Nassau County  »  11791  »  Gainsboro Ln  »  21 Gainsboro Ln

21 Gainsboro Lane, Syosset, NY 11791 - Property report

Also known as: 21 Gainsboro Ln

Property image for 21 Gainsboro Lane, Syosset, NY 11791
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Property type

One Family Year - Round Residence (210.01)

Year built

2019

Acreage

0.163

Sale price

$540,000

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
21 Gainsboro Lane
ZIP code
11791
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
12-397-20

Owner

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

Sales
Sale date
07/10/2019
Sale price
$540,000
Arm's length
Tax
Tax year
2026
Current property tax
$19,056
Tax class
Zoning & Use
Zoning
R1-7
Building
Property type
One Family Year - Round Residence (210.01)
Building sq. ft.
3,079
Buildings on lot
1
Stories
2
Year built
2019
Rooms
10
Bathrooms
3
Half bathrooms
1
Exterior wall
Alum/Vinyl
Building style
Colonial
Basement
Full
Attic
None
Heating type
Central
Heating system
Hot water
Lot
Acreage
0.163
Topography
Level
Land
Primary site

Area overview

Walk score
12 /100.  Car-Dependent
Transit score
0 /100.  Minimal Transit
Bike score
31 /100.  Somewhat Bikeable
School district
3013

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

Ownership

Ownership information for 21 Gainsboro Lane, Syosset, NY

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

Sales history for 21 Gainsboro Lane, Syosset, NY 11791

Sale date Sale price Buyer name Seller name
07/10/2019 $540,000 XXXX XXXXXXX X; XXXXXXXXX XXXXX XXXXXXXX XXXXXXX

*Most recent sale on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
10/15/2019 - R
09/23/2019 - D		 Mortgage
(Fixed rate)		 XXXX XXXXXXX X XXXXX XXXXXXXX XXX
07/31/2019 - R Deed agreement
(Agreement deed)		 XXXXXXXXX XXXXX XXXX XXXXXXX
07/31/2019 - R Other
(Power of attorney)		 XXXXXXXX XXXXXXX XXXXXX XXX X
07/19/2019 - R Other
(Mortgage satisfaction)		 XXXXXXXX XXXXXXX XXXXXXXX XXXXXXX
07/31/2019 - R
07/10/2019 - D		 Deed XXXXXXXX XXXXXXX XXXX XXXXXXX X
10/18/2000 - R
10/04/2000 - D		 Deed

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21 Gainsboro Lane, 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
$19,056
Base tax
$34,308
Current school tax
Recent tax assessments
Market value
$1,055,000
Assessed value
$1,055
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 $1,055,000 $1,055 3251.91 $34,308 +2.11%
2025 $1,070,000 $1,070 3139.97 $33,598 -1.05%
2024 $1,107,000 $1,010 3361.673 $33,953 -3.21%
2023 $1,004,000 $1,004 3493.926 $35,079 +178.27%
2022 $330,000 $330 3820.056 $12,606 -41.90%
2021 $505,000 $505 4296.58 $21,698 +118.83%
2020 $210,800 $527 1881.494 $9,915 -0.63%
2019 $226,000 $565 1766.064 $9,978 -0.66%
2018 $240,800 $602 1668.546 $10,045 -0.70%
2017 $256,000 $640 1580.606 $10,116 +0.04%
Permits

Permit information for 21 Gainsboro Lane, Syosset, 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)
South Grove Elementary School 9 Public K-5 416 0.41
Baylis Elementary School 9 Public K-5 405 0.42
Willits Elementary School 9 Public K-5 305 0.49
Stratford Road School 9 Public K-4 626 0.92
Woodland Avenue School 6 Public PK, K-5 349 1.02
Woodland Avenue School 6 Public PK, K-5 349 1.02
Judy Jacobs Parkway Elementary School 8 Public K-4 392 1.05
Robbins Lane Elementary School 9 Public K-5 500 1.36
Plainview Old Bethpage Middle School 8 Public 5-8 889 1.48
Schechter School of Long Island NR Private K-5 114 1.48
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
H B Thompson Middle School 9 Public 6-8 997 0.61
Fusion Academy Woodbury Ny NR Private 6-12 75 1.20
Plainview Old Bethpage Middle School 8 Public 5-8 889 1.48
Our Lady Of Mercy School NR Private PK-8 195 1.52
St Edward Confessor School NR Private PK-8 265 1.54
Good Shepherd Lutheran School NR Private 0 1.63
P.S. 256 NR Public PK, K-12 500 1.85
H B Mattlin Middle School 8 Public 5-8 772 2.23
Jericho Middle School 9 Public 6-8 810 2.28
St Ignatius Loyola School NR Private PK, K-8 226 2.36
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Fusion Academy Woodbury Ny NR Private 6-12 75 1.20
Good Shepherd Lutheran School NR Private 0 1.63
P.S. 256 NR Public PK, K-12 500 1.85
Our Lady Of Mercy Academy NR Private 9-12 359 2.00
Jericho Senior High School 10 Public 9-12 1,258 2.28
Plainview Old Bethpage JFK High School 10 Public 9-12 1,649 2.35
Miss Sue's Nursery School and Kindergarten NR Private 0 2.36
Syosset Senior High School 10 Public 9-12 2,266 2.42
The Center For Developmental Disabilities NR Private 105 2.65
Bethpage Senior High School 9 Public 9-12 932 3.04

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

Neighbors for 21 Gainsboro Lane, Syosset, NY

11 Gainsboro Ln, Syosset 22 Greenvale Ln, Syosset 23 Gainsboro Ln, Syosset 24 Newmarket Rd, Syosset 15 Gainsboro Ln, Syosset 30 Newmarket Rd, Syosset 5 Gainsboro Ln, Syosset 20 Greenvale Ln, Syosset 26 New Market Rd, Syosset 19 Gainsboro Ln, Syosset 3 Gainsboro Ln, Syosset 29 Gainsboro Ln, Syosset 9 Gainsboro Ln, Syosset 25 Gainsboro Ln, Syosset 31 Gainsboro Ln, Syosset 43 Gary Rd, Syosset 17 Gainsboro Ln, Syosset 7 Gainsboro Ln, Syosset 27 Gainsboro Ln, Syosset 28 Newmarket Rd, Syosset

Nearby ZIP codes for 21 Gainsboro Lane, 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 Gainsboro Lane, Syosset, NY 11791?

The development at 21 Gainsboro Lane, Syosset, NY 11791 was built in 2019.

What is the total square footage of 21 Gainsboro Lane, Syosset, NY 11791?

21 Gainsboro Lane, Syosset, NY 11791 has a total of 3,079 square feet.

When was 21 Gainsboro Lane, Syosset, NY 11791 last sold and what was the sale price?

21 Gainsboro Lane, Syosset, NY 11791 was last sold on 07/10/2019 for $540,000.

What is the assessed value of 21 Gainsboro Lane, Syosset, NY 11791?

21 Gainsboro Lane, Syosset, NY 11791 is currently assessed at $1,055.

What are the property taxes for 21 Gainsboro Lane, Syosset, NY 11791?

The property taxes for 21 Gainsboro Lane, Syosset, NY 11791 total $34,307.

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