One name, two villages, two sets of answers
The Census Bureau records this place as Westbury village and Old Westbury village separately, and the county and state lists a buyer meets keep that separation. On one of them the two entries say opposite things. Current census geography puts Westbury village wholly within the Town of North Hempstead. A mailing address is not a jurisdiction, though: the shape the post office serves and the boundary the village governs are drawn for different purposes, so settle which government covers an exact address before ordering anything.
The word village there is doing practical work. Westbury is incorporated, and the federal flood program lists it separately as Westbury, Village of. As a general rule in this state, a city, town, village or county administers and enforces the building codes inside its own jurisdiction (building standards and codes). The application, the sign-off and any enforcement history for a house inside the line therefore stay with the village, and North Hempstead contains the place on the census map without reviewing the work.
The state's Long Island Rail Road station dataset carries Westbury on the Port Jefferson Branch, station code WBY, fare zone 7, accessibility marked full (rail station points).
Two names one letter apart, two different rows
Nassau County's community table of sewer authorities gives Westbury a row of its own and assigns it to the Nassau County Department of Public Works, with no collection-district footnote beside it, and Westbury does not appear among the 34 communities the same table flags as Not Publicly Sewered (sewer districts by community). Old Westbury does appear on that list. One document, adjacent names, opposite answers.
Read the row for its scope. The file is undated on its face and the host supplies no modification time, so take it as a listing whose currency cannot be established. Its unit is the community too: a house inside a sewered community may still have an old cesspool in the yard, never properly abandoned when the street main went in. Pull the parcel on the county Land Records Viewer and get the connection confirmed in writing.
Sitting inside a district also closes a door. The county's SEPTIC program, worth up to $20,000 toward a nitrogen-reducing system, is written for properties on a septic system or cesspool rather than connected to a sewer or located in a district (grant conditions). One opening survives, for a district property that cannot connect “due to site constraints documented by the Sewer District in question”.
Water arrives from a district office on Drexel Avenue
Westbury Water District sits on the state health department's Nassau contact list under identifier NY2902856, with 20,500 people served and an address at 160 Drexel Avenue (Nassau water system contacts). A separate entry, NY2902843, serving 4,700, belongs to Old Westbury's village system. Service boundaries are not published, so a house's own bills decide its supplier, and the district is not the village government: water and permits sit at different counters.
What the federal flood record says, and what it cannot
FEMA's Community Status Book for New York lists Westbury, Village of under CID 361644#, initial FIRM 04/02/97, entered the regular program 05/28/09 (community status book). Where a current effective map date would sit, the row carries the marker (NSFHA), which the report's own legend expands as “No Special Flood Hazard Area - All Zone C”. No Community Rating System entry, class or discount appears, so no flood insurance premium reduction attaches to this community. Old Westbury holds a separate CID, 361639#.
That is an administrative record about a federal program, not a finding about ground, and the marker in the map-date cell hides when village mapping was last revised. Pull the panel for the address at the FEMA Map Service Center and read its letter carefully: the 0.2 percent annual chance floodplain is drawn inside Zone X, so a C or an X settles nothing about exposure.
5,352 units, and most of them predate 1960
The 2020-2024 American Community Survey counts 5,352 housing units in the village. Roughly 69 percent of them, 3,699 units, date from 1959 or earlier, 2,033 of those from the 1950s, and roughly 85 percent, 4,534 units, predate 1980 (table B25034). By structure the count is 3,791 single-family detached, 508 in two-family buildings and 492 in buildings of 50 units or more (table B25024). Of 5,282 occupied units, 4,152 are owner-occupied (table B25003). Heating fuel splits 3,334 on utility gas and 1,403, roughly 27 percent, on fuel oil (table B25040). All survey estimates, each with a margin of error.
A stock weighted that far toward the 1950s and earlier is one where service equipment has been renewed in place by different hands. A partial repipe that stops at the first reachable fitting, and electrical capacity added in layers around an early panel, are ordinary findings in housing of this age.
One form the buyer should already be holding
A New York seller who fails to deliver a completed condition disclosure statement owes the buyer a $500 credit at closing under the form's own terms. Where it does arrive, item 14 asks whether a fuel storage tank stands above or below ground and whether any has ever leaked, and item 28 does the same job for the wastewater arrangement, its age and the date it was last pumped (form DOS-1614-f).
An oil tank question, and the agency the state names for this county
With 1,403 occupied units reporting fuel oil, an oil tank is worth asking about early. The state environmental agency writes that “Most home heating oil tanks are not regulated by New York State's Petroleum Bulk Storage (PBS) regulations because they have a capacity of less than 1,100 gallons,” and then names Nassau among three delegated counties whose own regulations may apply anyway, encouraging a homeowner there to ask the county health agency (homeowner's guide to underground tanks). The statewide exemption does not settle it in Nassau.
The same guide warns that a homeowner's policy containing a “pollution exclusion” clause can leave the owner holding the cleanup bill. Ask to see closure paperwork rather than an assurance.