Nassau County  »  11791  »  Underhill Blvd  »  40 Underhill Blvd

40 Underhill Boulevard, Syosset, NY 11791 - Property report

Also known as: 40 Underhill Blvd

Property image for 40 Underhill Boulevard, Syosset, NY 11791
static Mapbox map

Property type

Office Building (464.14)

Year built

1964

Acreage

0.259

Sale price

$2,100,000

General information

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Address
Primary address
40 Underhill Boulevard
ZIP code
11791
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
15-13-99

Owner

Find out who owns 40 Underhill Boulevard, Syosset, NY 11791. Uncover corporate and individual owners with a free account.

Building
Property type
Office Building (464.14)
Building sq. ft.
13,113
Buildings on lot
1
Stories
1
Year built
1964
Sales
Sale date
01/13/2025
Sale price
$2,100,000
Arm's length
Tax
Tax year
2026
Current property tax
$98,704
Tax class
Zoning & Use
Zoning
Capitalization rate
Area type
Commercial/Industrial park
Lot
Acreage
0.259
Topography
Level
Land
Primary site

Area overview

Walk score
74 /100.  Very Walkable
Transit score
0 /100.  Minimal Transit
Bike score
56 /100.  Bikeable
School district
3012
Street
Paved
Traffic
Medium

View more such as transportation, nearby schools and risk designations.

Commercial Buildings

Sq. ft. Structure Grade Year built Stories
13,113 Office bldg lr 1-3s B 1964 1
Floor distribution
Floors Sq. ft. Use Construction Condition Exterior wall Heating Air conditioning Plumbing
B1-B1 4,371 Offices
01-01 4,371 Offices Central
02-02 4,371 Offices Central
Ownership

Ownership information for 40 Underhill Boulevard, Syosset, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 40 Underhill Boulevard, Syosset, NY 11791

Sale date Sale price Buyer name Seller name
01/13/2025 $2,100,000 XX XXXXXXXXX XXXX XXX XXXXXXX XXXXXX XXXXX XXX

*Most recent sale on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
01/22/2025 - R
01/13/2025 - D		 Deed
(Deed Commercial/Vacant Land)		 XXXXXXX XXXXXX XXXXX XXX XX XXXXXXXXX XXXX XXX
05/31/2001 - R
03/29/2001 - D		 Deed XXXXXX XXXXXX XXXXXXXXXX XXXXXXXXXXX XXXXXX XXXXXXX XXXXXX XXXXXXXXXX, XXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 40 Underhill Boulevard, Syosset, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2026
Current property tax
$98,704
Tax class
Base tax
$153,299
Recent tax assessments
Market value
$2,109,600
Assessed value
$21,096
Transitional assessed value

More about Nassau County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Market value Assessed value Tax rate Property tax Y-o-Y 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%
2021 $1,971,600 $19,716 805.271 $158,767 +115.73%
2020 $815,500 $8,155 902.474 $73,597 +5.49%
2019 $815,500 $8,155 855.481 $69,764 -2.34%
2018 $815,500 $8,155 876.01 $71,439 -2.51%
2017 $887,100 $8,871 826.063 $73,280 -1.96%
Permits

Permit information for 40 Underhill Boulevard, Syosset, NY

No recently recorded permits for this property.

Neighborhood

Demographics by ZIP code

Total population
25,520
Median age
43.2
Average household income
$276,174
Family households
83.9%
People per household (average)
3.11
Occupied housing units
8,113
Owner-occupied units
93.5%
Median year structure built
1959
Median value mortgaged units
$968,800
Median value unmortgaged units
$878,600

Risk

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FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
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Access the detailed traffic volume map for 40 Underhill Boulevard, Syosset, NY 11791 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Neighbors for 40 Underhill Boulevard, Syosset, NY

108-114 Jackson Ave, Syosset 47 Roosevelt Ave, Syosset 35 Roosevelt Ave, Syosset 24 Willis Ave, Syosset 47 Railroad Ave, Syosset 41 Roosevelt Ave, Syosset 36 Willis Ave, Syosset 22 Willis Ave, Syosset 10 Treadwell St, Syosset 18 Tredwell Ave, Syosset 50 Underhill Blvd, Syosset 55 Roosevelt Ave, Syosset 43 Roosevelt Ave, Syosset 30 Underhill Blvd, Syosset 30 Willis Ave, Syosset 16 Willis Ave, Syosset 12 Tredwell Ave, Syosset 28 Treadwell Ave, Syosset 19 Richmond St, Syosset 59 Roosevelt Ave, Syosset

Nearby ZIP codes for 40 Underhill Boulevard, Syosset, NY

11545, Nassau County, NY 11548, Nassau County, NY 11554, Nassau County, NY 11560, Nassau County, NY 11568, Nassau County, NY 11590, Nassau County, NY 11709, Nassau County, NY 11714, Nassau County, NY 11724, Suffolk County, NY 11732, Nassau County, NY 11743, Suffolk County, NY 11747, Suffolk County, NY 11753, Nassau County, NY 11756, Nassau County, NY 11765, Nassau County, NY 11797, Nassau County, NY 11801, Nassau County, NY 11804, Nassau County, NY

Frequently asked questions

What is the year built for 40 Underhill Boulevard, Syosset, NY 11791?

The development at 40 Underhill Boulevard, Syosset, NY 11791 was built in 1964.

What is the market value of 40 Underhill Boulevard, Syosset, NY 11791?

The current market value of 40 Underhill Boulevard, Syosset, NY 11791 is $2,109,600.

What is the total square footage of 40 Underhill Boulevard, Syosset, NY 11791?

40 Underhill Boulevard, Syosset, NY 11791 has a total of 13,113 square feet.

What is the price per square foot for this property?

$160 per square foot is the price for 40 Underhill Boulevard, Syosset, NY 11791.

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