Diamond House, 170 East 77th Street, NYC - Condo Apartments

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Diamond House,
170 East 77th Street

Doorman condo located in Lenox Hill, between Third Avenue & Lexington Avenue

Apartments For Sale (2)
For Rent (1)
Recent Sales (6) $1,334 Avg. price/ft²
All Units in Building (70)

Apt. 2D
(6 Photos)

2 beds

2.5 baths

1,357 ft²

$1,290

$1,750,000 in contract

Sep 7, 2025

89 days

Apt. 7G
(10 Photos)

2 beds

2 baths

1,282 ft²

$1,325

$1,699,000 -2.9% in contract

Oct 29, 2024

402 days

in contract

#2D: $1,750,000 - 2 beds

in contract

#7G: $1,699,000 (-2.9%) - 2 beds

Apt. 4B
(8 Photos)

3 beds

2,241 ft²

$86

$16,000 in contract

Oct 24, 2025

42 days

in contract

#4B: $16,000 - 3 beds

Apt. 6G

2 beds

2 baths

1,282 ft²

$1,680,000 -1.2%

$1,310

$1,700,000

Aug 20, 2025

Apt. 9C

4 beds

4 baths

2,500 ft²

$3,350,000 -8.2%

$1,340

$3,650,000

Sep 29, 2023

Apt. 10E

1 bed

1 bath

895 ft²

$1,125,000 -0.4%

$1,257

$1,129,000

Jun 10, 2022

Apt. 7C

2 beds

2 baths

1,117 ft²

$1,600,000

$1,432

May 26, 2022

Apt. 2F

5 beds

4.5 baths

3,531 ft²

$4,999,999

$1,416

May 11, 2022

Apt. 5D

2 beds

2 baths

1,357 ft²

$1,695,000 -3.1%

$1,249

$1,750,000

Jan 27, 2022

View Full Sales History

Overview of Diamond House at 170 East 77th Street

Diamond House, built in 1940 and converted to condominiums in 2007, is an 11-story prewar building featuring 70 units at 170 East 77th Street. The building's distinctive architecture includes a dramatic step-down entrance with a metal-and-glass marquee leading to a stunning skylit lobby with curved glass walls.

Residences range from 895 to 2,500 square feet, featuring elegant prewar details like sunken living rooms and beamed ceilings. Many units offer modern amenities including high-end kitchens with premium appliances, marble bathrooms, and in-unit washers/dryers. The full-service building provides residents with 24-hour doorman service, a well-equipped fitness center, private storage facilities, and a beautifully landscaped roof deck.

Centrally positioned in the Lenox Hill neighborhood of the Upper East Side, Diamond House offers exceptional convenience to Lenox Hill Hospital, public transportation, fine dining establishments, and upscale shopping. The location provides easy access to both crosstown buses and subway lines, making it an ideal residence for those seeking refined Upper East Side living with modern amenities.

Year Built

1940

Converted: 2007

Apartments

Floors

Pets: Allowed

Neighborhood

Lenox Hill (Manhattan)

Min Down

20%

70Apartments

View All Past
Sales & Rentals
in Building

Amenities

Concierge
FT Doorman
Pre War
Resident Storage
Central AC
Rooftop Terrace
Washer/Dryer in building
Fitness Center
Outdoor Entertainment Space
In-Unit Washer/Dryer
Bike Room
Live-In Superintendent
Terraces / Balconies

Area Map StreetView

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Maps &
3D Aerial Views

View school info, local attractions, transportation options & more.

Experience amazing 3D aerial maps and fly throughs.

Nearby Subways

at Lexington Ave 0.05 miles

at Lexington Ave 0.48 miles

Pros & Cons

Located in heart of Lenox Hill
Doormen
Concierge
Stunning lobby with curved glass walls
Handsome entrance marquee
High-end kitchen appliances including Sub-Zero, Bosch, and Thermador
Beautifully landscaped roof deck with outdoor entertainment space
Half a block from Lenox Hill Hospital and subway
Convenient shopping
In-unit washer/dryer
Private storage facilities available
Elegant prewar details with beamed ceilings
Full-service building with live-in super

No balconies
High traffic area due to hospital proximity and central location

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

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Pricing Comparison of Similar Buildings

View Detailed Comparison

Editorial Coverage

Bergen Brooklyn

between 3rd Avenue & 4th Avenue

Boerum Hill

World-class design, rooted in local charm. Crafted facade by Frida Escobedo | Textured interiors by Workstead. Early 2025 Occupancy.

Studios starting at $895,000
1 beds starting at $1,125,000
2 beds starting at $2,750,000
3 beds starting at $2,925,000
4 beds starting at $5,350,000
5 beds starting at $5,850,000

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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. ©2025 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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Diamond House,170 East 77th Street

Doorman condo located in Lenox Hill, between Third Avenue & Lexington Avenue

Overview of Diamond House at 170 East 77th Street

Amenities

Maps & 3D Aerial Views

Nearby Subways

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

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Diamond House,
170 East 77th Street

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