Best Plumbing in Dallas, TX — 78 Vetted Contractors

Yes. The City of Dallas requires a permit for water heater replacements, including both tank and tankless units. Your licensed plumber should pull this permit before starting work — it's included in the job cost and triggers a city inspection after installation. Per the Dallas Development Services Department, unpermitted water heater installations can create issues when you sell your home or file an insurance claim. If a contractor tells you a permit isn't necessary for a water heater swap in Dallas, that's a red flag.

The most common signs in Dallas homes are: a water bill that's suddenly 20–40% higher with no change in usage, warm or hot spots on tile or hardwood floors (indicating a hot-water line leak), the sound of running water when all fixtures are off, and cracks appearing in interior walls or floors. Because Dallas sits on expansive clay, some floor movement is normal — but combine that with any of the above and you should call for an electronic leak detection inspection. Detection typically costs $300–$600 and is worth it before any repair decisions are made.

Go to tsbpe.texas.gov and use the license lookup tool. You can search by name, company name, or license number. Per the Texas State Board of Plumbing Examiners, every plumbing company operating in Texas must have a licensed Master Plumber as its responsible party, and field workers must hold at least a Journeyman license. This lookup is free, takes under a minute, and tells you whether the license is current or has any disciplinary history. Do this before you sign any contract.

Cast-iron drain lines in Dallas homes typically last 50–75 years under normal conditions, but Dallas's hard water and soil movement accelerate corrosion. Homes built before 1970 in neighborhoods like Lakewood, Oak Cliff, and the M Streets are at the highest risk. The failure mode is gradual — internal corrosion reduces pipe diameter and eventually causes chronic backups or collapse. A plumbing camera inspection ($150–$300) is the only reliable way to assess condition. If you're buying an older Dallas home, make this part of your inspection process.

Yes, Dallas water is moderately to highly hard. Dallas Water Utilities reports average hardness in the 150–200 mg/L range (approximately 9–12 grains per gallon), which is well above the 'soft' threshold of 60 mg/L. Over time, this causes mineral scale buildup inside water heaters, on faucet aerators, and inside appliance supply lines. Practical steps: flush your water heater annually, replace aerators every 1–2 years, and consider a whole-house water softener if you're seeing significant scale. Ask your plumber about softener sizing — Dallas homes typically need 32,000–48,000 grain capacity units.

Full repiping in Dallas typically runs $4,000–$12,000 for a standard single-family home, depending on square footage, number of bathrooms, accessibility, and material choice. PEX (cross-linked polyethylene) has largely replaced copper for Dallas repiping jobs because it handles soil movement better and costs less. A 1,500 sq ft, two-bath home might run $4,500–$7,000 in PEX; a larger home with complex routing or copper preference will be at the higher end. Always get 2–3 itemized quotes and confirm the permit is included — Dallas requires one for full repiping work.

First, locate your main water shutoff and turn it off immediately — in most Dallas homes it's near the street at the meter or inside near the water heater. Then call a licensed plumber; during freeze events, wait times can stretch 24–48 hours as demand spikes. Document all damage with photos before any cleanup for insurance purposes. Per post-Uri guidance from TSBPE, Texas plumbers are now expected to advise on pipe insulation and freeze protection upgrades as part of any repair. Ask about insulating exposed pipes in your attic and garage as part of the repair scope.

Yes, in a limited way. Dallas Water Utilities has historically offered rebates for WaterSense-certified toilets and high-efficiency irrigation controllers through its conservation program — check dwu.dallas.gov for current offerings, as programs change annually. Oncor, the local electric utility, occasionally offers rebates on heat-pump water heaters, which are increasingly installed by Dallas plumbers as an energy-efficient alternative. Federal tax credits under the Inflation Reduction Act (through 2032) also apply to qualifying heat-pump water heaters — ask your plumber or a tax advisor whether your installation qualifies.