New York City  »  10023  »  W End Ave  »  235 W End Ave

The Gemstone - 235 West End Avenue, New York, NY 10023 - Property report

Also known as: 300-308 W 71st St

Property image for The Gemstone - 235 West End Avenue, New York, NY 10023
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Property type

Special Condominium Billing Lot (R0)

Year built

1930

Lot sq. ft.

11,849

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.

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Address
Building name
The Gemstone
Primary address
The Gemstone - 235 West End Avenue
Alternate address(es)
229-235 W End Ave
229-235 Wea
300-308 W 71st St
ZIP code
10023
Neighborhood
Lincoln Square
Borough
Manhattan
Block & lot
01182-7501

Owner

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Building
Property type
Special Condominium Billing Lot (R0)
Building sq. ft.
152,076
Buildings on lot
1
Stories
16
Year built
1930
Basement
N
Tax
Tax year
2026-2027
Tax class
Floor area ratio (FAR)
Commercial FAR
Residential FAR
Buildable area
Zoning & Use
Zoning
Qualified opportunity zone
Residential units
148
Residential sq. ft.
Commercial units
0
Office sq. ft.
Retail sq. ft.
Lot
Frontage(s)
West End Avenue (wide)
West 71 Street (narrow)
Distance to wide street
Lot dimensions
100 ft x 118 ft
Lot sq. ft.
11,849

Area overview

Walk score
94 /100.  Walker's Paradise
Transit score
100 /100.  Rider's Paradise
Bike score
86 /100.  Very Bikeable
School district
3
Community district
7
Closest police station
0.62 Miles
Closest fire station
0.35 Miles

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

Units for The Gemstone - 235 West End Avenue, New York, NY

Unit Sale date Sale price Sq. ft. Price/Sq. ft.
Unit 10A 01/21/2022 675
Unit 10B 01/21/2022 732
Unit 10C 01/21/2022 676
Unit 10D 07/09/2020 777
Unit 10E 11/04/2015 698
Unit 10F 07/09/2018 927
Unit 10G 03/16/1998 648
Unit 10H 02/04/1999 847
Unit 10J 04/01/2008 1,029
Unit 11A 02/13/2015 675
Unit 11B 11/26/1990 732
Unit 11C 04/15/2019 676
Unit 11D 10/03/2022 777
Unit 11E 06/15/2015 698
Unit 11F 07/07/2016 927
Unit 11G 07/22/2015 648
Unit 11H 04/13/2005 847
Unit 11J 01/09/2002 1,029
Unit 12A 08/07/2013 675
Unit 12B 08/30/2021 732
Unit 12C 12/10/1993 676
Unit 12D 01/03/1997 777
Unit 12E 09/06/2006 698
Unit 12F 05/02/2013 927
Unit 12G 09/01/2020 648
Unit 12H 04/12/2024 847
Unit 12J 10/21/1996 1,029
Unit 14A 01/05/1996 675
Unit 14B 04/04/1996 732
Unit 14C 12/17/2024 676
Unit 14D 06/12/1992 777
Unit 14E 10/06/2020 698
Unit 14F 07/30/2008 927
Unit 14G 08/03/1988 648
Unit 14H 10/07/2004 847
Unit 14J 02/22/2002 1,029
Unit 15A 04/04/1996 675
Unit 15B 04/04/1996 732
Unit 15C 04/17/2023 676
Unit 15D 10/03/2018 777
Unit 15E 04/08/2026 698
Unit 15F 03/28/2012 927
Unit 15G 03/28/2012 648
Unit 15H 10/25/2023 847
Unit 15J 12/08/1994 1,029
Unit 16A 08/05/2025 673
Unit 16B 05/03/2002 732
Unit 16C 02/28/2022 676
Unit 16D 03/27/1989 777
Unit 16E 07/10/2017 698
Unit 16F 12/20/2006 927
Unit 16G 07/16/2012 648
Unit 16H 02/10/2023 847
Unit 16J 01/05/2026 1,029
Unit 17A 10/24/2012 675
Unit 17B 04/13/2005 732
Unit 17C 08/08/2023 676
Unit 17D 12/06/2017 777
Unit 17E 09/24/1993 698
Unit 17F 06/28/2023 927
Unit 17G 05/18/2016 648
Unit 17H 05/04/1995 847
Unit 17J 04/04/1996 1,029
Unit 1A 05/17/2019 395
Unit 1B 08/07/1998 332
Unit 1C 11/30/2005 509
Unit 1D 04/11/2014 657
Unit 1E 03/13/2015 677
Unit 1G 12/08/2025 653
Unit 1H 12/27/2018 533
Unit 1I 12/27/2019 348
Unit 1J 08/19/2015 550
Unit 1K 08/19/2015 375
Unit 2A 06/07/2018 675
Unit 2B 06/22/1993 732
Unit 2C 06/08/2015 658
Unit 2D 09/24/2008 777
Unit 2E 07/24/1992 698
Unit 2F 12/12/2018 927
Unit 2G 06/17/1988 648
Unit 2H 06/07/2011 847
Unit 2J 07/28/2022 1,029
Unit 3A 09/24/2024 675
Unit 3B 09/19/2007 732
Unit 3C 02/27/2008 676
Unit 3D 08/06/2007 777
Unit 3E 12/07/2009 698
Unit 3F 07/16/1990 927
Unit 3G 07/19/2021 648
Unit 3H 06/07/2005 847
Unit 3J 06/23/2011 1,029
Unit 4A 09/27/2002 675
Unit 4B 06/29/1988 732
Unit 4C 07/26/2007 676
Unit 4D 02/16/2024 777
Unit 4E 05/01/2003 698
Unit 4F 06/30/2016 927
Unit 4G 12/12/2018 648
Unit 4H 04/29/2009 847
Unit 4J 03/20/1992 1,029
Unit 5A 02/19/1993 675
Unit 5B 08/24/2016 732
Unit 5C 09/08/2015 676
Unit 5D 06/24/2015 777
Unit 5E 06/24/2015 698
Unit 5F 05/09/2017 927
Unit 5G 10/03/2024 648
Unit 5H 11/07/2002 847
Unit 5J 09/25/2002 1,029
Unit 6A 12/12/2023 675
Unit 6B 03/21/2025 732
Unit 6C 10/31/2008 676
Unit 6D 10/21/1988 777
Unit 6E 03/05/2021 698
Unit 6F 04/04/1996 927
Unit 6G 07/07/2023 648
Unit 6H 02/13/2024 847
Unit 6J 08/12/2024 1,029
Unit 7A 01/26/1998 675
Unit 7B 05/20/2005 732
Unit 7C 04/04/1996 676
Unit 7D 04/04/1996 777
Unit 7E 07/08/1998 698
Unit 7F 12/29/2005 927
Unit 7G 06/18/2004 648
Unit 7H 847
Unit 7J 08/11/1992 1,029
Unit 8A 12/07/2017 675
Unit 8B 07/10/2024 732
Unit 8C 05/22/2017 676
Unit 8D 09/25/2025 777
Unit 8E 01/04/2022 698
Unit 8F 08/01/2000 927
Unit 8G 02/15/2010 648
Unit 8H 01/17/2005 847
Unit 8J 09/10/2015 1,029
Unit 9A 10/26/2018 675
Unit 9B 03/03/2025 732
Unit 9C 03/15/2012 676
Unit 9D 10/19/2017 777
Unit 9E 07/09/2003 698
Unit 9F 08/31/2022 927
Unit 9G 08/30/2024 648
Unit 9H 10/26/2009 847
Unit 9J 04/29/2021 1,029
Unit PHA 03/16/2022 889
Unit PHB 10/22/1998 1,134
Unit PHC 11/13/2019 961

Building Description

This 17-story tower at 235 West End Avenue is a holdover from 1928. The composition of the U-shaped building is segmented by belt courses and culminates in a lush roof garden visible from the sidewalks of the Upper West Side. Other pre-war touches include decorative window treatments, the step-up canopied entrance and an ornate cornice. Known as the Gemstone, the 143 apartments were converted to condominiums in 1988.

Residents at 235 West Avenue enjoy access to a fully equipped workout center, a children's playroom, laundry facilities, bike room, additional storage, and roof deck. The Gemstone welcomes dogs and cats, and the classic lobby is always manned. Riverside Park is just across the street and Central Park three blocks away. Crosstown bus service on 72nd Street is one block to the north and the 1, 2, and 3 trains that run under Broadway can be boarded in minutes. The cafes and shops of the Upper West Side are within easy reach of this heritage building.

Ownership

Ownership information for The Gemstone - 235 West End Avenue, New York, NY

Unlock full ownership info — get contact details, including phone numbers and emails for owners and the real people behind LLCs.

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

Sales history for The Gemstone - 235 West End Avenue, New York, NY 10023

No recently recorded sales for this property.

More about New York City property records.

Title documents

No recently recorded documents for this property.

Tax

Property taxes for The Gemstone - 235 West End Avenue, New York, NY

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

This is a condominium building, so there are no property taxes. In a condominium the property taxes are paid by the individual unit owners. If you want to see the property taxes for a particular unit, look at the property report for that unit.

More about New York City property taxes

Permits

Permit information for The Gemstone - 235 West End Avenue, New York, NY

Filing date Job type Job status Job description Initial cost
07/17/2026 Alteration
07/06/2026 Alteration
06/16/2026 Alteration
06/16/2026 Alteration
04/22/2026 Alteration

*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
08/27/2019 C
08/27/2019 C
08/22/2019 B

*Most recent HPD violations on record for this property.

Neighborhood

Lincoln Square residential market stats

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

Median sale price

$1,330,000

-7.6% Y-o-Y

Median price/sq. ft.

$1,578

-4.3% Y-o-Y

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
-

Subway & traffic

Closest station
Broadway & 72nd St at SE Corner
Station lines
1-2-3
Distance (miles)
0.184
View subway map

Access the detailed traffic volume map for The Gemstone - 235 West End Avenue, New York, NY 10023 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. 199 Jessie Isador Straus 8 Yes Public K-5 538 0.16
West End Day School NR No Private 47 0.07
HudsonWay Immersion School NR No Private PK, K-5 22 0.16
HudsonWay Immersion School NR No Private PK, K-5 22 0.16
Congregation B'Nai Jeshurun Heb NR No Private K-7 0 0.17
Manhattan Star Academy NR No Private 66 0.20
Special Music School 8 No Public K-12 295 0.29
The Anderson School 9 No Public K-8 507 0.42
P.S. 87 William Sherman 8 No Public PK, K-5 667 0.44
Nearest middle schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
West End Day School NR No Private 47 0.07
Congregation B'Nai Jeshurun Heb NR No Private K-7 0 0.17
Manhattan Star Academy NR No Private 66 0.20
Manhattan Day School NR No Private PK-8 444 0.21
School Of The Blessed Sacrament School NR No Private PK-8 0 0.26
Special Music School 8 No Public K-12 295 0.29
The Anderson School 9 No Public K-8 507 0.42
Ms 245 The Computer School 8 No Public 6-8 352 0.42
Ms 247 Dual Language Middle School 4 No Public 6-8 199 0.42
Nearest high schools

Name Rating Att. zoned Type Grade range No of students Distance (miles)
West End Day School NR No Private 47 0.07
Manhattan Star Academy NR No Private 66 0.20
Special Music School 8 No Public K-12 295 0.29
High School for Law, Advocacy and Community Justice 5 No Public 9-12 447 0.31
Urban Assembly School for Media Studies 4 No Public 9-12 315 0.31
High School of Arts and Technology 2 No Public 9-12 448 0.31
Manhattan/Hunter Science High School 9 No Public 9-12 477 0.31
High School for Arts, Imagination and Inquiry 3 No Public 9-12 109 0.31
Fiorello H Laguardia High School of Music, Art and Performing Arts 9 No Public 9-12 2,381 0.34
J G B Education Services NR No Private 50 0.36

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

Neighbors for The Gemstone - 235 West End Avenue, New York, NY

324 W 71st St, New York 318 W 71st St, New York 337 W 70th St, New York 339 W 71st St, New York 317 W 71st St, New York 313 W 71st St, New York 338 W 71st St, New York 332 W 71st St, New York 325 W 71st St, New York 343 W 71st St, New York 349 W 71st St, New York 333 W 71st St, New York 329 W 71st St, New York 312 W 71st St, New York 351 W 71st St, New York 335 W 71st St, New York 328 W 71st St, New York 331 W 70th St, New York

Nearby ZIP codes for The Gemstone - 235 West End Avenue, New York, NY

10018, New York City, NY 10019, New York City, NY 10020, New York City, NY 10022, New York City, NY 10036, New York City, NY 10065, New York City, NY 10069, New York City, NY 10103, New York City, NY 10110, New York City, NY 10112, New York City, NY 10152, New York City, NY 10154, New York City, NY 10167, New York City, NY 10169, New York City, NY 10171, New York City, NY 10172, New York City, NY 10173, New York City, NY 10177, New York City, NY

Frequently asked questions

What is the year built for The Gemstone - 235 West End Avenue, New York, NY 10023?

The development at The Gemstone - 235 West End Avenue, New York, NY 10023 was built in 1930.

What is the total square footage of The Gemstone - 235 West End Avenue, New York, NY 10023?

The Gemstone - 235 West End Avenue, New York, NY 10023 has a total of 152,076 square feet.

How many residential units does this building have?

This building has 148 residential unit(s).

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