Find a pro in North Hempstead
Find a licensed basement waterproofing company in North Hempstead, NY
Who licenses basement waterproofing companies in North Hempstead
- Nassau's Administrative Code names waterproofing as home improvement work, and no one may run a home improvement business in the county without a license.
- Waterproofing is on Nassau County Consumer Affairs' list of who must be licensed.
State rules and the lookup steps: how to check a basement waterproofing company's license.
What the Town of North Hempstead requires
- The Town requires a permit to finish a basement or attic.
- The Town's code summary states that no one may live in the basement of a house.
The Department of Building, Safety, Inspection and Enforcement handles permits (516-869-7660). Our Town of North Hempstead permit guide covers how to apply, inspections and certificates.
Homes in North Hempstead: what the Census shows
Across the Town of North Hempstead, villages included, the median home was built in 1955, and 64% of homes were built before 1960, 21% before 1940. 80% of homes here are owner-occupied, and 71% 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 North Hempstead
- 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 Department of Building, Safety, Inspection and Enforcement, 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?
More for North Hempstead
- All trades in North Hempstead
- Town of North Hempstead permit guide
- Plumbing in North Hempstead
- Fences and decks in North Hempstead
- Junk removal and demolition in North Hempstead
- Driveways, pavers and masonry in North Hempstead
- Tree service in North Hempstead
- Sewer and drain lines in North Hempstead
- EV chargers in North Hempstead
- Sheds in North Hempstead
Basement waterproofing across Long Island
- Basement Waterproofing on Long Island
- How to check a basement waterproofing company's license
- Basement waterproofing cost on Long Island
- Basement waterproofing in Hempstead
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Planning guides
Questions homeowners ask
Does a basement waterproofing company need a license in North Hempstead, NY?
Nassau requires a county home improvement license for waterproofing work, which the Administrative Code names as home improvement. Nassau Consumer Affairs requires waterproofing contractors to be licensed.
What does the Town of North Hempstead require for basement waterproofing?
Finishing a basement in North Hempstead requires a Town permit. North Hempstead's code summary bars anyone from living in a home's basement.
How do I check a basement waterproofing company's license in Nassau County?
Nassau's Valid Business License Search takes a waterproofing company's name or license number.
How much does a basement waterproofing company cost in North Hempstead?
No public agency prices basement waterproofing job by job. The price comes from written estimates after a licensed pro sees the job. For context, 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.
How old are the homes in North Hempstead, NY?
The median home in the Town of North Hempstead was built in 1955, and 64% were built before 1960, according to Census Bureau estimates for 2020-2024.
Sources
Every fact on this page comes from these official pages. Rules and fees change, so confirm with the office before you file anything.
- Nassau County, Administrative Code (PDF) (read 2026-11-03; page dated January 1, 2026)
- Nassau County Consumer Affairs, Who Must Be Licensed? (read 2026-11-03)
- Town of North Hempstead, Code Enforcement (read 2026-11-03)
- U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates: year built, heating fuel, tenure, units and value (North Hempstead town) (read 2026-11-03)
- New York State Department of Labor, Occupational Wages (Long Island region, wages updated to the first quarter of 2026) (read 2026-11-03)
Checked 2026-11-03. Facts come only from the official pages listed, read on that date.
Talk the job through before you call anyone
Tell us about the house and the job in about four minutes. Revival calls you, free, to go over the scope, the budget, the timing and your town's permit office. Contractor matches open as our first licensed partners sign.