How much does a plumber cost in Houston, TX?

Most licensed plumbers in Houston charge a service call fee of $75–$150 to diagnose the problem, then bill by the job or by the hour. Hourly rates for Journeyman-level work run $95–$150/hr; Master Plumbers and specialty technicians (slab leak, hydrojetting) charge $120–$200/hr. Common job totals: toilet replacement ($250–$550), water heater replacement ($900–$1,600), slab leak detection ($200–$500). Always get a written estimate before authorizing work — Texas law requires written contracts for residential work over $500.

What is a slab leak and why is it so common in Houston?

A slab leak is a failure in the water supply or drain lines running beneath your home's concrete slab foundation. Houston's gumbo clay soil is among the most expansive in the United States, swelling 6–10% in volume when wet and contracting sharply during drought cycles. This continuous movement stresses the copper and CPVC pipes embedded below the slab, causing pinhole leaks and joint failures at 2–3× the national average rate. Warning signs include unexplained warm spots on the floor, the sound of running water when all fixtures are off, or a sudden spike in your water bill from the [City of Houston water utility](https://www.houstonwater.org/). Electronic or acoustic leak detection ($200–$500) is required to locate the failure before any repair begins.

Do I need a permit to replace a water heater in Houston?

Yes. The City of Houston requires a plumbing permit for water heater replacement, and only a licensed Master Plumber can pull it. Confirm with your contractor that they will obtain the permit and that the job includes a City inspection sign-off. Water heaters replaced without a permit can void your homeowner's insurance coverage for related water damage and create title complications when you sell the property.

How do I verify a plumber's license in Texas?

Texas plumbers are licensed by the [Texas State Board of Plumbing Examiners (TSBPE)](https://www.tsbpe.texas.gov/). You can verify any plumber's current license status, license type (Apprentice, Journeyman, or Master), and disciplinary history using the TSBPE license lookup tool on their website. Ask the contractor for their TSBPE license number before scheduling work. Any legitimate Master Plumber will share it without hesitation; refusal is a red flag.

How long does a slab leak repair take in Houston?

Detection typically takes 2–4 hours using electronic or acoustic equipment. Repair time depends on method: epoxy pipe restoration (trenchless) adds a 24–48-hour cure period with no excavation. Tunneling — the preferred method for isolated pressure-line leaks under Houston slabs — typically takes 2–5 days total: one day to hand-excavate the tunnel, one day to repair the pipe, and one day to backfill and restore flooring. A full whole-house repipe (for homes with pervasive under-slab copper deterioration) takes 5–10 business days depending on square footage and fixture count.

What inner-loop Houston neighborhoods have the oldest plumbing?

Homes built between 1940 and 1979 in Montrose, The Heights, EaDo (East Downtown), Midtown, Cottage Grove, Oak Forest, and Memorial are most likely to have original cast iron drain lines and copper supply lines that are at or past their service life. Cast iron drain pipes typically last 50–75 years; many homes in these neighborhoods are now in that failure window. A sewer camera inspection ($150–$300) is the best diagnostic tool before purchasing a home in these areas — and should be standard in any pre-purchase inspection checklist.

Does Houston's hard water damage plumbing systems?

Yes. Houston's municipal water averages 4–8 grains per gallon of hardness (130–160 mg/L TDS), drawn from surface reservoirs including Lake Houston and Lake Conroe. At this hardness level, mineral buildup accelerates water heater tank sediment accumulation (shortening service life to 7–9 years vs. the 10–12-year national average), clogs showerheads and aerators, and degrades appliance valves and supply line fittings. A whole-house water softener ($800–$2,000 installed) or point-of-entry filter system is a cost-effective long-term investment that also qualifies as a component of the 25C credit in some configurations.

What should I do if my plumbing was damaged during a hurricane or flood?

After any flooding event affecting your home's plumbing: 1. Do not use gas appliances until a licensed technician inspects gas lines for water intrusion and corrosion 2. Replace your water heater if it was submerged — submersion voids the warranty and contaminates the tank 3. Request a sewer camera inspection — flood events can displace or collapse sewer laterals, especially in Meyerland, Braeswood, Lawndale, and Kingwood with older clay or concrete pipe

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Houston Pipe & Drain 24

2682 Main Street, Houston, TX

Professional plumbing services including emergency repair, drain cleaning, and preventive maintenance. Transparent pricing and fast respo¦