Cost and decision guides
Can Homeowners Legally Do Their Own Plumbing in Texas?

Yes, with real limits: Texas Occupations Code Section 1301.051 lets homeowners perform plumbing work on their own occupied primary residence without a license, but this homestead exemption does not cover rental properties, gas line work, connecting to public utility systems, or hiring an unlicensed person to do the work for you - and permits and inspections still typically apply.