Plumber Insurance
Plumber Insurance in Texas
Water damage is the defining risk for a Texas plumbing contractor. A single failed joint behind a finished wall can cause more property damage than the entire job was worth, and the leak is often discovered weeks after you left the site. Insurance for a plumbing business has to be built around that reality — water-damage class codes, mold coverage, and completed-operations tails that protect you when the call comes months later. This page explains what Texas plumbers need, what GCs and Master Plumber permit offices require, and how to structure coverage that holds up when a leak claim hits.
The Exposures That Define Plumbing Work
Plumbing is a high-frequency, high-severity property-damage trade. Pressurized water systems, gas connections, drain lines, and backflow preventers all carry the risk of a small workmanship error producing outsized damage. A crossed thread on a supply line, a failed solvent weld, or a backflow preventer that fails a contamination test can each generate a claim many times the job value. Texas expansive clay soil also moves under-slab plumbing, producing slab leaks that surface long after rough-in. Your insurance has to anticipate the latent-defect and water-damage claims that define the trade.
General Liability for Plumbers
General liability for a Texas plumber centers on water damage and completed operations. Standard limits start at $1M per occurrence and $2M aggregate for residential work; commercial plumbing and new-construction rough-in often require $2M per occurrence. The policy must include products and completed operations coverage with a tail long enough to reach the second and third year, when slow leaks behind walls typically surface. Verify the policy covers resulting water damage to the customer's property even when the cause is your workmanship, and confirm it does not carry a full mold exclusion — a common trap on generic contractor policies that leaves the largest plumbing claim uninsured.
Mold and Backflow Coverage
Most plumbing GL policies cap or exclude mold remediation. Because a slow leak that produces mold can multiply a claim several times over, buy back mold coverage rather than accept a full exclusion. If you install or test backflow preventers, confirm the policy does not exclude backflow testing — contamination claims from a failed preventer are severe and some carriers exclude the work entirely. Carrying a TSBPE Backflow Prevention Assembly Tester registration is required to perform the work legally, and unregistered backflow testing is an uninsurable claim.
Workers' Comp for Plumbing Crews
Plumbers lift heavy pipe, work in crawlspaces and under-slab trenches, and handle tools in confined spaces. Back injuries, lacerations, and trench-related claims dominate plumbing workers' comp. Texas does not require workers' comp for private employers, but every commercial GC and most production homebuilders require a plumbing sub to show a workers' comp certificate before mobilization, and a single trench-collapse claim without coverage is a fatal financial event. Sole proprietors can often exclude themselves, but working owners who rough in pipe face the same trench and lifting exposures as their crews.
Licensing and Permits
The Texas State Board of Plumbing Examiners (TSBPE) licenses Tradesman, Journeyman, and Master Plumbers, and a plumbing business must designate a responsible Master Plumber to pull permits. Most Texas cities require a licensed Master Plumber and proof of GL insurance (commonly $300K–$1M) before issuing a plumbing permit. Permitted, inspected work also strengthens your completed-operations defense. Keep your TSBPE licenses, backflow tester registration, city permits, and inspection records on file.
What GCs Require from a Plumbing Sub
- General Liability at $1M/$2M minimum (commercial: $2M/$2M)
- Additional Insured via CG 20 10 and CG 20 37 (completed operations for water-damage claims)
- Waiver of subrogation and primary/non-contributory wording
- Completed operations and water-damage coverage without a full mold exclusion
- Workers' comp with employer liability and waiver of subrogation
- Certificate delivered before mobilization
Frequently Asked Questions
Why does a Texas plumber need completed-operations coverage?
A leak behind a wall is usually discovered weeks or months after rough-in is finished, which makes it a completed-operations claim rather than an operations claim. Without products and completed operations coverage — and a tail long enough to reach the second or third year — your GL will not respond to the exact claim type that defines plumbing work.
Does general liability cover mold from a plumbing leak?
Only if the policy includes mold coverage. Many generic contractor GL policies cap or exclude mold remediation, and a slow leak that produces mold can multiply the claim several times over. We buy back mold coverage rather than accept a full exclusion, because the largest plumbing claims involve water damage that produced mold.
Does a sole-proprietor plumber need workers' comp in Texas?
Texas does not require it, but commercial GCs and production homebuilders almost always require a workers' comp certificate before a plumbing sub mobilizes. A sole proprietor can often exclude themselves from coverage to lower premium while still satisfying the contract requirement, but an excluded owner has no wage-loss or medical coverage for their own trench or lifting injury.
What is the TDLR insurance minimum for plumbers?
Plumbing is licensed by the Texas State Board of Plumbing Examiners, which does not set a specific GL minimum at the state level. The limits that matter are the ones your GCs and cities require — typically $1M/$2M for commercial work and $300K–$1M to pull a city plumbing permit. Carry contract limits, not just the permit floor.
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