Verified Plumbing Contractors

Why verified plumbers matter

Plumbing work touches potable water, sanitation, and — in the case of gas lines — public safety. Every state requires licensed plumbers for permitted work, and failing to use a licensed contractor can void homeowner insurance and create significant liability. For commercial projects, unlicensed plumbing is a code violation that can result in failed inspections and costly rework.

Hard Hat Social verifies state plumber licenses, checks insurance certificates, and confirms authorization to work in the contractor's jurisdiction before approving any profile. Specialties include commercial and residential plumbing, pipefitting, fire suppression, and gas line installation.

Gas line work in particular requires specific endorsements or separate licensing in many states. Contractors who list gas lines as a specialty are verified for that scope specifically.

Plumbing specialties on the platform

Credentials we verify

• ✓State Plumber License — journeyman or master plumber license, verified
• ✓General Liability Insurance — current certificate required