Nassau County  »  11548  »  Dupont CT  »  1 Dupont CT

1 Dupont Court, Greenvale, NY 11548 - Property report

Also known as: 1 Dupont CT

Property image for 1 Dupont Court, Greenvale, NY 11548
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Property type

Estates - Luxurious Residence (250.01)

Year built

2003

Acreage

21.86

General information

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Address
Primary address
1 Dupont Court
ZIP code
11548
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
Brookville
Parcel ID
19-A-583

Owner

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Tax
Tax year
2026
Current property tax
$311,174
Tax class
Building
Property type
Estates - Luxurious Residence (250.01)
Building sq. ft.
23,155
Buildings on lot
1
Stories
2
Year built
2003
Rooms
17
Bathrooms
9
Half bathrooms
4
Exterior wall
Stone
Building style
Mansion, Estate
Basement
Full
Attic
None
Fireplaces
7
Heating type
Central/AC
Heating system
Central w ac
Lot
Acreage
21.86
Topography
Level
Land
Primary site

Area overview

Walk score
12 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
12 /100.  Somewhat Bikeable
School district
3015

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

Ownership

Ownership information for 1 Dupont Court, Greenvale, NY

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

Sales history for 1 Dupont Court, Greenvale, NY 11548

No recently recorded sales for this property.

More about Nassau County property records.

Title documents

No recently recorded documents for this property.

Tax

Property taxes for 1 Dupont Court, Greenvale, 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
$311,174
Base tax
$315,534
Current school tax
Recent tax assessments
Market value
$13,894,000
Assessed value
$13,894
Transitional assessed value
Exemptions

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 $13,894,000 $13,894 2271.008 $315,534 +8.56%
2025 $13,108,000 $13,108 2217.344 $290,649 +1.27%
2024 $13,823,000 $12,160 2360.144 $286,994 -13.72%
2023 $13,968,000 $13,968 2381.292 $332,619 -9.16%
2022 $13,823,000 $13,823 2649.022 $366,174 -9.44%
2021 $13,517,000 $13,517 2991.401 $404,348 +50.84%
2020 $8,400,000 $21,000 1276.498 $268,065 -1.60%
2019 $9,000,000 $22,500 1210.74 $272,417 -0.13%
2018 $9,524,000 $23,810 1145.614 $272,771 +4.52%
2017 $9,524,000 $23,810 1096.099 $260,981 -19.53%
Permits

Permit information for 1 Dupont Court, Greenvale, NY

No recently recorded permits for this property.

Neighborhood

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 1 Dupont Court, Greenvale, NY 11548 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Harbor Hill School 7 Public K-5 584 0.68
Glen Head Elementary School 10 Public K-5 371 1.87
Glenwood Landing Elementary School 9 Public K-5 427 1.88
Holy Child Academy NR Private PK-8 147 1.90
Holy Child Academy NR Private PK-8 147 1.90
East Hills Elementary School 8 Public K, 2-5 565 1.97
The Green Vale School NR Private PK-8 417 2.07
The Green Vale School NR Private PK-8 417 2.07
Roslyn Heights Elementary School NR Public PK, K-1 345 2.13
Roslyn Heights Elementary School NR Public PK, K-1 345 2.13
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Holy Child Academy NR Private PK-8 147 1.90
The Green Vale School NR Private PK-8 417 2.07
Roslyn Middle School 8 Public 6-8 766 2.09
North Shore Middle School 9 Public K-8 646 2.30
Willets Road School 8 Public 5-7 404 2.62
Whispering Pines School NR Private PK-10 131 2.91
Henry Viscardi School NR Private K-12 0 2.94
Wheatley School 10 Public 8-12 666 3.09
Long Island Lutheran Middle & High School NR Private 6-12 439 3.31
Westbury Middle School 4 Public 6-8 1,053 3.38
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Roslyn High School 9 Public 9-12 1,035 1.76
North Shore Senior High School 9 Public K-5, 9-12 764 2.41
Whispering Pines School NR Private PK-10 131 2.91
Westbury High School 5 Public 9-12 1,541 2.93
Henry Viscardi School NR Private K-12 0 2.94
Wheatley School 10 Public 8-12 666 3.09
Searingtown School 9 Public K-5, 11 585 3.29
Long Island Lutheran Middle & High School NR Private 6-12 439 3.31
Red Robin Country Day School NR Private 0 3.33
Carle Place Middle Senior High School 7 Public 7-12 598 3.59

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 1 Dupont Court, Greenvale, NY

2 Horse Hill Rd, Glen Head 8 Rolling Dr, Glen Head 9 Dupont CT, Greenvale 7 Dupont CT, Greenvale 1554 Old Cedar Swamp Rd, Glen Head 183 Wheatley Rd, Glen Head 5 Dupont CT, Greenvale 15 Dupont CT, Greenvale 11 Dupont CT, Roslyn 1552 Old Cedar Swamp Rd, Glen Head 181 Wheatley Rd, Glen Head 1566 Old Cedar Swamp Rd, Glen Head 1574 Old Cedar Swamp Rd, Glen Head 1580 Cedar Swamp Rd, Glen Head 21 Old Wheatley Rd, Glen Head

Nearby ZIP codes for 1 Dupont Court, Greenvale, NY

11030, Nassau County, NY 11501, Nassau County, NY 11507, Nassau County, NY 11514, Nassau County, NY 11530, Nassau County, NY 11542, Nassau County, NY 11545, Nassau County, NY 11547, Nassau County, NY 11560, Nassau County, NY 11568, Nassau County, NY 11576, Nassau County, NY 11577, Nassau County, NY 11579, Nassau County, NY 11590, Nassau County, NY 11596, Nassau County, NY 11732, Nassau County, NY 11753, Nassau County, NY 11765, Nassau County, NY 11801, Nassau County, NY

Frequently asked questions

What is the year built for 1 Dupont Court, Greenvale, NY 11548?

The development at 1 Dupont Court, Greenvale, NY 11548 was built in 2003.

What is the total square footage of 1 Dupont Court, Greenvale, NY 11548?

1 Dupont Court, Greenvale, NY 11548 has a total of 23,155 square feet.

What is the assessed value of 1 Dupont Court, Greenvale, NY 11548?

1 Dupont Court, Greenvale, NY 11548 is currently assessed at $13,894.

What are the property taxes for 1 Dupont Court, Greenvale, NY 11548?

The property taxes for 1 Dupont Court, Greenvale, NY 11548 total $315,533.

Disclaimer

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