40 Underhill Boulevard, Syosset, NY 11791 Property Information
40 Underhill Boulevard, Syosset, NY 11791 Property Information
- General
- Owner
- Documents
- Tax
- Permits
- Neighborhood
Address
| Primary address | 40 Underhill Boulevard, Syosset |
| Zip code | 11791 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | None (unincorporated town) |
| Parcel ID | 15-13-99 |
Sales & Tax Overview for 40 Underhill Boulevard, Syosset
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 01/13/2025 |
| Sale price | $2,100,000 |
| Arm's length | Register |
| Current property tax | $98,703 |
Lot & Building Information for 40 Underhill Boulevard, Syosset
| Building sqft | 13,113 |
| Building class | Office Building (464.14) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.259 |
| Buildings on lot | 1 |
| Year built | 1964 |
| Stories | 1 |
Zoning, Use & Area Overview
| Zoning district | Register (See more on map) |
| Capitalization rate | Register |
| Street | Paved |
| Traffic | Medium |
| Area type | Commercial/Industrial park |
| School district | Syosset |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Commercial Buildings
| Square footage | Structure | Grade | Year built | Stories |
|---|---|---|---|---|
| 13,113 | Office bldg lr 1-3s | B | 1964 | 1 |
Floor Distribution
| Floors | Square footage | Use | Construction | Condition | Exterior wall | Heating | Air conditioning | Plumbing |
|---|---|---|---|---|---|---|---|---|
| B1-B1 | 4,371 | Offices | Register | Register | Register | Register | Register | |
| 01-01 | 4,371 | Offices | Register | Register | Register | Register | Central | Register |
| 02-02 | 4,371 | Offices | Register | Register | Register | Register | Central | Register |
Find the size and usage for each floor in the building, plus corresponding details on construction type, physical condition, heating, and plumbing.
Income and Expenses
Check out a breakdown by type of rentable square feet and the rent charged for each, including detailed info on expenses, gross/net income, income and expense rate.
Other Property Data for 40 Underhill Boulevard, Syosset
Property reports include comprehensive occupancy, improvement and development information (where available).
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- • Improvements for 40 Underhill Boulevard, Syosset , including their type, square footage, grade and when they were built.
- • Development maps such as planimetric, zoning, land use and urban landscape maps (building age and stories).
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About 40 Underhill Boulevard, Syosset
This Office Building (464.14) located at 40 Underhill Boulevard, Syosset, NY 11791 has a total of 13,113 square feet and a current price per square foot of $160.
What is the year built & the current market value of 40 Underhill Boulevard, Syosset, NY 11791?40 Underhill Boulevard, Syosset, NY 11791 was built in 1964 and has a current tax assessor's market value of $2,109,600.
Ownership Information
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Past Sales & Property History for 40 Underhill Boulevard, Syosset
Create a free account to view the complete sales history for 40 Underhill Boulevard, Syosset, including title documents, transfer conditions, mortgages and liens.
| Purchase date | Purchase price | Buyer name | Seller name |
|---|---|---|---|
| 01/13/2025 | $2,100,000 | Register | Register |
Title Documents for 40 Underhill Boulevard, Syosset
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
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R: Recorded date
D: Document date
Property Taxes for 40 Underhill Boulevard, Syosset
Access detailed property tax data for 40 Underhill Boulevard, Syosset, NY 11791. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $153,299 |
| Current property tax | $98,704 |
| Tax class | Register |
| Market value | $2,109,600 |
| Assessed value | $21,096 |
| Transitional assessed value | Register |
Assessment History for 40 Underhill Boulevard, Syosset
Here's the assessment & property tax history for 40 Underhill Boulevard, Syosset, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|---|
| 2026 | $2,109,600 | $21,096 | 726.671 | $153,299 | +84.47% |
| 2025 | $1,170,500 | $11,705 | 709.962 | $83,101 | -5.51% |
| 2024 | $2,109,655 | $12,831 | 685.445 | $87,949 | -12.20% |
| 2023 | $1,365,600 | $13,656 | 733.485 | $100,165 | -37.15% |
| 2022 | $2,109,600 | $21,096 | 755.439 | $159,367 | +0.38% |
Permits for 40 Underhill Boulevard, Syosset
The complete history of permits filed for 40 Underhill Boulevard, Syosset, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Data not available for this property.
Demographics by Zip Code
| Total population | 25,520 |
| Median age | 43.2 |
| Average household income | $276,174 |
| Family households | 83.9% |
| Occupied housing units | 8,113 |
| Owner occupied units | 93.5% |
| People per household (average) | 3.11 |
| Median year structure built | 1959 |
| Median value for units with a mortgage | $968,800 |
| Median value for units without a mortgage | $878,600 |
Risk
Create a free account to unlock extended information for 40 Underhill Boulevard, Syosset, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
Transportation
Access the detailed traffic volume map for 40 Underhill Boulevard, Syosset to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
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Neighbors for 40 Underhill Boulevard, Syosset
Here are the neighbors for 40 Underhill Boulevard, Syosset.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 108-114 Jackson Ave, Syosset | 11,410 | 09/24/2007 | $826,000 |
| 47 Roosevelt Ave, Syosset | 1,541 | 03/25/2024 | |
| 35 Roosevelt Ave, Syosset | 2,848 | 08/03/2001 | $540,000 |
| 24 Willis Ave, Syosset | 798 | 05/09/2011 | |
| 47 Railroad Ave, Syosset | 1,704 | 10/28/2005 | |
| 41 Roosevelt Ave, Syosset | 2,884 | 04/23/2025 | |
| 36 Willis Ave, Syosset | 04/27/2010 | $375,000 | |
| 22 Willis Ave, Syosset | 1,680 | 03/21/2014 | |
| 10 Treadwell St, Syosset | 2,054 | ||
| 18 Tredwell Ave, Syosset | 1,888 | 08/14/2023 | |
| 50 Underhill Blvd, Syosset | 12,630 | 11/30/2018 | $1,900,000 |
| 55 Roosevelt Ave, Syosset | 1,467 | 07/10/1992 | |
| 43 Roosevelt Ave, Syosset | 3,080 | 04/27/2023 | $1,249,000 |
| 30 Underhill Blvd, Syosset | 1,566 | 01/15/2026 | $1,540,000 |
| 30 Willis Ave, Syosset | 874 | 05/24/2018 | $400,000 |
| 16 Willis Ave, Syosset | 860 | ||
| 12 Tredwell Ave, Syosset | 2,054 | 08/22/2019 | $635,000 |
| 28 Treadwell Ave, Syosset | 1,224 | 03/02/2026 | $760,000 |
| 19 Richmond St, Syosset | 3,090 | 01/25/2007 | $514,100 |
| 59 Roosevelt Ave, Syosset | 2,288 | 08/11/1997 |