Gas — Houston, TX

Gas in Houston: what to know

In Texas, natural-gas and fuel-gas line work — running a new line for a range, tankless water heater, pool heater, or standby generator, and finding or repairing a leak — is plumbing work performed by a plumber licensed by the Texas State Board of Plumbing Examiners (TSBPE), often one who holds an LP/natural-gas endorsement. Most Texas cities require a permit and a pressure test with an inspection before a new or altered gas line is put into service, because a mistake here can mean a gas leak or carbon-monoxide risk, not just a drip. Interest in gas standby generators and gas appliances has grown across the state since the February 2021 winter storm, when hard freezes knocked out power. Because permits and inspections are handled city by city, the exact requirements can differ from one jurisdiction to the next.

What affects the cost

• Length and routing of the line, and whether it runs through walls, a slab, an attic, or underground to a detached point such as a generator, pool heater, or outdoor kitchen.
• Pipe material and method: black iron pipe versus flexible CSST, plus any trenching or boring needed under driveways or landscaping.
• Sizing the system: adding a high-demand appliance can require upsizing the meter, regulator, or main line so every appliance still gets enough pressure.
• Permit and inspection: the pressure test and city inspection that most jurisdictions require before the line can be used.
• The appliance connection itself (range, tankless heater, pool heater, generator) and any related electrical or venting/CO work the appliance needs.
• Leak repair versus new install: locating and isolating a leak can mean opening walls or excavating to reach the pipe.

How to choose a Gas contractor

• Verify the contractor is a plumber licensed by the Texas State Board of Plumbing Examiners (TSBPE) — you can look up the license number — and ask whether they hold the LP/natural-gas endorsement for gas work.
• Confirm they will pull the city permit and schedule the pressure test and inspection; that inspection is your independent proof the line holds and is safe.
• Ask for proof of liability insurance and a written scope that spells out line size, pipe material, and appliance connections.
• For any leak or carbon-monoxide concern, make sure they test the whole system rather than just the visible section, and confirm appliances are venting correctly.
• Get an itemized written estimate so trenching, permit and inspection, and the appliance hookup are each listed separately.