Bathroom Remodeling in Huntington, NY

Huntington requires plans sealed by a licensed architect or professional engineer for any alteration over ten thousand dollars. Full bathroom remodels here regularly pass that, so unlike most towns the professional fees are a line item to plan from day one rather than an afterthought.

What we see in Huntington bathrooms

Huntington requires plans sealed by a licensed architect or professional engineer for any alteration over ten thousand dollars. Full bathroom remodels here regularly pass that, which makes Huntington one of the few towns where the professional fees are a real line item on a bathroom rather than an afterthought.

There is a useful corollary: if the bathroom stays finish work — tile and fixtures in place, nothing moving — no permit is required and the threshold never applies. In this town more than any other, whether the toilet moves is a financial decision as well as a layout one.

What needs a permit in Huntington

Vanity swap, retiling, new fixtures in the same places — finish work, generally no permit. Toilet or shower drain moves, tub converts to a walk-in shower, a bathroom gets added, or a bathroom goes in a basement — permitted work, every time.

The Suffolk catch: adding a bathroom to a house on septic rather than sewer can trigger a Suffolk County Health Services review, because the system was sized for a set number of fixtures. It runs separately from the town permit, on its own timeline. Redoing an existing bathroom does not raise it. Filing detail for Huntington Building & Housing Department.

Four things decide whether a bathroom lasts, and none of them are the tile: the subfloor, the venting on a moved toilet, the waterproofing membrane behind the tile, and where the exhaust fan actually terminates. What to ask about each. We measure on site for free and put the number in writing as a scope with a total.

Verified August 2026. Requirements and fees change and each department publishes independently. Confirm anything here with the Huntington Building & Housing Department at (631) 351-3000 before you order materials or sign a contract. Town Hall, 100 Main Street, Huntington, NY 11743, Room 115.

Also serving, near Huntington

We are based in East Patchogue and work across Suffolk County. If you are inside an incorporated village, the village building department governs rather than the town.

• Patchogue
• Medford
• Islip
• Bay Shore
• Smithtown

If your town is not on the list, call anyway — the list is where we work most, not a boundary. Anything from Nassau through the Twin Forks is fair game; we tell you honestly if travel makes a small job uneconomical.

Frequently Asked Questions

Do I need an architect for a bathroom remodel in Huntington?
If the work needs a permit and costs more than ten thousand dollars, yes. Huntington requires plans sealed by a licensed architect or professional engineer above that threshold, and full bathroom remodels frequently pass it. If the bathroom stays finish work with nothing moving, no permit is required and the threshold does not apply at all.

Do I need a permit for a bathroom remodel in Huntington?
Replacing a vanity, retiling or swapping fixtures in the same locations is generally finish work and needs no building permit. Moving the toilet or shower drain, converting a tub to a walk-in shower, or adding a bathroom is permitted work. There is far more plumbing in a bathroom than a kitchen, so that line gets crossed more often.

Does adding a bathroom in Suffolk County need Health Department approval?
It can. If the house is on a septic system rather than sewer, adding a bathroom may trigger review by Suffolk County Department of Health Services, because the system was sized for a set number of bedrooms and fixtures. That review is separate from the town building permit. Redoing an existing bathroom does not raise it.

Is tile waterproof?
No. Tile is not waterproof; the membrane behind it is. Ask specifically what waterproofing goes in behind the tile, because it is the part you never see and the only part that decides whether the wall lasts.

Related Reading

• Bathroom permits by town — the full breakdown
• Bathroom remodel cost — 2026 Long Island numbers
• Walk-in showers — the conversion that needs a permit
• Septic and Suffolk projects — when SCDHS gets involved
• Bathroom remodeling in Suffolk — local considerations