Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
21 E 87th Street #7B
Interested in this property?
Active For Sale Co-op

$5,750,000

$2,180 per sq ft

21 E 87th Street #7B

Carnegie Hill, Manhattan

MLS® #RLS20081893

RLS at REBNY

Listing by Sothebys International Realty

4

Bedrooms

4

Baths

2,638

Sq. Ft.

1927

Year Built

Quick Summary

Bedrooms 4
Bathrooms 4
Living Area 2,638 sq ft
Lot Size 19,134 sq ft
Year Built 1927
Ownership Co-op
Maintenance $6,416/mo
Neighborhood Carnegie Hill
Floor 7 of 13

Property Highlights

  • Views: City
  • Exposure: East,South facing
  • Character: Pre-war building (1927)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 9
Baths 4 Full
Floor 7 of 13
View City
Exposure East,South
Pets Yes
Year Built 1927
Living Area 2,638 sq ft
Structure Type MultiFamily
Furnished Unfurnished
Lot Size 19,134 sq ft
Block/Lot 01499/0014

Listing History

Event Date Price Change
Listed Apr 7, 2026 $6,195,000 -
Currently May 22, 2026 $5,750,000 -7.2%

Description

21 East 87th Street, #7B Spacious, light flooded, prewar, 9-room apartment in prime Carnegie Hill location, this gracious property has the original floorplan and has been beautifully maintained by the same family for about eighty years. It formerly housed a magnificent, world renowned collection of Old Master drawings. One enters the apartment through an elevator vestibule, shared by one other tenant, into a large foyer leading into a grand, east-facing living room with decorative fireplace and two large, double-hung windows overlooking Madison Avenue. The adjacent formal dining room, easily seating twelve, is linked to the kitchen by a butler’s pantry with sink, refrigerator and dishwasher. In the eat-in kitchen, there is a washer/dryer and, off it, two maid’s rooms with a connecting bath. The four good-sized bedrooms, all accessed from corridors off the foyer, face south and have ample closet space. The primary one, serviced by a large fitted dressing room closet, is situated on the corner and therefore also has a wonderful, additional eastern exposure and a view overlooking the Park Avenue Synagogue. It has an en suite bathroom with separate shower and bathtub. One of the three bedrooms also has a small bathroom en suite, while the other two (one now used as a library) have a larger connecting bathroom that also provides a powder room for the apartment Apartments in the B-line of 21 East 87th Street rarely come on the market. Designed by Emery Roth in 1927, this building, situated near some of the best schools, restaurant and museums in New York City, is one of the most sought-after on the upper Eastside. It is a full-service building with resident super and full-time doormen, as well as such amenities as a gym, a central laundry, bike storage, and a private storage unit. There is a 2% flip tax. 65% financing permitted. Current monthly assessment of $515.08 through 2026.

Features & Amenities

Interior Features

Common On Floor Common Area Laundry Room In Unit

Building Amenities

Elevators

Appliances

Dryer Washer Dryer Stacked Dishwasher Washer

Building Information

Building Data View Compliance & Permits
Total Units 72
Stories 13
Structure MultiFamily

Financial Details

Maintenance $6,416/mo
Original Price $6,195,000
Previous Price $6,195,000

Carnegie Hill is a low-traffic residential section of the Upper East Side defined by proximity to Central Park and Museum Mile. The area features low-rise historic architecture and large pre-war cooperatives, with landmarked blocks and boutique retail along Madison Avenue.

Carnegie Hill Live Market Data

View Neighborhood

Active Listings

137

Median Asking Price

$2.75M

Median $/Sqft

$1,702

Avg Days on Market

N/A

New This Week

4

Price Reduced

36%

Sold (30 Days)

6

Median Sale Price

$2.81M

Live data from RLS at REBNY • Updated 5/22/26, 5:29 PM EST

Similar Listings in Carnegie Hill

View All

Location

Loading map...

21 E 87th Street #7B, Carnegie Hill, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1925
Year Built
101 years old
2
Floors
1
Residential Units
R2
Zoning District
One Family Dwellings

Tax & Assessment

Assessed Value: $117,480
Land Value: $27,660
Exemptions: $0

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 4,000 SF
Building Area: 2,290 SF
Built FAR: 0.57
Allowed FAR: 0.75

Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)

Want help estimating ownership costs or understanding building compliance? Let's discuss

Frequently Asked Questions

Common questions about this property

The current listed monthly maintenance are $6,416 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $0, or roughly $0 per month. Verify the current assessment with your attorney before closing.

This property has 4 bedrooms and 4 full bathrooms.

The listed interior living area is 2,638 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1927, making it approximately 99 years old.

This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.

Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.

At the current list price of $5,750,000 for 2,638 sq ft, the asking price per square foot is approximately $2,180. This figure is for reference only and may differ from appraised or assessed values.

To schedule a private showing, contact Milton Coste at (917) 416-7433 or mcoste@kwnyc.com. Per REBNY guidelines effective 2025, a Buyer Representation Agreement is required before a buyer's broker can show you properties. You may attend open houses independently without one.

Have a question not answered here?

(917) 416-7433
MLS® ID: RLS20081893
First Listed: 4/7/2026
On Market: 4/7/2026
Price Changed: 4/24/2026
Contract Date: 4/7/2026

Listing Courtesy of Sothebys International Realty - Armin B Allen

Listing Contact: (917) 533-7949

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.

Broker Commission Disclosure: Broker commissions are not set by law and are fully negotiable.

Buyer Notice: Planning to work with a buyer's broker? A Buyer Representation Agreement is required before your broker can show you properties, per REBNY/UCBA guidelines (effective 2025). You may attend open houses independently without one.

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 5/22/2026 at 9:29 PM UTC

Buying a Co-op? Start Here

Co-op vs. Condo: Which Is Right for You?

Ownership structure, board approval, financing: the full comparison.

Read article

How to Ace Your Co-op Board Interview

What boards look for, common questions, and how to prepare.

Read article

HDFC Co-ops: Complete Guide

Income limits, resale caps, and how to qualify for affordable co-ops.

Read article

NYC Mansion Tax: 2026 Guide

How the tiered mansion tax works for purchases over $1M.

Read article

Interested in this property?

Your info is secure and never shared.

Call Text Email