scores).

Submit your application to Illinois Department of Public Health (IDPH).

These steps are general guidance based on common transfer processes. Your state may have a different process. Always follow the instructions provided by your state licensing board.

Transfer Your Plumber License: Missouri → Illinois

Reciprocity Available

Requirements Comparison

Key Differences

Next Steps

Illinois Licensing Board

Prepare for Your Licensing Exam

Related Pages

Transfer Your Plumber License: Missouri → Illinois

Reciprocity Available

Requirements Comparison

Key Differences

Next Steps

Illinois Licensing Board

Prepare for Your Licensing Exam

Related Pages