Direct Answer
To hire a reliable plumbing contractor in Houston: (1) Get 3 written quotes with line-item breakdowns, (2) Verify TX license at Texas Department of Licensing and Regulation (tdlr.texas.gov), (3) Confirm active general liability and workers' comp insurance, (4) Check Google and BBB reviews specific to Houston projects, (5) Never pay more than 10-30% upfront — never pay in full before completion.
Full Explanation
Red flags specific to Houston contractors: no physical Houston-area address, pressure to start immediately, cash-only payment demands, and license numbers that don't verify at Texas Department of Licensing and Regulation (tdlr.texas.gov). Seasonal demand during summer brings out less reputable contractors.
Local Factors in Houston
📍Verify license: Texas Department of Licensing and Regulation (tdlr.texas.gov)
📍File complaints: Texas Department of Licensing and Regulation (tdlr.texas.gov)
📍Homeowner protections under TX consumer protection law
📍BBB Greater Houston chapter for complaints history