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923 5th Avenue, New York, NY 10021 Property Information

Q: How many residential units does this building have?

This building has 96 residential units and 5 commercial spaces.

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Address

Primary address	923 5th Avenue
Secondary address	1 E 73rd St
Neighborhood	Lenox Hill

Zip code	10021
Borough	Manhattan
Block & lot	01388-7501

Sales & Tax Overview for 923 5th Avenue, New York

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

Tax class	Register

Lot & Building Information for 923 5th Avenue, New York

Lot sq. ft.	14,800
Lot dimensions	97 ft x 150 ft
Property type	Special Condominium Billing Lot (R0)
Building sqft	172,006
Buildings on lot	1
Stories	20

Year built	1950
Frontage(s)	East 73 Street (narrow) 5 Avenue (wide)

Zoning & Use for 923 5th Avenue, New York

Zoning	Register
Residential units (DOF)	96

Commercial units	5
Residential sqft	Register

Units & Related Parcels

Unit	Sale Date	Sale Price	Sqft	Price/Sqft
Unit 1/2D	02/08/1991		1,497
Unit 10A	08/21/2002		2,845
Unit 10B	06/01/2017	Register
Unit 10C	03/27/2009	Register	1,530	Register
Unit 10E	10/11/1984		1,060
Unit 10F	10/15/2025	Register	1,154	Register
Unit 10G	12/20/2004	Register	1,045	Register
Unit 11A	09/13/1983		1,745
Unit 11B	04/09/2018		1,100
Unit 11C	06/20/2011	Register	1,386	Register
Unit 11D	02/27/2007	Register	1,368	Register
Unit 11E	05/14/2009	Register	1,060	Register
Unit 11F	11/22/2000		1,154
Unit 11G	01/30/2025		1,045
Unit 12A	06/16/1987		1,745
Unit 12B	04/30/2002	Register	1,100	Register
Unit 12C	09/13/1983		1,530
Unit 12E	05/14/2009	Register	1,351	Register
Unit 12F	06/12/1998		1,076
Unit 14A	07/09/2020	Register	1,745	Register
Unit 14B	09/04/1996		1,100
Unit 14C	05/07/2004	Register	1,530	Register
Unit 14D	06/27/2019	Register	1,894	Register
Unit 15-A	03/31/2004	Register	1,745	Register
Unit 15B	11/20/2025	Register	1,100	Register
Unit 15C	05/23/2023		1,530
Unit 15D	05/31/2023	Register	1,894	Register
Unit 16A	09/13/2011	Register	1,756	Register
Unit 16B	04/28/2008	Register	1,016	Register
Unit 16C	12/19/1996		1,530
Unit 16D	11/03/2003	Register	1,894	Register
Unit 17A	05/29/2008	Register	1,661	Register
Unit 17B	03/05/2015	Register	962	Register
Unit 17C	01/27/2012	Register	1,490	Register
Unit 17D	01/27/2012	Register	1,894	Register
Unit 18A	04/01/2014		3,026
Unit 18B	02/10/1993		1,866
Unit 19A	09/16/2019		2,145
Unit 19B	09/16/2019		1,827
Unit 1A	02/24/2021	Register	1,074	Register
Unit 1B	10/25/1984		759
Unit 1C	03/27/2018		1,732
Unit 20A	10/03/2023	Register	2,145	Register
Unit 20B	05/11/2017	Register	1,827	Register
Unit 2A	03/04/2022	Register	1,570	Register
Unit 2B	08/25/2023		1,796
Unit 2C	06/03/2011	Register	1,467	Register
Unit 2E	07/16/2025		1,060
Unit 2F	12/06/2011		1,285
Unit 2G	02/06/1991		1,045
Unit 3&4D	04/04/2006		1,368
Unit 3A	02/23/2023	Register	1,745	Register
Unit 3B	04/25/2024		1,100
Unit 3C	08/24/2018		1,386
Unit 3E	11/22/2013	Register	1,060	Register
Unit 3F	11/22/2013	Register	1,285	Register
Unit 4A	03/23/2022	Register	1,745	Register
Unit 4B	12/07/2018	Register	1,100	Register
Unit 4C	06/17/2010	Register	1,530	Register
Unit 4E	12/19/2024	Register	1,060	Register
Unit 4F	12/29/1992		1,285
Unit 5&6D	01/08/1990		1,386
Unit 5A	09/13/1999		1,745
Unit 5B	01/06/2021		1,100
Unit 5C	02/27/1997		1,386
Unit 5E	09/04/2015		1,060
Unit 5F	10/04/2024	Register	1,285	Register
Unit 5G			1,045
Unit 6A	01/09/1985		1,745
Unit 6B	06/21/2016	Register	1,100	Register
Unit 6C	11/30/2022	Register	1,530	Register
Unit 6E	09/09/1999		1,060
Unit 6F	12/14/2015	Register	1,285	Register
Unit 6G	11/07/1988		1,045
Unit 7-C	01/21/2022	Register	1,386	Register
Unit 7/8D	07/12/2022	Register	1,368	Register
Unit 7A	11/09/2004		1,745
Unit 7B	04/08/1993		1,100
Unit 7E	11/01/2011		1,060
Unit 7F	08/25/2025		1,285
Unit 7G	01/13/2012		1,045
Unit 8A	12/16/1999		1,745
Unit 8B	09/08/1999		1,100
Unit 8C	03/02/2026	Register	1,530	Register
Unit 8E	12/20/2004	Register	1,060	Register
Unit 8F	05/24/2017	Register	1,285	Register
Unit 8G	10/30/2019	Register	1,045	Register
Unit 9/10D	12/20/2004	Register	1,368	Register
Unit 9A	10/24/2022		1,745
Unit 9B	10/24/2022		1,100
Unit 9C	07/09/2024		1,386
Unit 9E	05/05/2003	Register	1,060	Register
Unit 9F	05/05/2003	Register	1,285	Register
Unit 9G	10/20/2020	Register	1,045	Register
Unit GR	06/12/1986		13,898
Unit PHA	06/02/2016		2,704
Unit PHB	01/23/2006	Register
Unit R1	05/13/1988
Unit R2	05/13/1988
Unit R3	12/06/2011
Unit R4	04/01/2011
Unit R5	06/27/2019	Register
Unit R6	11/01/2011

Page 1 of 7 | Show All

Area Overview

Walk Score

Transit Score

Bike Score

School district	2
Community district	8

Closest police station	0.40 Miles
Closest fire station	0.39 Miles

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

Building Description

923 5 Avenue offers one of the rare chances to live on Museum Mile, on the doorstep of Central Park and overlooking the iconic boat pond. The 21-story apartment building claimed its prime location in 1950, replacing five grand Gilded Age mansions that included the revered Randolph Guggenheimer house and its famous marble goddesses. Sylvan Bien drew up the plans for the modern mid-century residential tower with a limestone base and handsome white brick, with a variety of balconies and terraces thrusting towards the park. Dorothy Draper designed the public spaces using 18th century antiques.

The 92 apartments at 923 5 Avenue were converted to condominiums in 1982. Amenities in the revamped building include a fitness center, laundry facilities, full-service garage, and additional storage. The showcase step-down lobby is attended full time by a doorman. Cats and dogs are allowed, and the building also has a subletting-friendly policy. Subway service is available within one-half mile at four stations.

Other Property Data for 923 5th Avenue, New York

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Floor area ratio (FAR) for 923 5th Avenue, New York, NY 10021, 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 923 5th Avenue, New York, NY 10021, including DOB violations, ECB violations, HPD violations and 311 complaints.

Alternate Addresses

You will find all alternate addresses for the property in this section.

1 E 73rd St, New York, NY 10021

About 923 5th Avenue, New York

What is the year built & the total sq. ft. for 923 5th Avenue, New York, NY 10021?

923 5th Avenue, New York, NY 10021 was built in 1950 and has a total of 172,006 square feet.

How many residential units does this building have?

This building has 96 residential unit(s) and 5 commercial spaces.

Ownership Information for 923 5th Avenue, New York

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Property owner name for 923 5th Avenue, New York, NY 10021

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Building contacts for 923 5th Avenue, New York, NY 10021

Building management:	Register
Representatives (from permits):	Register
Tenants:	Register

Commercial Real Estate nearby

Real Estate Reports:

Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens

Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.

Eliza Theiss, Mar 19, 2026 Cheaper in the City? Nearly 100 Communities in Suburban NYC Surpass $1M

New Yorkers planning a move to the suburbs increasingly find their options limited, after suburban home values shot up twice as fast as NYC medians over the last decade. While larger homes and better prices were long the norm outside the five boroughs, today, many NYC buyers find their option restricted to a handful of suburban markets.

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Past Sales & Property History for 923 5th Avenue, New York

Create a free account to view the complete sales history for 923 5th Avenue, New York, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.

No recorded sales for this property.

Title Documents for 923 5th Avenue, New York

Data not available for this property.

Assessment History for 923 5th Avenue, New York

Data not available for this property.

Permits for 923 5th Avenue, New York

The complete history of permits filed for 923 5th Avenue, 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
03/25/2026	Alteration
01/23/2026	Alteration
12/29/2025	Alteration
11/12/2025	Alteration
09/30/2025	Alteration
08/26/2025	Alteration
08/20/2025	Alteration
07/25/2025	Alteration
06/27/2025	Alteration
03/26/2025	Alteration

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More about New York City Property Records

Lenox Hill Residential Market Stats

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

Median Sale Price

$1,505,000

14% YoY

Median Price/Sqft

$1,387

6.2% YoY

Manhattan Median Sale Price

$1,200,000

9.3% YoY

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

Risk

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

Transportation

Distance to Subway

Closest station

Lexington Ave & 77th St at SW Corner

Station lines

Distance (miles)

0.311

View subway map

Bus Routes
Name	5 Av/W 72 St
Line	M4
Distance (miles)	0.081

Schools

Nearest elementary schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance to school (mi)
P.S. 6 Lillie D Blake	9	Yes	Public	PK, K-5	587	0.42
P.S. 6 Lillie D Blake	9	Yes	Public	PK, K-5	587	0.42
The Hewitt School	NR	No	Private	K-12	522	0.16
Buckley School	NR	No	Private	K-9	374	0.22
Rudolf Steiner School	NR	No	Private	PK-12	299	0.31

Nearest middle schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance to school (mi)
Jhs 167 Robert F Wagner	8	Yes	Public	6-8	1,019	0.43
The Hewitt School	NR	No	Private	K-12	522	0.16
Buckley School	NR	No	Private	K-9	374	0.22
Rudolf Steiner School	NR	No	Private	PK-12	299	0.31
Rudolf Steiner School	NR	No	Private	PK, K-12	0	0.31

Nearest high schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance to school (mi)
The Hewitt School	NR	No	Private	K-12	522	0.16
Ramaz School	NR	No	Private	9-12	384	0.25
Ramaz School	NR	No	Private	9-12	0	0.27
Rudolf Steiner School	NR	No	Private	PK-12	299	0.31
Rudolf Steiner School	NR	No	Private	PK, K-12	0	0.31

Neighbors for 923 5th Avenue, New York

Here are the neighbors for 923 5th Avenue, New York, NY 10021.

Address	Square feet	Purchase date	Purchase price
927 Madison Ave, New York	6,555	03/25/2010	$9,150,000
46 E 74th St, New York	7,583	03/18/2010	$8,000,000
59 E 73rd St, New York	5,336
925 5th Ave, New York	9,145	08/09/1984
930 5th Ave, New York	220,003	07/22/2004	$9,708,740
5 E 74th St, New York	9,350	06/21/1991
17 E 74th St, New York	5,700	09/20/2021	$14,800,000
931 Madison Ave, New York	6,721	03/14/1985
924 Madison Ave, New York	8,960	10/09/1987
9 E 74th St, New York	8,305	12/27/2012
11 E 74th St, New York	6,520	05/26/2009	$18,125,000
39 E 74th St, New York	13,965	07/01/2014	$27,250,000
19 E 73rd St, New York	10,239	04/09/1979
940 Madison Ave, New York	12,580	01/17/2001
12 E 74th St, New York	6,360	06/20/1989
7 E 74th St, New York	10,713	03/27/1968
926 5th Ave, New York	13,094	04/18/1979
19 E 74th St, New York	6,355	01/26/2006
29 E 73rd St, New York	4,125	07/11/1975