West Virginia Plumbing Contractor License

Plumbing Licensing Is a Two-Track System

Plumbing in West Virginia is regulated by the Division of Labor under West Virginia Code Chapter 21, Article 14 — not the Contractor Licensing Board. No plumbing installation or alteration can be performed without a license issued by the Division.

But here's where it gets complicated: if a plumbing contracting business bids on projects exceeding the state's contractor licensing thresholds ($2,500 residential, $5,000 commercial), it also needs a contractor license from the WVCLB. So a plumbing contractor typically operates under two parallel licensing frameworks.

Individual Plumber Credentials

Journeyman Plumber — Requires a minimum of four years (8,000 hours) of practical plumbing experience plus passage of the journeyman plumbing exam. A Journeyman Plumber can perform plumbing work but must operate under the direct supervision of a Master Plumber.

Master Plumber — Requires at least six years (12,000 hours) of practical plumbing experience, including a minimum of two years as a licensed Journeyman, plus passage of the master plumbing exam. This is the credential that authorizes independent plumbing work and qualifies you to be the designated qualifying agent for a plumbing contracting business.

The experience requirements are strict and documented — the Division of Labor verifies hours and employment history.

Starting a Plumbing Contracting Business

To operate as a plumbing contractor (not just an individual plumber), you need:

1. An active Master Plumber on staff as the designated qualifying agent — this person's license is what authorizes the business to pull plumbing permits
2. A contractor license from the Contractor Licensing Board (if project values exceed state thresholds), requiring the Business and Law exam, $90 application fee, insurance certificates, and wage bond compliance
3. Business entity registration with the Secretary of State
4. Business Registration Tax Number from the State Tax Department
5. Workers' compensation and unemployment insurance (if you hire employees)

Only a business employing an active Master Plumber as its designated qualifier can pull local plumbing permits. An individual Master Plumber license doesn't automatically authorize operating a contracting business.

Trade Boundary Limits

A Master Plumber license has clear boundaries. It does not authorize gas appliance connections beyond the initial plumbing rough-in point — that scope falls under HVAC and gas-fitting regulations. And plumbing contractors cannot perform electrical work associated with plumbing fixtures, like wiring a water heater — that requires a licensed electrician.

General contractors holding a Class B license also cannot self-perform plumbing work. If your general contracting project includes plumbing, you must subcontract to a properly licensed plumbing contractor with a Master Plumber on staff.

Municipal Permit Requirements

Local building departments will not issue plumbing permits without verifying both Division of Labor plumber credentials and contractor licensing status. Municipalities also require local business registration and B&O tax compliance before any permit work begins. Division of Labor field inspectors routinely audit job sites to confirm all personnel performing plumbing work hold the required certifications.

The West Virginia General Contractor License Guide explains how plumbing licensing fits into the broader contractor licensing framework and what general contractors need to know about subcontracting plumbing work.

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