Westchester County  »  10591  »  Union Ave  »  21 Union Ave

21 Union Avenue, Tarrytown, NY 10591 - Property report

Also known as: 21 Union Ave

Property image for 21 Union Avenue, Tarrytown, NY 10591
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Property type

One Family Year-Round Residence (210)

Year built

1951

Acreage

0.53

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 Union Avenue
ZIP code
10591
County
Westchester
SWIS code
Village of Tarrytown
Parcel ID
1.80-42-18

Owner

Find out who owns 21 Union Avenue, Tarrytown, NY 10591. Uncover corporate and individual owners with a free account.

Tax
Tax year
2025
Current property tax
$42,345
Zoning & Use
Zoning
R-20
Building
Property type
One Family Year-Round Residence (210)
Building sq. ft.
1,835
Year built
1951
Bathrooms
3
Lot
Acreage
0.53

Area overview

Walk score
78 /100.  Very Walkable
Transit score
0 /100.  Minimal Transit
Bike score
22 /100.  Somewhat Bikeable
School district
552601

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

Ownership

Ownership information for 21 Union Avenue, Tarrytown, NY

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

Sales history for 21 Union Avenue, Tarrytown, NY 10591

No recently recorded sales for this property.

More about Westchester County property records.

Title documents

Date Type Amount Party 1 Party 2
09/11/2020 - R
09/02/2020 - D		 Mortgage XXXXXXX XXXXXX XXXXXXXX XXXXXXXXXX XXXXXXXXXXXX XXXXXXX XXX
03/29/2010 - R
03/08/2010 - D		 Deed
(Gift deed)		 XXXXXX XXXXXX XXXXXX XXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21 Union Avenue, Tarrytown, NY

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

Current property tax
Tax year
2025
Current property tax
$42,345
Base tax
$54,713
Recent tax assessments
Market value
$1,900,000
Land value
$364,900
Building value
$1,535,100
Assessed value
$1,900,000

More about Westchester 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
2025 $1,900,000 $1,900,000 28.7964 $54,713 -1.99%
2024 $1,864,600 $1,864,600 29.9402 $55,827 +10.93%
2023 $1,640,300 $1,640,300 30.6819 $50,327 +1.10%
2022 $1,515,200 $1,515,200 32.8531 $49,779 +6.54%
2021 $1,376,200 $1,376,200 33.9494 $46,721 +9.74%
2020 $1,263,500 $1,263,500 33.69456 $42,573 +1.57%
2019 $1,263,500 $1,263,500 33.172122 $41,913 +1.46%
2018 $1,240,700 $1,240,700 33.294 $41,308 +4.34%
2017 $1,183,800 $1,183,800 33.442491 $39,589 -97.00%
2016 $1,138,300 $1,138,300 1159.463773 $1,319,818 +3391.89%
Permits

Permit information for 21 Union Avenue, Tarrytown, NY

Issued date Permit number Permit type Sub type Valuation Finaled date Status
09/12/2024

*Most recent permit on record 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 21 Union Avenue, Tarrytown, NY 10591 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)
Washington Irving Interm School 6 Public 3-5 581 0.38
John Paulding School NR Public K-2 205 0.55
Hackley School NR Private K-12 842 0.58
Transfiguration School NR Private PK-8 155 0.62
Transfiguration School NR Private PK-8 155 0.62
W L Morse School NR Public 1-2 408 0.85
Pocantico Hills Central School 7 Public PK, K-8 320 2.14
Pocantico Hills Central School 7 Public PK, K-8 320 2.14
Our Lady Of Mount Carmel School NR Private PK, K-8 185 2.40
Our Lady Of Mount Carmel School NR Private PK, K-8 185 2.40
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Hackley School NR Private K-12 842 0.58
Transfiguration School NR Private PK-8 155 0.62
Sleepy Hollow Middle School 4 Public 6-8 582 0.65
Pocantico Hills Central School 7 Public PK, K-8 320 2.14
Irvington Middle School 8 Public 6-8 426 2.39
Our Lady Of Mount Carmel School NR Private PK, K-8 185 2.40
John Cardinal Oconnor School NR Private 2-8 68 2.46
Alexander Hamilton High School 5 Public 7-12 485 2.60
Blythedale School NR Public K-12 123 2.82
Hawthorne Country Day School NR Private 133 2.98
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Hackley School NR Private K-12 842 0.58
Sleepy Hollow High School 7 Public 9-12 819 0.66
Irvington High School 9 Public 9-12 548 2.39
Alexander Hamilton High School 5 Public 7-12 485 2.60
Blythedale School NR Public K-12 123 2.82
Hawthorne Country Day School NR Private 133 2.98
NY School for the Deaf NR Private PK, K-12 0 3.20
New York School for the Deaf NR Private PK-12 135 3.31
Maria Regina High School NR Private 9-12 544 3.68
Ardsley High School 10 Public 9-12 716 3.85

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

Neighbors for 21 Union Avenue, Tarrytown, NY

50 Castle Heights Ave, Tarrytown 11 Union Ave, Tarrytown 18 Rosehill Ave, Tarrytown 20 Castle Heights Ave, Tarrytown 36 Hamilton Pl, Tarrytown 51 Castle Heights Ave, Tarrytown 115 Marymount Ave, Tarrytown 17 Castle Heights Ave, Tarrytown 16 Rosehill Ave, Tarrytown 8 Rosehill Ave, Tarrytown 64 Castle Heights Ave, Tarrytown 26 Rosehill Ave, Tarrytown 5 Castle Heights Ave, Tarrytown 65 Castle Heights Ave, Tarrytown 1 Union Ave, Tarrytown 40 Castle Heights Ave, Tarrytown 28 Rosehill Ave, Tarrytown 35 Castle Heights Ave, Tarrytown 10 Castle Heights Ave, Tarrytown 38 Hamilton Pl, Tarrytown

Nearby ZIP codes for 21 Union Avenue, Tarrytown, NY

10502, Westchester County, NY 10503, Westchester County, NY 10510, Westchester County, NY 10522, Westchester County, NY 10523, Westchester County, NY 10530, Westchester County, NY 10532, Westchester County, NY 10533, Westchester County, NY 10583, Westchester County, NY 10594, Westchester County, NY 10595, Westchester County, NY 10601, Westchester County, NY 10603, Westchester County, NY 10606, Westchester County, NY 10607, Westchester County, NY 10706, Westchester County, NY 10960, Rockland County, NY 10968, Rockland County, NY

Frequently asked questions

What is the year built for 21 Union Avenue, Tarrytown, NY 10591?

The development at 21 Union Avenue, Tarrytown, NY 10591 was built in 1951.

What is the total square footage of 21 Union Avenue, Tarrytown, NY 10591?

21 Union Avenue, Tarrytown, NY 10591 has a total of 1,835 square feet.

What is the assessed value of 21 Union Avenue, Tarrytown, NY 10591?

21 Union Avenue, Tarrytown, NY 10591 is currently assessed at $1,900,000.

What are the property taxes for 21 Union Avenue, Tarrytown, NY 10591?

The property taxes for 21 Union Avenue, Tarrytown, NY 10591 total $54,713.

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