Last updated on May 20, 2026

166 East 78th Street

166 East 78th Street is a five-story, 10-unit prewar walkup cooperative on the Upper East Side. It is conveniently located near popular amenities and public transportation.

Recent Sales (3) $792 Avg. price/ft²
All Units in Building (10)

Apt. 2B

1 bed

1 bath

$650,000

$695,000

May 19, 2026

Apt. 5A

1 bed

1 bath

$595,000 -8.5%

$650,000

Dec 8, 2025

Apt. 1B

1 bed

1.5 baths

1,073 ft²

$850,000 -14.6%

$792

$995,000

Aug 11, 2022

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Overview of 166 East 78th Street

166 East 78th Street is a five-story, 10-unit prewar walkup cooperative located in the desirable Upper East Side of Manhattan. The building is conveniently situated near a variety of restaurants, shopping options, and entertainment venues, as well as the 77th Street 6 train station, making it an attractive choice for urban living.

The apartments within this charming building feature a blend of old-world charm and modern amenities. Many units boast high ceilings, hardwood floors, and spacious layouts. Notable features include decorative fireplaces, large windows, and fully equipped kitchens with modern appliances. Some apartments also offer private outdoor spaces, such as gardens, enhancing the living experience in this vibrant neighborhood.

Residents benefit from a part-time super and the building's pet-friendly policy, allowing for a welcoming community atmosphere. Additionally, the cooperative permits pieds-à-terre and offers flexible financing options, making it accessible for a range of buyers. With its unique character and prime location, 166 East 78th Street presents a compelling opportunity for those seeking a home in one of New York City's most sought-after areas.

Doorman

None

Type

Co-op

Year Built

1920

Converted: 1984

Apartments

10 (view all units)

Floors

Neighborhood

Lenox Hill (Manhattan)

Min Down

20%

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Amenities

Resident Storage

Area Map StreetView

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at Lexington Ave 0.06 miles

at Lexington Ave 0.43 miles

Sales History

Price/Room (Est)

Why are we displaying the estimated price per room?

For some co-ops, instead of price per square foot, we use an estimate of the number of rooms for each sold apartment to chart price changes over time. This is because many co-op listings do not include square footage information, and this makes it challenging to calculate accurate square-foot averages.

By displaying the price per estimated room count, we are able to provide a more reliable and consistent metric for comparing sales in the building. While we hope that this gives you a clearer sense of price trends in the building, all data should be independently verified. All data provided are only estimates and should not be used to make any purchase or sale decision.

Price/Ft² (Est)

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Sales Summary

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Sales History by Apartment Size

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Editorial Coverage

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3 beds starting at $5,750,000
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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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166 East 78th Street

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Overview of 166 East 78th Street

Maps &3D Aerial Views

Amenities

Sales History

Why are we displaying the estimated price per room?

Sales Summary

Sales History by Apartment Size

Pricing Comparison of Similar Buildings

Editorial Coverage

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Market Data

Market Insight

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Maps &
3D Aerial Views