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343 East 21st Street, New York, NY 10010 Property Information

343 East 21st Street, New York, NY 10010 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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343 East 21st Street, New York, NY 10010 2
static Mapbox map

Address

Primary address 343 East 21st Street
Neighborhood Gramercy Park
Zip code 10010
Borough Manhattan
Block & lot 00927-0124

Sales & Tax Overview for 343 East 21st Street, New York

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Tax class
Estimated property tax $57,237

Lot & Building Information for 343 East 21st Street, New York

Lot sq. ft. 656
Lot dimensions 26.5 ft x 24.75 ft
Property type Single or Multiple Dwelling with Stores or Offices (S9)
Building sqft 2,628
Building dimensions 27 ft x 24 ft
Buildings on lot 1
Stories 4
Year built 1920
Construction type
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Zoning & Use for 343 East 21st Street, New York

Zoning
Residential units (DOF) 3
Commercial units 2
Residential sqft
Retail sqft

Area Overview

Walk Score
Transit Score
Bike Score


School district 2
Community district 6
Closest police station 0.76 Miles
Closest fire station 0.35 Miles

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 343 East 21st Street, New York

New York property reports include comprehensive occupancy, development and violation information. Create a free account to access valuable data points such as:

Floor area ratio (FAR) for 343 East 21st Street, New York, NY 10010, including commercial and residential FAR, FAR as built and usable floor area.
Development maps such as planimetric, zoning, urban landscape, and HPD alternative enforcement program maps.
Violations for 343 East 21st Street, New York, NY 10010, including DOB violations, ECB violations, HPD violations and 311 complaints.

About 343 East 21st Street, New York

How many square feet does 343 East 21st Street, New York, NY 10010 have?

This Single or Multiple Dwelling with Stores or Offices (S9) located at 343 East 21st Street, New York, NY 10010 has a total of 2,628 square feet.

What is the year built & the current market value of 343 East 21st Street, New York, NY 10010?

343 East 21st Street, New York, NY 10010 was built in 1920 and has a current tax assessor's market value of $2,456,000.

How many commercial spaces does this building have?

This building has 2 commercial spaces available for lease.

Ownership Information for 343 East 21st Street, New York

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Property owner name for 343 East 21st Street, New York, NY 10010
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Building contacts for 343 East 21st Street, New York, NY 10010
Building management:
Representatives (from permits):
Tenants:
Real Estate Reports:
Laura Pop-Badiu, Dec 11, 2025 How to Build Property Owner Lists: Steps, Pro Tips & What to Avoid
In this guide, we’ll walk you step by step through how to build property owner lists inside the PropertyShark platform, how to customize them for your goals and how to avoid common mistakes.
Laura Pop-Badiu, Sep 10, 2025 How to Find Comps for Commercial Real Estate: A Step-by-Step GuideĀ 
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Past Sales & Property History for 343 East 21st Street, New York

Create a free account to view the complete sales history for 343 East 21st Street, New York, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.

No recorded sales for this property.

Title Documents for 343 East 21st Street, New York

To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.

Date Type Amount Party 1 Party 2 Doc image
05/23/2011 - D
06/14/2011 - R
Deed
(2011052400917001)
07/07/1977 - R Mortgage
(1680008576968)
07/07/1977 - R Assignment, Mortgage
(1670008576967)
07/07/1977 - R Assignment, Mortgage
(1660008576966)
07/07/1977 - R Deed
(1650008576965)
06/14/1977 - R Deed
(1380008576138)
06/14/1977 - R Deed
(1370008576137)
12/30/1971 - R Deed
(1560008498456)
05/19/1971 - R Agreement
(1490008488649)
05/19/1971 - R Agreement
(1480008488648)
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R: Recorded date
D: Document date

Property Taxes for 343 East 21st Street, New York

Access detailed property tax data for 343 East 21st Street, New York, NY 10010. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Property tax: $52,997
Estimated property tax: $57,237
Tax assessor's market value: $2,456,000
Assessed value: $1,105,200

Assessment History for 343 East 21st Street, New York

Here's the assessment & property tax history for 343 East 21st Street, New York, including the evolution of the total tax rate and corresponding property tax.

Year Market value Assessed value Taxable Tax rate % Base tax Property tax Year over year change
2025/26 $2,456,000 $1,105,200 $426,058 12.439% $52,997 $52,997 +3.51%
2024/25 $2,178,000 $980,100 $409,613 12.5% $51,202 $51,202 +7.98%
2023/24 $2,240,000 $1,008,000 $379,272 12.502% $47,417 $47,417 +1.92%
2022/23 $1,867,000 $840,150 $379,272 12.267% $46,525 $46,525 +7.43%
2021/22 $2,032,000 $914,400 $353,955 12.235% $43,306 $43,306 +7.72%

Permits for 343 East 21st Street, New York

The complete history of permits filed for 343 East 21st Street, New York, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Filing date Job type Job status Job description Initial cost
11/14/2001 Alteration type 3
         
         
         
         
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Manhattan Commercial Market Stats

Access a detailed real estate market overview of Manhattan so you can assess current trends, property values, types of properties sold and transaction volume. View the median price per sqft in Manhattan and compare it to other boroughs in New York City.

Median Price/Sqft Q1/2026
$797
19.7% YoY
Median Price/Sqft Q4/2025
$606
-17.5% YoY
Median Price/Sqft 2025
$656
-5.9% YoY

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

Risk

FEMA flood zone(s): X (See more on map)
Hurricane evacuation zone: 3 (See more on map)

Transportation

Distance to Subway
Closest station 1st Ave & 14th St at NE Corner
Station lines L
Distance (miles) 0.326
View subway map
Bus Routes
Name 1 Av/E 20 St (M23 Non-Stop)
Line M23+
Distance (miles) 0.036

Neighbors for 343 East 21st Street, New York

Here are the neighbors for 343 East 21st Street, New York, NY 10010.

Address Square feet Purchase date Purchase price
335 E 22nd St, New York 6,095 06/18/2025 $3,400,000
383 1st Ave, New York 26,769 09/11/2015 $18,500,000
301 E 22nd St, New York 189,616 05/24/1985
341 E 22nd St, New York 6,295 05/05/2016 $6,270,000
320 E 23rd St, New York 153,800 09/30/1993
338 E 22nd St, New York 8,885 04/25/2007 $7,150,000
340 E 22nd St, New York 8,885 04/25/2007 $7,150,000
332 E 22nd St, New York 11,813 09/25/2025
336 E 22nd St, New York 7,377
312 E 22nd St, New York 20,425
321 E 22nd St, New York 81,500 08/31/2017 $60,928,000
375 1st Ave, New York 9,900 05/03/2005 $3,125,000
373 1st Ave, New York 3,740 09/01/1993
380 2nd Ave, New York 182,258 06/30/1997
320 E 22nd St, New York 67,048 03/03/2016 $87,500,000
371 1st Ave, New York 15,838 02/21/1986
377 1st Ave, New York 6,183 10/23/2015 $6,000,000
379 1st Ave, New York 6,110
367 1st Ave, New York 5,702 05/15/2002
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