Maine renewal guide
Master Plumber
If this license is up for renewal, this page gives you the fee, the timeline, and the items that usually hold the filing up.
Start here
What matters before you file.
Check the fee, the renewal window, and the documents or insurance records that can slow approval down.
Issuing authority
Renewal period
Every 24 months
Renewal fee
$200.00
Late penalty
$50.00
Bond requirement
No
Insurance requirement
No
Before you renew
Get the filing straight.
- 1
File with the board
File through Maine Plumbers' Examining Board and pay the $200.00 renewal fee once the supporting proof is ready.
Renew online - 2
Leave room for processing
Typical processing time is 30 days, so do not wait until the last minute.
If you miss the deadline, the late penalty is $50.00, with a 90-day grace period.
Detailed notes
The fine print is here.
Maine Master Plumber License
The Maine Plumbers' Examining Board, under the Office of Professional and Occupational Regulation, issues Master Plumber licenses. A Master Plumber is authorized to plan, layout, and supervise the installation of plumbing systems.
What This License Authorizes
Master Plumbers may perform and supervise all types of plumbing installations. Maine law requires that any plumbing contractor either hold a Master Plumber license or employ a licensed Master Plumber. A Master Plumber may supervise licensed Journeyman Plumbers and Trainee Plumbers.
Requirements
- Pass the Master Plumber examination (closed book, $65 exam fee)
- Hold a valid Journeyman Plumber license with at least 1 year and 2,000 hours of journeyman-level plumbing experience
- Complete a criminal background check ($21 fee)
- Application Fee: $221 (includes $200 license fee + $21 background check)
Renewal Process
- Renewal Period: Every 2 years from date of first licensure
- Renewal Fee: $200
- Late Fee: $50 for renewals up to 90 days after expiration
- No Continuing Education Required: Maine does not mandate continuing education for plumber license renewals
- Renewals more than 90 days late but within 2 years require a $100 penalty fee in addition to the $200 license fee
Insurance
Insurance is not required by the Board for individual licensure, but is recommended.
*Disclaimer: This information is provided for general reference only and does not constitute legal advice. Always verify current requirements directly with the Maine Plumbers' Examining Board.*
Official links
Check the board or agency directly.
Required documents
- exam_results
- proof_of_experience
- Background Check
Source notes
Maine Plumbers' Examining Board, Office of Professional and Occupational Regulation . Verified March 2026. https://www.maine.gov/pfr/professionallicensing/professions/plumbers-examining-board/licensing/individual-licenses
Rules move. Check Maine Plumbers' Examining Board again before you pay, renew, or schedule work around this requirement.
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Next steps
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Printable checklist
Maine checklist
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