Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $3,220,000

· Closed March 23, 2023

21 E 90TH Street #5A
Closed For Sale Co-op

$3,220,000

21 E 90TH Street #5A

Upper East Side, Manhattan

null

MLS® #RLS10837094

RLS at REBNY

Listing by Brown Harris Stevens Residential Sales LLC

3

Bedrooms

3

Baths

N/A

Sq. Ft.

1927

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3
Year Built 1927
Ownership Co-op
Maintenance $5,002/mo
Neighborhood Upper East Side
Floor 5 of 14

Property Highlights

  • Exposure: North,South facing
  • Style: Prewar architecture
  • Character: Pre-war building (1927)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 7
Baths 3 Full
Floor 5 of 14
Exposure North,South
Pets Yes
Cross Street Fifth and Mad
Year Built 1927
Architectural Style Prewar
Parcel # 1502-0017-00021-000-000005A

Listing History

Event Date Price Change
Listed Jul 5, 2022 $3,750,000 -
Price Reduced Mar 28, 2023 $3,500,000 -6.7%
Currently May 3, 2026 $3,220,000 -8.0%

Description

Rarely available Classic 7 in the heart of Carnegie Hill and less than a block from Central Park. Located off a semi-private elevator landing, this lovely, prewar home offers a grand entry gallery, 3 bedrooms (each with en suite bathrooms), a gracious living room, a formal dining room and a windowed, eat-in kitchen with a separate breakfast area (or office.) This corner unit gets wonderful southern light throughout the day and is perfect for elegant entertaining and easy, everyday living. Other details include beautifully maintained hardwood floors, an abundance of storage, thru wall air conditioning and a vented washer/dryer. Built in 1927, by notable New York architect, George F. Pelham, 21 East 90th Street is a full service building on one of the prettiest streets in all of Manhattan. This historic block was selected by Andrew Carnegie because it is the high point of what is now known as Carnegie Hill. This quiet, tree-lined street is also home to the Cooper Hewitt Museum and its enclosed garden (a national historic landmark) as well as the magnificent neo-gothic Limestone Church of the Heavenly Rest. This incredible location is close to several of the city's best schools (both public and private) and less than a block from the Engineer's Gate entrance to the park and reservoir.

Features & Amenities

Interior Features

Building Washer Dryer Install Allowed

Appliances

Dryer Washer Dryer Allowed Washer

Building Information

Building null
Building Data View Compliance & Permits
Total Units 48
Stories 14
Style Prewar

Financial Details

Maintenance $5,002/mo
Original Price $3,750,000
Sale Price $3,220,000
Previous Price $3,500,000

The Upper East Side remains the gold standard for classic New York elegance. Known for 'Museum Mile' and its low-traffic, 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

338

Median Asking Price

$1.67M

Median $/Sqft

$1,534

Avg Days on Market

N/A

New This Week

29

Price Reduced

30%

Sold (30 Days)

36

Median Sale Price

$1.53M

Live data from RLS at REBNY • Updated 5/3/26, 4:18 AM EST

Similar Listings in Upper East Side

View All

Location

Loading map...

21 E 90TH Street #5A, Upper East Side, New York County • Near Fifth and Mad

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

2013
Year Built
13 years old
4
Floors
4
Residential Units
R6B
Zoning District
Primarily Residential Mixed Use

Tax & Assessment

Assessed Value: $447,750
Land Value: $56,700
Exemptions: $0

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

Lot Area: 1,263 SF
Building Area: 4,670 SF
Built FAR: 3.7
Allowed FAR: 2

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 $5,002 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 3 bedrooms and 3 full bathrooms.

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.

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: RLS10837094
First Listed: 7/5/2022
Price Changed: 3/28/2023
Closed: 3/23/2023
Contract Date: 7/5/2022

Listing Courtesy of Brown Harris Stevens Residential Sales LLC - Wendy Sarasohn

Listing Contact: (212) 906-9366

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 5/3/2026 at 8:18 AM 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.

View Active Listings Call Milton