Find a licensed basement waterproofing company in Huntington, NY

Who licenses basement waterproofing companies in Huntington

• Waterproofing is named in Suffolk County's home improvement law, and the law makes a county license mandatory for the businesses it regulates, unless exempt.
• Basements and waterproofing both appear on Suffolk Consumer Affairs' list of home improvement work.
• Work in the electrical and plumbing fields is excluded from Suffolk's home improvement definition.
• A waterproofing contractor working without a license in Suffolk is subject to arrest and prosecution, Consumer Affairs warns.

State rules and the lookup steps: how to check a basement waterproofing company's license.

What the Town of Huntington requires

• An existing finished basement must have a certificate of occupancy, and the Town legalizes one through a Residential Building Permit to convert it to living space.
• Legalizing a finished basement takes as-built plans, drawn to scale by a design professional, draftsperson, architect or engineer, that show ceiling height, window and door sizes and locations, stairwells and egress, with all rooms labeled.
• Since July 16, 2019, the Town's Accessory Dwelling Unit Bureau has not accepted basement, cellar or attic apartment applications.
• For flood plain boundary questions tied to insuring a property, the Town directs owners to Maritime Services at (631) 351-3192 or Engineering Services at (631) 351-3120.

The Town of Huntington Building and Housing Division handles permits ((631) 351-2821). Our Town of Huntington permit guide covers how to apply, inspections and certificates.

Homes in Huntington: what the Census shows

Across the Town of Huntington, villages included, the median home was built in 1963, and 43% of homes were built before 1960, 11% before 1940. 89% of homes here are owner-occupied, and 84% are single-family detached houses.

What basement waterproofing costs here

Labor is a large part of any price. Long Island construction laborers earn a median $58,875 a year, from about $39,468 at entry level to $79,154 with experience. Cement masons and concrete finishers earn a median $65,026 a year, from about $53,234 at entry level to $82,344 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.) Prices come from written estimates; more in the basement waterproofing cost guide.

Before you hire in Huntington

• Ask for the license number the work needs here (see who licenses basement waterproofing companies above), and check it before you sign.
• Ask who files with the Town of Huntington Building and Housing Division, and who books the inspections.
• Where is the water coming from, in writing, before you sell me a system?
• Would grading, gutters or downspout extensions fix it for less?