Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $3,825,000

· Closed April 16, 2021

170 E 77TH Street #7A/8A
Closed For Sale Condo

$3,825,000

$979 per sq ft

170 E 77TH Street #7A/8A

Upper East Side, Manhattan

Diamond House

MLS® #RLS10614378

RLS at REBNY

Listing by The Corcoran Group

5

Bedrooms

5

Baths

3,909

Sq. Ft.

1940

Year Built

Quick Summary

Bedrooms 5
Bathrooms 5
Living Area 3,909 sq ft
Year Built 1940
Ownership Condo
HOA/Common Charges $5,158.92/mo
Property Taxes $62,304/yr
Neighborhood Upper East Side
Floor 7 of 11

Property Highlights

  • Exposure: East,North,South,West facing
  • Style: Prewar architecture
  • Climate Control: Wall Units

Property Details

Type Condo
Ownership Condominium
Total Rooms 8
Baths 5 Full
Floor 7 of 11
Exposure East,North,South,West
Cooling Wall Units
Pets Yes
Cross Street LEXINGTON AVENUE and 3 AVENUE
Year Built 1940
Living Area 3,909 sq ft
Architectural Style Prewar

Description

Need 48 hours notice for appointments Multiple spaces to create separate work areas for all in this large 5 bedroom, 5 bathroom duplex. Tastefully designed, the apartment offers solid oak hardwood floors, casement windows, and a semi-open windowed chef's kitchen and washer/dryer. With approximately 3,909 SF, there is an abundance of living area and ample storage, offered at a deep value price per square foot. Enter on the first floor into an open gallery and view the split-level, double sunken living room and dining area with large windows and city views with northern light. The windowed kitchen has an island with seating, a 5-burner Gaggenau stove, Thermador double ovens, Subzero wine refrigerator, convection microwave, Bosch dishwasher, Subzero refrigerator/freezer, a large pantry and custom cabinetry by Bulthaup. The upper level has a separate entrance from the elevator landing as well as the staircase. It consists of a corner master bedroom with a custom-designed dressing room, a windowed en suite bathroom with double vanity, a separate stall shower and a soaking tub. In addition, there are two areas for a home office situation, depending on scale needed, they can also be used as a large den/media room as well as an au pair room or housekeeper area with laundry. The 4 additional bedrooms located on the lower level each have their own bathrooms with 2 en suite and 2 directly adjacent to the bedrooms, allowing them to also serve as guest bathrooms. The Diamond House is a full service condominium centrally located on East 77th Street, close to the subway, cross-town bus and the Upper East Side's finest dining and boutiques. Built in 1942 and converted in 2007, the building amenities include a wonderful landscaped roof deck, sky-lit gym and bike room. Storage is available for purchase. Please watch virtual as well.

Features & Amenities

Interior Features

Building Washer Dryer Install Allowed Common Area

Appliances

Dryer Washer

Building Information

Building Diamond House
Total Units 51
Stories 11
Style Prewar

Financial Details

Common Charges $5,158.92/mo
RE Taxes $62,304/yr ($5,192/mo)
Original Price $5,495,000
Sale Price $3,825,000

The Upper East Side remains the gold standard for classic New York elegance. Known for 'Museum Mile' and its quiet, tree-lined streets, the neighborhood offers a refined lifestyle away from the midtown bustle. While famous for its historic cooperatives, the area has seen a recent surge in ultra-luxury new construction condos, particularly along the Second Avenue Subway corridor, making it a top choice for both traditionalists and modern buyers.

Upper East Side Live Market Data

View Neighborhood

Active Listings

332

Median Asking Price

$1.75M

Median $/Sqft

$1,525

Avg Days on Market

N/A

New This Week

28

Price Reduced

27%

Sold (30 Days)

32

Median Sale Price

$1.53M

Live data from RLS at REBNY • Updated 4/18/26, 5:59 AM EST

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Location

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170 E 77TH Street #7A/8A, Upper East Side, New York County • Near LEXINGTON AVENUE and 3 AVENUE

Floor Plans

Floor Plan
MLS® ID: RLS10614378
First Listed: 8/28/2019
Price Changed: 4/22/2021
Closed: 4/16/2021
Contract Date: 10/22/2019

Listing Courtesy of The Corcoran Group - Deborah Kern

Listing Contact: (917) 710-1150

Listing information for certain New York City properties provided courtesy of the Real Estate Board of New York's Residential Listing Service (the "RLS"). The information contained in this listing has not been verified by the RLS and should be verified by the consumer. The listing information provided here is for the consumer's personal, non-commercial use. Retransmission, redistribution or copying of this listing information is strictly prohibited except in connection with a consumer's consideration of the purchase and/or sale of an individual property. This listing 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. This advertisement does not suggest that the broker has a listing in this property or properties or that any property is currently available.

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RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 4/18/2026 at 9:59 AM UTC

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