New Jersey's plumbing permit rule, and the short list of jobs outside it

The rules are state rules, and your town's construction office applies them. Four questions matter here: what requires a permit, what counts as ordinary maintenance, who may do the work, and what goes on the application. This story uses the state's wording where we could.

Which jobs need no permit?

Those on the state's ordinary plumbing maintenance list need none. Section 5:23-2.7 spells it out, and the conditions in the right column below are part of the rule.

The list is narrower than it first looks. Moving a sink, adding a bathroom or changing the piping behind a fixture falls outside it. So does anything else not named, so when in doubt, ask before you open the wall.

Is a water heater swap on that list?

No, so do not treat it as permit-free. Water heater replacement does not appear on the state's plumbing maintenance list. Ask your construction office before the old one comes out. On a raised house, ask as well about location, which our story on water heater placement covers.

What happens when a pipe bursts at night?

Close your own main valve if it sits somewhere dry, stay out of water near electrical gear, and call a licensed plumber. The paperwork comes after. Section 5:23-2.14 makes room for emergency work: give notice as soon as practicable and apply within 72 hours. Many leak repairs are on the ordinary list anyway and need no permit at all.

The same section sets a middle category. Minor work still requires a permit but may start on notice, so ask your office whether your job qualifies.

Can a homeowner do the work without a license?

Yes, on a narrow footing. Section 5:23-2.15 says plumbing work "shall not be undertaken except by persons licensed to perform such work pursuant to law," with one exception: the "single-family homeowner on his or her own dwelling."

Rental units, condominiums or a relative's house are questions to take to the office before assuming anything. So is whether you must personally do the work, since the state text gives only that exception. It concerns who may do the job, so ask your office what permit steps still apply.

What goes on the permit application?

The name and license number of the plumbing contractor go on it, and the licensed contractor's seal and signature go on the subcode form. If someone offers to pull a permit in your name so that a license need not appear, take that as a reason for caution. Our story on hiring has the questions to ask.

Are wells and septic systems handled the same way?

No. They run on separate rules through separate offices. Under the septic rule, "A person shall not construct, install, repair or alter" a septic system until the administrative authority has issued a permit, and that authority is the board of health or its agent; see who approves septic work. A new well needs sign-off from local health before the rig arrives and a test by a state-certified lab once it is finished, says a 2022 state health presentation. Connecting a house with a well to public water has a permit of its own, set out in our story on switching.

Flood zones add another layer. A FEMA advisory says plumbing fixtures are not allowed below base flood elevation, a point our story on what changed under raised houses takes up.