The Foundry at 310 East 23rd Street: Apartments for Sale & Rent

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Last updated on Feb 7, 2026

The Foundry,
310 East 23rd Street

The Foundry is a converted factory building in Gramercy Park with 136 co-operative apartments across two buildings. It features high-barrel vaulted ceilings, amenities like a roof deck and bike storage, and allows pets, sublets, and pied-a-terres. Currently, 2 apartments are for sale.

All Apartments For Sale (2)
Recent Sales (18) $989 Avg. price/ft²
All Units in Building (136)

Apt. 4B
Quick view: 11 photos

Studio

1 bath

$550,000

Jan 16, 2026

24 days

Apt. 2B
Quick view: 18 photos

Studio

1 bath

$480,000 -3.8%

Jun 13, 2025

241 days

#4B: $550,000 - Studio

#2B: $480,000 (-3.8%) - Studio

#4B: $550,000 - Studio

#2B: $480,000 (-3.8%) - Studio

Apt. 7J

Studio

1 bath

$590,000

Feb 2, 2026

Apt. 5B

1 bed

1 bath

600 ft²

$520,000 -3.5%

$867

$565,000

Oct 23, 2025

Apt. 7C

Studio

1 bath

495 ft²

$556,000 -1.6%

$1,123

$565,000

Aug 8, 2025

Apt. 6A

$1,100,000

May 28, 2025

Apt. 5A

1 bed

1.5 baths

$725,000 -12.1%

$825,000

May 28, 2025

Apt. 5D

$1,190,000

May 16, 2025

Apt. 9J

Studio

1 bath

$585,000 -2.3%

$599,000

Jan 28, 2025

Apt. 10J

Studio

1 bath

$590,000 -0.8%

$595,000

Aug 15, 2024

Apt. 3B

Studio

1 bath

500 ft²

$495,000

$990

Jan 31, 2024

Apt. 4D

$320,000

Oct 17, 2023

Apt. 11E

Studio

1 bath

500 ft²

$600,000 +3.4%

$1,200

$580,000

May 16, 2023

Apt. 7A

2 beds

1 bath

$999,000

Dec 2, 2022

Apt. 10C

1 bed

1 bath

$575,000 -3.4%

$595,000

Nov 30, 2022

Apt. 2D

Studio

1 bath

550 ft²

$450,000 +1.1%

$818

$445,000

Sep 14, 2022

Apt. 2B

2 beds

2 baths

$1,365,000

May 19, 2022

Apt. 4B

Studio

1 bath

$417,000 -10.3%

$465,000

Apr 14, 2022

Apt. 6B

2 beds

2 baths

1,250 ft²

$1,172,500 -8%

$938

$1,275,000

Mar 24, 2022

Apt. 2H

Studio

1 bath

$510,000 -7.3%

$550,000

Mar 11, 2022

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Overview of The Foundry at 310 East 23rd Street

The Foundry is a two-building converted factory building at 310 and 312 East 23rd Street between First and Second Avenues in Gramercy Park. It contains 136 co-operative apartments in a condop. There are 100 apartments in the 12-story building at 310 East 23rd Street and 36 in the 10-story building at 312 East 23rd Street. It is a converted steel and concrete factory building originally built in 1900 and maintains some of its classic features like high-barrel vaulted ceilings. Amenities include a common furnished roof deck with a grill, a resident super, elevator, common laundry room, bike and basement storage, and a video intercom. The neighborhood itself offers the Gramercy Theater, the East River Promenade, and easy access to the 6 and N/R/W trains. Gifts, guarantors, pied-a-terres, sublets, and pets are all allowed.

Doorman

None

Type

Condop

Year Built

1905

Apartments

136 (view all units)

Floors

Pets: Allowed

Neighborhood

Gramercy Park (Manhattan)

Min Down

20%

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3D Aerial Views

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Amenities

High-Rise
Pre War
Resident Storage
Rooftop Terrace
Washer/Dryer in building
Elevator
Outdoor Entertainment Space
Laundry Room
Bike Room
Live-In Superintendent
Terraces / Balconies

Area Map StreetView

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at Park Ave 0.36 miles

at 3rd Ave and 14th 0.43 miles

Pros & Cons

Handsome, pre-war buildings
Canopied entrances
Roof deck
Bicycle room
Live-in superintendent
Not far from FDR Drive
Laundry

Many apartments
No garage
No sidewalk landscaping

CityRealty Rating

/44

Architecture

/36

Location

/39

Features

Editor’s Points

CITYREALTY
RATING

How is the CityRealty Rating calculated?
Architecture

30+ remarkable

20-29 distinguished

11-19 average

< 11 below average
Location

27+ remarkable

18-26 distinguished

9-17 average

< 9 below average
Features

22+ remarkable

16-21 distinguished

9-15 average

< 9 below average
CityRealty’s Ratings Explained

Sales History

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Sales Summary

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Sales History by Apartment Size

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Pricing Comparison of Similar Buildings

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Editorial Coverage

Alternate Addresses

304 East 23 Street
306 East 23 Street
308 East 23 Street
312 East 23 Street
312 East 23rd Street

Brooklyn Point

between Gold Street & Flatbush Avenue Extension

Downtown Brooklyn

Tax-abated condos with panoramic NYC views Studio - 3-bed condos starting from $1M Immediate Occupancy | Call to schedule your tour

Studios starting at $950,000
1 beds starting at $1,300,000
2 beds starting at $2,132,610
3 beds starting at $2,995,000

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RLS IDX Data display by CityRealty.com, LLC. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., All rights reserved. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and for no listing shall the number of bedrooms listed be considered a legal conclusion.

All closed sales data has been provided by the New York City Department of Finance via the Automated City Register Information System (ACRIS). No warranty or representation is made as to the accuracy of any data provided by ACRIS or any other sources.

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An equal housing opportunity

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The Foundry,310 East 23rd Street

Overview of The Foundry at 310 East 23rd Street

Maps &3D Aerial Views

Amenities

Pros & Cons

CityRealty Rating

How is the CityRealty Rating calculated?

Sales History

Sales Summary

Sales History by Apartment Size

Pricing Comparison of Similar Buildings

Editorial Coverage

Alternate Addresses

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The Foundry,
310 East 23rd Street

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