New York City  »  10010  »  E 21st St  »  323 E 21st St

Colonial Mews - 323 East 21st Street, New York, NY 10010 - Property report

Also known as: 323 Rear E 21st St

Property image for Colonial Mews - 323 East 21st Street, New York, NY 10010
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Property type

Walk-up Cooperative Building (Other than Condominiums) (XC6)

Year built

1910

Lot sq. ft.

2,500

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
Building name
Colonial Mews
Primary address
Colonial Mews - 323 East 21st Street
Alternate address(es)
323 Front E 21st St
323 Rear E 21st St
ZIP code
10010
Neighborhood
Gramercy Park
Borough
Manhattan
Block & lot
00927-0015

Owner

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Building
Property type
Walk-up Cooperative Building (Other than Condominiums) (XC6)
Building sq. ft.
11,718
Building dimensions
25 ft x 64 ft
Buildings on lot
2
Stories
5
Year built
1910
Tax
Tax year
2026-2027
Property tax
$182,070
Tax class
Floor area ratio (FAR)
Commercial FAR
Residential FAR
Buildable area
Zoning & Use
Zoning
Qualified opportunity zone
Residential units
18
Residential sq. ft.
Commercial units
0
Office sq. ft.
Retail sq. ft.
Lot
Frontage(s)
East 21 Street (narrow)
Nearest wide street
1 Avenue
Distance to wide street
Lot dimensions
25 ft x 100 ft
Lot sq. ft.
2,500

Area overview

Walk score
99 /100.  Walker's Paradise
Transit score
100 /100.  Rider's Paradise
Bike score
93 /100.  Biker's Paradise
School district
2
Community district
6
Closest police station
0.75 Miles
Closest fire station
0.35 Miles

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

Units for Colonial Mews - 323 East 21st Street, New York, NY

Unit Sale date Sale price Sq. ft. Price/Sq. ft.
Unit 1B 06/29/2023 647
Unit 2C 05/06/2019
Unit 2D 07/19/2018 600
Unit 3A 12/23/2020
Unit 3B 10/15/2008
Unit 4A 11/13/2024
Unit 4B 03/14/2013
Unit 4C 03/03/2016
Unit 4D 10/27/2010 500
Unit 4M 600
Unit 5M 06/09/2023 300
Unit 7W 07/28/2004
Unit M1 04/26/2021
Unit M2 04/14/2022
Unit M3 04/22/2010
Unit M4 08/09/2018 550
Unit M5
Unit M6 11/29/2012 300
Ownership

Ownership information for Colonial Mews - 323 East 21st Street, New York, NY

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

Sales history for Colonial Mews - 323 East 21st Street, New York, NY 10010

No recently recorded sales for this property.

More about New York City property records.

Title documents

Date Type Amount Party 1 Party 2
01/06/2026 - R
12/29/2025 - D		 Satisfaction of Mortgage
(2025123000909001)		 XXX XXXX XXXX XXXXXX XXXXXX XXX XXXXXX XXXXXXXX XXXX
12/23/2025 - R UCC3 Termination
(2025122200534001)		 XXX XXXX XXXX XXXXXX XXXXXX XXX XXXXXX XXXXXXXX XXXX
12/22/2025 - R UCC3 Termination
(2025122200420001)		 XXX XXXX XXXX XXXXXX XXXXXX XXX XXXXXX XXXXXXXX XXXX
12/19/2025 - R UCC3 Amendment
(2025121900069001)		 XXX XXXX XXXX XXXXXX XXXXXX XXX XXXXXX XXXXXXXX XXXX
11/26/2025 - R
11/14/2025 - D		 Asgn of Asgn of L&R
(2025111800535008)		 XXXXXXXX XXXXXXXX XXXXXXXXXXX XXXX XXXXXXXX XXXXXXXXXXX XXXX X X
11/26/2025 - R
11/14/2025 - D		 Assignment, Mortgage
(2025111800535007)		 XXXXXXXX XXXXXXXX XXXXXXXXXXX XXXX XXXXXXXX XXXXXXXXXXX XXXX X X
11/26/2025 - R
11/14/2025 - D		 Assignment of Leases and Rents
(2025111800535006)		 XXX XXXX XXXX XXXXXX XXXXXX XXX XXXXXXXX XXXXXXXX XXXXXXXXXXX XXXX
11/26/2025 - R
11/14/2025 - D		 Mortgage
(2025111800535005)		 XXX XXXX XXXX XXXXXX XXXXXX XXX XXXXXXXX XXXXXXXX XXXXXXXXXXX XXXX
11/26/2025 - R
11/14/2025 - D		 Asgn of Asgn of L&R
(2025111800535004)		 XXXXXXXX XXXXXXXX XXXXXXXXXXX XXXX XXXXXXXX XXXXXXXXXXX XXXX X X
11/26/2025 - R
11/14/2025 - D		 Assignment, Mortgage
(2025111800535003)		 XXXXXXXX XXXXXXXX XXXXXXXXXXX XXXX XXXXXXXX XXXXXXXXXXX XXXX X X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for Colonial Mews - 323 East 21st Street, New York, NY

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

Current property tax
Tax year
2025-2026
Property tax
$182,070
Municipal exemptions
Recent tax assessments
Market value
$3,670,000
Assessed value
$1,651,500

More about New York City 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 Taxable amount Tax rate Base tax Property tax Y-o-Y change
2025/26 $3,803,000 $1,711,350 $1,511,300 12.439% $188,560 $175,554 +5.47%
2024/25 $3,551,000 $1,597,950 $1,444,010 12.5% $181,039 $166,445 +3.05%
2023/24 $3,522,000 $1,584,900 $1,415,340 12.502% $177,526 $161,513 +3.86%
2022/23 $3,342,000 $1,503,900 $1,388,320 12.267% $170,892 $155,507 +4.57%
2021/22 $3,054,000 $1,374,300 $1,336,430 12.235% $164,114 $148,714 -7.18%
2020/21 $3,287,000 $1,479,150 $1,306,040 12.267% $160,798 $160,212 +6.07%
2019/20 $3,128,000 $1,407,600 $1,210,970 12.473% $151,626 $151,044 +9.04%
2018/19 $3,032,000 $1,364,400 $1,098,320 12.612% $139,138 $138,520 +9.93%
2017/18 $2,767,000 $1,245,150 $990,720 12.719% $126,880 $126,010 +7.23%
2016/17 $2,480,000 $1,116,000 $911,550 12.892% $118,430 $117,517 +4.58%
Permits

Permit information for Colonial Mews - 323 East 21st Street, New York, NY

Filing date Job type Job status Job description Initial cost
07/11/2025 Alteration
11/06/2017 Alteration type 2
08/22/2017 Alteration type 3
08/22/2017 Alteration type 3
02/16/2011 Alteration type 2

*Most recent permits on record for this property.

More about New York City property records

Violations

HPD Violations

Violation ID Inspection date Class NOV issue date Status
05/07/2026 A
04/29/2026 A
11/17/2025 I

*Most recent HPD violations on record for this property.

Neighborhood

Gramercy residential market stats

Access a detailed real estate market overview of Gramercy so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Gramercy and compare it to other neighborhoods in Manhattan.

Median sale price

—

Median price/sq. ft.

—

Manhattan median sale price

$1,260,000

5.4% Y-o-Y

Check out recently sold homes in Manhattan and see how their prices compare.

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

Property location map
FEMA flood zones
X

Hurricane evacuation zones

Property location map
Hurricane evacuation zones
3

Subway & traffic

Closest station
1st Ave & 14th St at NE Corner
Station lines
L
Distance (miles)
0.342
View subway map

Access the detailed traffic volume map for Colonial Mews - 323 East 21st Street, New York, NY 10010 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity. View daily traffic map

Schools

Nearest elementary schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
P.S. 40 Augustus St.-Gaudens 8 Yes Public PK, K-5 577 0.08
P.S. 40 Augustus St.-Gaudens 8 Yes Public PK, K-5 577 0.08
Learning Spring School NR No Private K-8 189 0.11
The Epiphany School NR No Private PK-8 501 0.11
The Epiphany School NR No Private PK-8 501 0.11
Epiphany Elementary School NR No Private PK, K-8 552 0.12
Epiphany Elementary School NR No Private PK, K-8 552 0.12
47 the American Sign Language and English Lower School 4 No Public PK, K-8 176 0.18
47 the American Sign Language and English Lower School 4 No Public PK, K-8 176 0.18
P.S. 226 NR No Public PK, K-12 280 0.27
Nearest middle schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
Jhs 104 Simon Baruch 8 Yes Public 6-8 891 0.03
Ms 255 Salk School Of Science 9 No Public 6-8 364 0.08
Learning Spring School NR No Private K-8 189 0.11
The Epiphany School NR No Private PK-8 501 0.11
Epiphany Elementary School NR No Private PK, K-8 552 0.12
47 the American Sign Language and English Lower School 4 No Public PK, K-8 176 0.18
United Nations International School NR No Private PK-12 1,615 0.19
Institute For Collaborative Education 8 No Public 6-12 476 0.27
P.S. 226 NR No Public PK, K-12 280 0.27
Friends Seminary NR No Private K-12 779 0.30
Nearest high schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
American Sign Language & English Secondary School NR No Public 9-12 202 0.18
United Nations International School NR No Private PK-12 1,615 0.19
Institute For Collaborative Education 8 No Public 6-12 476 0.27
High School for Health Professions & Human Services 7 No Public 9-12 1,627 0.27
P.S. 226 NR No Public PK, K-12 280 0.27
Friends Seminary NR No Private K-12 779 0.30
School Of The Future High School 8 No Public 6-12 730 0.32
Manhattan Comprehensive Night And Day High School 2 No Public 10-12 506 0.32
British International School of Ny NR No Private PK-10 300 0.35
United Nations International School NR No Private K-12 0 0.35

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

Neighbors for Colonial Mews - 323 East 21st Street, New York, NY

335 E 21st St, New York 315 E 21st St, New York 345 1st Ave, New York 365 1st Ave, New York 305 E 21st St, New York 344-360 2nd Ave, New York 361 1st Ave, New York 319 E 21st St, New York 347 1st Ave, New York 332 E 20th St, New York 325 E 21st St, New York 341 E 21st St, New York 329 E 21st St, New York 337 E 21st St, New York 363 1st Ave, New York 371 1st Ave, New York 367 1st Ave, New York 301 E 21st St, New York 352 E 20th St, New York 304 E 20th St, New York

Nearby ZIP codes for Colonial Mews - 323 East 21st Street, New York, NY

10001, New York City, NY 10003, New York City, NY 10009, New York City, NY 10011, New York City, NY 10012, New York City, NY 10016, New York City, NY 10017, New York City, NY 10110, New York City, NY 10119, New York City, NY 10165, New York City, NY 10167, New York City, NY 10169, New York City, NY 10170, New York City, NY 10171, New York City, NY 10172, New York City, NY 10173, New York City, NY 10174, New York City, NY 10177, New York City, NY

Frequently asked questions

What is the year built for Colonial Mews - 323 East 21st Street, New York, NY 10010?

The development at Colonial Mews - 323 East 21st Street, New York, NY 10010 was built in 1910.

What is the total square footage of Colonial Mews - 323 East 21st Street, New York, NY 10010?

Colonial Mews - 323 East 21st Street, New York, NY 10010 has a total of 11,718 square feet.

What is the assessed value of Colonial Mews - 323 East 21st Street, New York, NY 10010?

Colonial Mews - 323 East 21st Street, New York, NY 10010 is currently assessed at $1,651,500.

What are the property taxes for Colonial Mews - 323 East 21st Street, New York, NY 10010?

The property taxes for Colonial Mews - 323 East 21st Street, New York, NY 10010 total $192,629.

How many residential units does this building have?

This building has 18 residential unit(s).

Disclaimer

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