North Carolina plumbing license classes, side by side.

Not under the Board’s definition. Class two covers potable water and drain, waste, and vent piping systems in single-family detached dwellings only, and the Board’s definition says so in those words. Class one covers the same systems in any building, residential, commercial, or industrial. A townhouse, a duplex, or a small office is a question for the Board, not for us. We link the definitions and we read them with you, but we do not interpret them for a specific job. What we do is make sure the work we quote is the work the class allows.

The Board defines it as exterior building sewer piping, exterior water service piping at or below the pipe-size limit the definition names, exterior backflow preventers on that piping, and water filtration systems. It is the class for the work outside the building, and it does not reach the fixtures and drain, waste, and vent systems inside. For a coverage review it tells us the work is excavation and exterior piping, which brings underground and utility questions that a fixture-and-drain shop does not have.

Yes. Fuel piping is its own class in North Carolina, FP, defined as fuel gas piping from an approved fuel source to any system, equipment, or appliance inside the premises. A plumbing contractor who runs gas lines holds it alongside the plumbing class. For the coverage review, gas work is stated on the submission because carriers ask about it and the claims look different from a water leak. The class does not change what you must carry. It changes the questions and, with some markets, the appetite.

Not what you must carry. North Carolina’s Board names no bond and no policy as a condition of the license, and workers’ comp turns on how many people you regularly employ, whatever your class. What the class changes is the work we quote and the questions the underwriter asks. A P-I shop doing commercial work brings contract requirements and completed operations. A P-II shop brings occupied homes and service calls. The submission has to say which, and how the revenue splits.

The person listed on the license who is regularly on active duty at a place of business to supervise and direct all licensed work. The Board’s FAQ says each place of business of a licensed firm must have at least one, so a shop with two locations lists two. For the policy the qualified individual matters because the licensee, the qualified individual, and the named insured are the names a general contractor and an adjuster will compare, and we check them against the Board record before the quote.

The Board’s license search on its website shows every licensed contractor’s classes, status, and qualified individuals, and it is the record we read before a quote. General contractors and municipal permit desks use the same search when they vet a bid or issue a permit. The sources on this page link to the Board’s license definitions and its FAQ, where the search and the qualified individual rule live.