Do you need a permit to replace a water heater in Virginia?

The short version

Virginia has one building code for the whole state, the Uniform Statewide Building Code, and every city and county building department enforces it. Under it, a permit is needed before work starts on any equipment the code regulates, and on the water supply and distribution system.^[1] A water heater is both.

The code then lists work that needs no permit. For a water heater, the entry that matters is replacing mechanical appliances that are not fueled by gas or oil, in single-family homes and similar dwellings.^[1] That is why the answer splits by fuel.

Gas or oil: get the permit

A gas or oil-fired water heater is outside that exemption, so replacing one needs a permit. Fairfax County puts it plainly: any gas appliance installation or replacement, including a water heater, needs a permit even when it is like for like.^[2] If the job adds new gas piping, Fairfax asks for a residential plumbing permit instead of an appliance permit.^[2] Other counties name their permits differently, but the rule underneath is the same statewide code.

Electric: ask your building department

An electric tank in a house may fall inside the exemption, and two other entries can also apply: replacing plumbing fixtures without altering the water supply, drainage or vent systems, and other repair work the building official deems minor and ordinary.^[1] Whether your swap counts is the local building official's call, and localities differ. Moving the heater, changing its size or type, going tankless, or adding a heat pump unit can change the answer, so describe the job exactly when you call.

Two things make the call easy:

• If you ask for a permit for exempt work, the building official has to issue one and inspect it.^[1] An inspection is cheap insurance on an appliance that holds hot water under pressure.
• When a water heater fails and has to be replaced at once, the code lets the permit application follow by the end of the first working day after the work starts.^[1] You do not have to go without hot water while you wait.

Let the plumber pull it

Virginia's Board for Contractors says the contractor should apply for and get any building permits the job needs, and to put that in the contract.^[3] Be wary of anyone who suggests you pull the permit yourself: whoever holds the permit takes on responsibility for the job as its general contractor.^[3]

Before you hire, check the plumber's licence on DPOR's record, and make sure its specialty covers plumbing.

Find a plumber who will handle it

Loclis lists licensed businesses from Virginia's DPOR register. Browse plumbing repair, look up plumbers in Christiansburg or another town, or describe the job and local plumbers quote it. Ask each one whether the quote includes the permit and the inspection.