Home Insurance in Old Westbury, New York
Old Westbury's median home value is $2,000,000+.
Aging wiring, roofing and plumbing in older homes can push up the cost to insure or rebuild them. The typical home in Old Westbury was built around 1969. About 38% of homes were built before 1960, about 29 points below Nassau County's 66%.
In Old Westbury, the housing stock is 98% single-family homes and 2% mobile or manufactured homes.
49% of owner-occupied homes in Old Westbury carry a mortgage, and mortgage lenders require hazard insurance for as long as the loan is active.
About 93% of occupied homes in Old Westbury are owner-occupied. The vacancy rate is 6%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy.
Homes heated with propane and fuel oil can carry added fire risk. Fuel-tank leaks and spills are often excluded from standard homeowners policies. In Old Westbury, 50% of homes are primarily heated with natural gas.
Nassau County had 40,437 active NFIP flood policies as of September 2026. Its top FEMA-rated hazard is winter weather (Very High). See the full Nassau County home insurance overview for all FEMA hazard ratings and flood coverage details.
In New York, the statewide average premium for a standard HO-3 homeowners policy is $1,801 per year (NAIC, 2023 data).
Key figures
| Median home value | $2,000,000+ |
|---|---|
| Median year built | 1969 |
| Owner-occupied share | 93% |
| Share of owner-occupied homes with a mortgage | 49% |
| Top county hazard | Winter Weather (Very High) |
| Active NFIP policies in Nassau County | 40,437 |
| Home insurance premium | $1,801 - statewide average (NAIC, 2023 data) |
Nearby towns
Sources
Data last updated: 2026-09-29
- U.S. Census Bureau Gazetteer Files (2024)
- U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates (2024)
- FEMA National Risk Index (December 2025)
- FEMA OpenFEMA NFIP Redacted Policies v3 (2026)
- NAIC Dwelling Fire, Homeowners Owner-Occupied, and Homeowners Tenant and Condominium/Cooperative Unit Owners Insurance: Data for 2023 (published 2026) (2023)