Water Heater permit in Nashville, TN
Yes — you need a permit for water heater work in Nashville.
Replacing or moving a water heater needs a permit. Metro requires a plumbing permit before you install any plumbing device, appliance, or fixture, and a gas/mechanical permit covers a gas water heater. The state exemption for plumbing only covers stopping leaks and clearing stoppages, not swapping out a water heater.
| Permit needed? | Yes |
|---|---|
| Where the line falls | Replacing or moving a water heater needs a permit. Metro … |
| Fee | Gas/mechanical permit fees are set by appliance class in 16.16.400; a water heater or circulation tank is one of the listed appliances. The permit is not valid until the fee is paid. |
| Review time | Not in the ordinance |
| Code section | 16.16.330, with plumbing permits in 16.12.150 |
| Based on | Metro Nashville Code Title 16 (gas/mechanical and plumbing), 2024 IRC as amended |
How to pull the permit
- Put together a site plan showing where the work goes, with dimensions.
- Apply through the Nashville building department.
- Pay the permit fee when the permit is issued. Work done before that isn't covered.
- Book each inspection listed on the permit as the job reaches that stage.
Your contractor pulls this one, not you. Ask to see the permit before work starts.
If you skip it
Nashville's code doesn't set a specific fine for this work. In practice the department can issue a stop-work order, and unpermitted work tends to surface during a sale, when the buyer's inspector or the title company asks for it.
Nearby cities, same job
Rules stop at the city line. If your lot is near a boundary, or you work across several towns, this is where they differ.
| City | Distance | Permit? | Where the line falls |
|---|---|---|---|
| Nashville | — | Yes | Replacing or moving a water heater needs a permit. Metro … |
| Hendersonville | 14 mi | Yes | No size threshold in the code |
| Franklin | 18 mi | Yes | No size threshold in the code |
| Smyrna | 20 mi | Yes | Replacing or relocating a water heater needs a permit. It… |
| Gallatin | 23 mi | Yes | No size threshold in the code |
| Clarksville | 41 mi | Yes | No size threshold in the code |
Other work in Nashville
Questions people ask
How much does a water heater permit cost in Nashville?
Gas/mechanical permit fees are set by appliance class in 16.16.400; a water heater or circulation tank is one of the listed appliances. The permit is not valid until the fee is paid.. Valuation-based fees mean the number depends on what the job is worth, so the department quotes it when you apply.
I already built it without a permit. What now?
Nashville can issue a stop-work order and require you to apply after the fact, sometimes with an extra fee. Work that was covered up may have to be opened for inspection. Full walkthrough here.
Does unpermitted work cause problems when selling the house?
Often, yes. A buyer's inspector or the title company may flag it, and lenders can balk at financing a home with open or missing permits. What to do about it.
Do I pull the permit or does my contractor?
Your contractor does. A licensed contractor pulling their own permit is the normal arrangement — if one asks you to pull it in your name, treat that as a warning sign, because it moves the liability to you.