Texas Plumbing Code and Licensing, Explained by Your Plumber Southlake TX

Texas plumber license requirements, in everyday terms

The board lists apprentice registration, journeyman plumber, master plumber, responsible master plumber, a limited tradesman category and plumbing inspector among its credentials. A journeyman installs and repairs under a master plumber. The responsible master plumber is the individual a plumbing firm names as answerable for its work.

State law generally calls for a licensed plumber on installations, repairs and alterations. The familiar carve-out covers an owner tackling the plumbing in his or her own single-family residence. Keller's building services page puts it simply: do the work yourself if no one is being paid. Even then, permit and inspection duties can still apply, and the finished job has to meet code.

Which rulebook governs the work

The board's code rule adopts a Uniform Plumbing Code and an International Plumbing Code as minimums, together with related fuel gas and residential codes. It also lets a local government adopt a plumbing code with amendments aimed at local concerns, so long as those do not substantially vary from state rules or law.

In practice, installation follows whatever code the city of the job site has adopted. Edition years change through rulemaking, so none is quoted here. Phone the city's building office and ask which edition it enforces. That single answer settles most arguments about what is required.

A license follows a person. A permit follows a job at an address. A given project may need both.

What the four cities say about permits

Southlake's resident news outlet states that adding or swapping out a water heater calls for a plumbing permit, and the city handles applications through an online portal. Colleyville has contractors and homeowners register through its web portal and, since late 2023, runs virtual inspections for water heater swaps and under-slab repairs. Grapevine registers contractors at its Building Inspection Department on South Main Street, with no registration fee for plumbing contractors. Keller requires a permit to install, alter, repair or replace plumbing and gas systems.

An inspector then compares the finished work with the adopted code. Keller spells out one example: a gas water heater in a garage has to be raised at least eighteen inches off the floor, and its relief valve must discharge outdoors.

Checking a contractor in under five minutes

Go to the board's website and open the public license search. Type in a name or license number, then read the status and the license type. Next, ask the contractor who applies for the city permit and when the inspector will visit. Hesitation on either question is information. The same questions apply to us, and you should feel free to ask them.

This website does not publish a license number, so do not take our word for anything on this page. Ask for the responsible master plumber's name and run the search yourself.

If you suspect past work was never permitted

Older homes in all four cities have been remodeled many times, and a prior owner may have skipped paperwork. If you are buying or you find a water heater or bathroom with no permit on file, ask the city's building office what records exist and what options are open. Do that before you hire anyone to build over the area, because covered work is the hardest to inspect.