Nassau County  »  11548  »  Dupont CT  »  9 Dupont CT

9 Dupont Court, Greenvale, NY 11548 - Property report

Also known as: 9 Dupont CT

Property image for 9 Dupont Court, Greenvale, NY 11548
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Property type

Estates - Luxurious Residence (250.01)

Year built

2004

Acreage

5.083

Sale price

$1,150,000

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
9 Dupont Court
ZIP code
11548
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
Brookville
Parcel ID
19-A-586

Owner

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Sales
Sale date
07/16/2003
Sale price
$1,150,000
Arm's length
Tax
Tax year
2026
Current property tax
$94,610
Tax class
Building
Property type
Estates - Luxurious Residence (250.01)
Building sq. ft.
10,597
Buildings on lot
1
Stories
2
Year built
2004
Rooms
15
Bathrooms
7
Half bathrooms
3
Exterior wall
Brick
Building style
Mansion, Estate
Basement
Full
Attic
None
Fireplaces
4
Heating type
Central/AC
Heating system
Central w ac
Lot
Acreage
5.083
Topography
Level
Land
Primary site

Area overview

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

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

Ownership

Ownership information for 9 Dupont Court, Greenvale, NY

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

Sales history for 9 Dupont Court, Greenvale, NY 11548

Sale date Sale price Buyer name Seller name
07/16/2003 $1,150,000 XXXXXX XXXXXX XXXXXX XXXXXXX XXX

*Most recent sale on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
03/12/2026 - R
02/13/2026 - D		 Mortgage
(Mtg-Mortgage)		 XXXXXX XXXXXX XXXXXXXX XXXXX XXXX XX
03/12/2026 - R Other
(Mortgage Agreement)		 XXXXXX XXXXXX XXXXXXXX XXXXX XXXX XX
08/02/2018 - R
06/08/2018 - D		 Mortgage
(Adjustable Rate (Arm))		 XXXXXX XXXXXX XXXXXXXX XXXXX XXXX XX
08/02/2018 - R Other
(Mortgage Agreement)		 XXXXXX XXXXXX XXXXXXXX XXXXX XXXX XX
08/18/2003 - R
07/16/2003 - D		 Deed XXXXXX XXXXXXX XXX XXXXXX XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 9 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
$94,610
Base tax
$97,971
Current school tax
Recent tax assessments
Market value
$4,314,000
Assessed value
$4,314
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 $4,314,000 $4,314 2271.008 $97,971 +2.28%
2025 $4,320,000 $4,320 2217.344 $95,789 -9.57%
2024 $5,545,800 $4,488 2360.144 $105,923 -7.56%
2023 $4,812,000 $4,812 2381.292 $114,588 +0.20%
2022 $4,317,000 $4,317 2649.022 $114,358 -6.14%
2021 $4,073,000 $4,073 2991.401 $121,840 +38.43%
2020 $2,758,000 $6,895 1276.498 $88,015 -1.59%
2019 $2,954,800 $7,387 1210.74 $89,437 -0.91%
2018 $3,151,600 $7,879 1145.614 $90,263 -1.64%
2017 $3,348,800 $8,372 1096.099 $91,765 -3.01%
Permits

Permit information for 9 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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Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
Harbor Hill School 7 Public K-5 584 0.71
Glen Head Elementary School 10 Public K-5 371 1.55
Glenwood Landing Elementary School 9 Public K-5 427 1.61
The Green Vale School NR Private PK-8 417 1.87
The Green Vale School NR Private PK-8 417 1.87
North Shore Middle School 9 Public K-8 646 2.01
North Shore Senior High School 9 Public K-5, 9-12 764 2.10
East Hills Elementary School 8 Public K, 2-5 565 2.19
Holy Child Academy NR Private PK-8 147 2.21
Holy Child Academy NR Private PK-8 147 2.21
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
The Green Vale School NR Private PK-8 417 1.87
North Shore Middle School 9 Public K-8 646 2.01
Holy Child Academy NR Private PK-8 147 2.21
Roslyn Middle School 8 Public 6-8 766 2.32
Willets Road School 8 Public 5-7 404 2.90
Henry Viscardi School NR Private K-12 0 3.18
Whispering Pines School NR Private PK-10 131 3.23
Long Island Lutheran Middle & High School NR Private 6-12 439 3.32
Wheatley School 10 Public 8-12 666 3.39
Carrie Palmer Weber Middle School 7 Public 6-8 1,216 3.65
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Roslyn High School 9 Public 9-12 1,035 1.91
North Shore Senior High School 9 Public K-5, 9-12 764 2.10
Henry Viscardi School NR Private K-12 0 3.18
Whispering Pines School NR Private PK-10 131 3.23
Westbury High School 5 Public 9-12 1,541 3.24
Long Island Lutheran Middle & High School NR Private 6-12 439 3.32
Wheatley School 10 Public 8-12 666 3.39
Searingtown School 9 Public K-5, 11 585 3.49
Vincent Smith School NR Private 2-12 46 3.54
Red Robin Country Day School NR Private 0 3.56

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

Neighbors for 9 Dupont Court, Greenvale, NY

2 Horse Hill Rd, Glen Head 8 Rolling Dr, Glen Head 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 1 Dupont CT, Greenvale 1552 Old Cedar Swamp Rd, Glen Head 181 Wheatley Rd, Glen Head 1574 Old Cedar Swamp Rd, Glen Head 21 Old Wheatley Rd, Glen Head

Nearby ZIP codes for 9 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 9 Dupont Court, Greenvale, NY 11548?

The development at 9 Dupont Court, Greenvale, NY 11548 was built in 2004.

What is the total square footage of 9 Dupont Court, Greenvale, NY 11548?

9 Dupont Court, Greenvale, NY 11548 has a total of 10,597 square feet.

When was 9 Dupont Court, Greenvale, NY 11548 last sold and what was the sale price?

9 Dupont Court, Greenvale, NY 11548 was last sold on 07/16/2003 for $1,150,000.

What is the assessed value of 9 Dupont Court, Greenvale, NY 11548?

9 Dupont Court, Greenvale, NY 11548 is currently assessed at $4,314.

What are the property taxes for 9 Dupont Court, Greenvale, NY 11548?

The property taxes for 9 Dupont Court, Greenvale, NY 11548 total $97,971.

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