How often do I need to renew my Master Plumber License in Maryland?

The Master Plumber License in Maryland must be renewed every 24 months.

How much does it cost to renew a Master Plumber License in Maryland?

The renewal cost for a Master Plumber License in Maryland is $87.50.

What happens if my Master Plumber License expires in Maryland?

Performing plumbing work without a valid Maryland master plumber license is a misdemeanor. Penalties include fines up to $5,000 and up to 1 year in jail.

Maryland renewal guide

Master Plumber License

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

Maryland Board of Plumbing

Renewal period

Every 24 months

Renewal fee

$87.50

Bond requirement

No

Insurance requirement

Yes — General Liability, Workers' Compensation

Before you renew

Get the filing straight.

1
Check the insurance certificates

Make sure the required policies are current and match what the board or agency expects before you file.
2
File with the board

File through Maryland Board of Plumbing and pay the $87.50 renewal fee once the supporting proof is ready.
Renew online
3
Leave room for processing

Typical processing time is 30 days, so do not wait until the last minute.

Detailed notes

The fine print is here.

Maryland Master Plumber License

The Maryland Board of Plumbing issues statewide licenses for plumbing contractors. Plumbing is regulated at the state level in Maryland.

Requirements

Experience: Minimum 7 years of plumbing experience, including time as a licensed journeyman
Examination: Must pass the state Master Plumber exam
Insurance: General liability and workers' compensation insurance
Application Fee: $70

Renewal Information

Renewal Period: Every 2 years
Renewal Fee: $87.50
No CE Required: Maryland does not require continuing education for master plumbers (CE applies only to plumbing inspectors)

Scope of Work

Master plumbers can install, maintain, and repair plumbing systems including water supply, drainage, gas piping, and fixture installation throughout Maryland.

License Tiers

Maryland's plumbing licensing includes:

Master Plumber: Can supervise and contract for plumbing work
Journeyman Plumber: Can perform plumbing work under supervision
Apprentice: Learning under journeyman/master supervision

*Disclaimer: This information is provided for general reference only and does not constitute legal advice. Always verify current requirements directly with the Maryland Board of Plumbing.*

Official links