Find a licensed water heater installer in Oyster Bay, NY

Who licenses water heater installers in Oyster Bay

• Nassau's cities, towns and villages, not the county, license the plumbers who install water heaters there, according to county Consumer Affairs.
• The Town requires every plumber who works in the Town to hold a Town of Oyster Bay license. Its Plumbers Examining Board is a chairman and four members, all master plumbers appointed by the Town Board.

State rules and the lookup steps: how to check a water heater installer's license.

What the Town of Oyster Bay requires

• Installing a new water heater in the Town takes a Town-licensed plumber, whose signed and notarized information goes on page two of the permit application.
• When a water heater changes fuel type, the Town's heating units checklist calls for a Town-licensed electrician's signed and notarized information on the application.
• Hot water heaters, new or changing fuel type, can be permitted online through the Town's Building Division Portal as heating units.

The Town of Oyster Bay Building Division handles permits ((516) 624-6200 ext. 1). Our Town of Oyster Bay permit guide covers how to apply, inspections and certificates.

Homes in Oyster Bay: what the Census shows

Across the Town of Oyster Bay, villages included, the median home was built in 1957, and 63% of homes were built before 1960, 10% before 1940. 89% of homes here are owner-occupied, and 86% are single-family detached houses.

What water heater replacement costs here

Labor is a large part of any price. Long Island plumbers, pipefitters and steamfitters earn a median $80,988 a year, from about $55,904 at entry level to $110,956 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.) Prices come from written estimates; more in the water heaters cost guide.

Before you hire in Oyster Bay

• Ask for the license number the work needs here (see who licenses water heater installers above), and check it before you sign.
• Ask who files with the Town of Oyster Bay Building Division, and who books the inspections.
• What size and type fits the house, and how is it vented?
• Is the expansion tank, the relief valve and the drain pan included?