Nassau County  »  11791  »  Henni CT  »  21 Henni CT

21 Henni Court, Syosset, NY 11791 - Property report

Also known as: 21 Henni CT

Property image for 21 Henni Court, Syosset, NY 11791
static Mapbox map

Property type

One Family Year - Round Residence (210.01)

Year built

1977

Acreage

0.167

Sale price

$760,000

General information

Unlock this property report with a free account

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
21 Henni Court
ZIP code
11791
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
15-F-1402

Owner

Find out who owns 21 Henni Court, Syosset, NY 11791. Uncover corporate and individual owners with a free account.

Sales
Sale date
11/01/2010
Sale price
$760,000
Arm's length
Tax
Tax year
2026
Current property tax
$24,454
Tax class
Zoning & Use
Zoning
R1-1A
Building
Property type
One Family Year - Round Residence (210.01)
Building sq. ft.
2,453
Buildings on lot
1
Stories
2
Year built
1977
Rooms
9
Bathrooms
2
Half bathrooms
2
Exterior wall
Alum/Vinyl
Building style
Splanch
Basement
Full
Attic
None
Fireplaces
1
Heating type
Central/AC
Heating system
Central w ac
Lot
Acreage
0.167
Topography
Level
Land
Primary site

Area overview

Walk score
53 /100.  Somewhat Walkable
Transit score
0 /100.  Minimal Transit
Bike score
33 /100.  Somewhat Bikeable
School district
3012

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

Ownership

Ownership information for 21 Henni Court, Syosset, NY

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

Sales history for 21 Henni Court, Syosset, NY 11791

Sale date Sale price Buyer name Seller name
11/01/2010 $760,000 XXXXXXX XXXXXXXXX; XXXXXXX XXXXXXXXX XXXXXX XXXXXXXXXX
05/18/2010 $530,000 XXXXXX XXXXXXXXXX XXXXXXX X XXXXXX, XXX
02/09/1993 $302,000 XXX XXXX XXXXX XXXXXXXX XXXXXX

*Most recent sales on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
11/19/2024 - R Other
(Mortgage satisfaction)		 XXXXXXXXX XXXXXXX XXXXXXXX XXXXXXX XXXXXX XXXXX
11/30/2010 - R
11/01/2010 - D		 Deed XXXXXX XXXXXXXXXX XXXXXXX XXXXXXXXX
05/21/2010 - R
05/18/2010 - D		 Deed
(Referee`s deed)		 XXXXXXX X XXXXXX, XXX XXXXXX XXXXXXXXXX
03/08/2006 - R
02/07/2006 - D		 Mortgage X XXX XXXXXXXXXXX XXXX XXXXX XXX
03/17/1993 - R
02/09/1993 - D		 Deed XXXXXXXX XXXXXX XXX XXXX XXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21 Henni Court, Syosset, NY

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

Current property tax
Tax year
2026
Property tax
$24,454
Current school tax
Recent tax assessments
Market value
$752,000
Assessed value
$752
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 $752,000 $752 3251.91 $24,454 +1.54%
2025 $767,000 $767 3139.97 $24,084 -12.31%
2024 $853,000 $817 3361.673 $27,465 -10.88%
2023 $882,000 $882 3493.926 $30,816 -5.43%
2022 $853,000 $853 3820.056 $32,585 -15.55%
2021 $898,000 $898 4296.58 $38,583 +108.83%
2020 $392,800 $982 1881.494 $18,476 -0.55%
2019 $420,800 $1,052 1766.064 $18,579 -0.76%
2018 $448,800 $1,122 1668.546 $18,721 -0.64%
2017 $476,800 $1,192 1580.606 $18,841 -0.04%
Permits

Permit information for 21 Henni Court, Syosset, NY

No recently recorded permits for this property.

Neighborhood

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 21 Henni Court, Syosset, NY 11791 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)
Village Elementary School 9 Public K-5 415 0.05
St Edward Confessor School NR Private PK-8 265 0.22
St Edward Confessor School NR Private PK-8 265 0.22
P.S. 256 NR Public PK, K-12 500 0.54
P.S. 256 NR Public PK, K-12 500 0.54
Berry Hill Elementary School 8 Public K-5 450 0.93
Willits Elementary School 9 Public K-5 305 1.19
The Center For Developmental Disabilities NR Private 105 1.22
South Grove Elementary School 9 Public K-5 416 1.50
Walt Whitman Elementary School 9 Public K-5 387 1.66
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
St Edward Confessor School NR Private PK-8 265 0.22
P.S. 256 NR Public PK, K-12 500 0.54
South Woods Middle School 8 Public 6-8 746 0.96
H B Thompson Middle School 9 Public 6-8 997 1.16
Fusion Academy Woodbury Ny NR Private 6-12 75 1.16
The Center For Developmental Disabilities NR Private 105 1.22
Harmony Heights School NR Private 8-12 0 2.41
East Woods School NR Private PK, K-8 226 2.41
Jericho Middle School 9 Public 6-8 810 2.81
Plainview Old Bethpage Middle School 8 Public 5-8 889 2.83
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
P.S. 256 NR Public PK, K-12 500 0.54
Our Lady Of Mercy Academy NR Private 9-12 359 0.76
Syosset Senior High School 10 Public 9-12 2,266 0.99
Fusion Academy Woodbury Ny NR Private 6-12 75 1.16
The Center For Developmental Disabilities NR Private 105 1.22
Harmony Heights School NR Private 8-12 0 2.41
Harmony Heights School NR Private 8-12 74 2.42
Jericho Senior High School 10 Public 9-12 1,258 2.81
Plainview Old Bethpage JFK High School 10 Public 9-12 1,649 3.31
Oyster Bay High School 7 Public 9-12 415 3.77

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

Neighbors for 21 Henni Court, Syosset, NY

24 Henni CT, Syosset 64 Barry Ln, Syosset 25 Henni CT, Syosset 19 Barry Ln, Syosset 10 Henni CT, Syosset 31 Henni CT, Syosset 68 Barry Ln, Syosset 58 Barry Ln, Syosset 18 Henni CT, Syosset 14 Henni CT, Syosset 27 Barry Ln, Syosset 9 Henni CT, Syosset 3 Henni CT, Syosset 52 Barry Ln, Syosset 32 Pine Rd, Syosset 29 Henni CT, Syosset 17 Henni CT, Syosset 23 Barry Ln, Syosset 5 Henni CT, Syosset 56 Barry Ln, Syosset

Nearby ZIP codes for 21 Henni Court, 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 21 Henni Court, Syosset, NY 11791?

The development at 21 Henni Court, Syosset, NY 11791 was built in 1977.

What is the total square footage of 21 Henni Court, Syosset, NY 11791?

21 Henni Court, Syosset, NY 11791 has a total of 2,453 square feet.

When was 21 Henni Court, Syosset, NY 11791 last sold and what was the sale price?

21 Henni Court, Syosset, NY 11791 was last sold on 11/01/2010 for $760,000.

What is the assessed value of 21 Henni Court, Syosset, NY 11791?

21 Henni Court, Syosset, NY 11791 is currently assessed at $752.

What are the property taxes for 21 Henni Court, Syosset, NY 11791?

The property taxes for 21 Henni Court, Syosset, NY 11791 total $24,454.

Disclaimer

Copyright 2003-2026 by PropertyShark.com

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.

Sign up for a free account