Water Heater Permit in Louisville, KY? Not Required (But Rules Apply)

Louisville/Jefferson County Metro Government does not require a permit for residential water heater replacement/installation.

Mandatory Requirements

• Installation by a licensed Kentucky plumber.
• Compliance with Kentucky State Plumbing Code and manufacturer specs.
• Proper venting (gas), TPR valve, drain pan, expansion tank (if required).
• Correct gas line sizing / electrical circuit.
• Safe, accessible location with clearance.

While no permit is pulled, the plumber must file a Notice of Installation with the county. Always hire a licensed pro—improper installs risk carbon monoxide, fire, floods, and insurance denial.