Plumbing contractors typically need general liability with completed operations, workers compensation, commercial auto, and tools coverage, with attention to water-damage and, for some work, mold and pollution exclusions. Commercial and property-manager jobs usually require certificates and additional insured status.
Why water damage defines the risk
Plumbing failures cause some of the most expensive property-damage claims in the trades, and they often appear after the work is done and in spaces full of finishes and contents. Completed operations coverage is essential, and the policy's treatment of water damage, mold, and fungi matters, since some forms limit or exclude them. Knowing where those limits sit is the difference between a covered loss and a denied one.
The coverage stack
General liability with products and completed operations is the foundation. Workers compensation covers plumbers and helpers, and class codes plus sub or helper payroll should be reviewed for the audit. Commercial auto covers service trucks, and tools and equipment covers drain machines, cameras, and gear. Excavation or sewer work can raise pollution and subsidence considerations worth reviewing.
Contracts and certificates
Property managers, general contractors, and commercial sites routinely require a certificate of insurance and additional insured status before you start. The endorsement behind the certificate is what actually protects them, and contracts may also ask for a waiver of subrogation or primary and noncontributory wording. We confirm the policy delivers what the contract requires.
How we handle it
We make sure completed operations is included and review how the policy treats water damage and mold. We check class codes and payroll so the workers comp audit is clean. We add the certificate, additional insured, and waiver wording your jobs require. And we flag pollution or excavation exposures that need attention for sewer and underground work.
