Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
900 5TH Avenue #6A
Interested in this property?
Active For Sale Co-op

$5,600,000

900 5TH Avenue #6A

Lenox Hill, Manhattan

MLS® #RLS20071727

RLS at REBNY

Listing by Corcoran Group

3

Bedrooms

3

Baths

N/A

Sq. Ft.

1959

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3
Year Built 1959
Ownership Co-op
Maintenance $9,547/mo
Parking Garage
Neighborhood Lenox Hill
Floor 6 of 20

Property Highlights

  • Views: City, Park Greenbelt
  • Exposure: South,West facing
  • Parking: Private garage

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 6
Baths 3 Full
Floor 6 of 20
View City, Park Greenbelt
Exposure South,West
Pets Yes
Year Built 1959
Parking Garage Available
Structure Type HighRise
Basement Other
Block/Lot 01386/0001

Listing History

Event Date Price Change
Listed Feb 12, 2026 $5,600,000 -
Currently May 26, 2026 $5,600,000 -

Description

This coveted corner A-line apartment at 900 Fifth Avenue, reimagined by the current owner to take full advantage of the light and sweeping views, offers the finest in Upper East Side living. Located at the corner of 71st Street and Fifth Avenue and boasting over 42 feet of park frontage, this 3 bedroom, 3 bathroom home is in meticulous condition and offers a rare opportunity for the discerning buyer.

A semi-private elevator landing leads to a spacious entry gallery with a marble floor and custom lighting. The park-facing public rooms have been lofted to offer a grand and airy living/dining space, replete with 14 windows lining Fifth Avenue, graced by tree-top views west and open city views down Fifth Avenue and over The Frick Museum.
The chef's kitchen, which can be closed off for privacy when entertaining, boasts a Dacor oven and six-burner stove-top, a SubZero refrigerator and wine cooler, a built-in Miele convection oven/microwave, a Bosch dishwasher and a breakfast bar. Also facing Fifth Avenue is a large bedroom (currently being used as a den & office) separated by a pocket door, complete with an en-suite bath and a roomy closet.

The other two bedrooms face south and are filled with abundant sunshine all day long. The luxurious primary suite consists of an oversized bedroom, two large dressing areas and several additional closets and custom built-ins. The primary bathroom, done in custom tiles, has 2 sinks, a walk-in shower and a deep soaking tub which is positioned under 3 large windows, offering views over The Frick Gardens. The third bedroom is also generous in scale, with an en-suite bath and a walk-in closet.

The apartment has thru-wall air-conditioning, built-in overhead lighting and automatic shades in every room. There is a separate washer/dryer closet in the hall behind the kitchen, which boasts additional storage.

900 Fifth Avenue is a full-service luxury post-war cooperative designed by Sylvan Bien and built in 1959. The building offers white-glove service including a full-time doorman, a live-in resident manager, a planted roof-top terrace with breathtaking views, a fitness center, a bike-room and a resident's only parking garage. A large storage cage conveys with the apartment. Dogs under 25 lbs are welcome.
There is a 2% flip-tax to be paid by the purchaser and up to 50% financing is permitted, as are pieds-a-terre and international buyers.

Features & Amenities

Interior Features

Building Other Washer Hookup In Unit

Exterior Features

Building Roof Deck

Building Amenities

Bike Storage Concierge

Appliances

Washer Dryer Allowed

Building Information

Building Data View Compliance & Permits
Total Units 50
Stories 20
Structure HighRise

Financial Details

Maintenance $9,547/mo

Lenox Hill occupies a residential section of the Upper East Side, defined by proximity to Central Park, major medical institutions (Memorial Sloan Kettering, Weill Cornell, Lenox Hill Hospital), and the Madison Avenue retail corridor. Housing stock ranges from large pre-war cooperatives to modern condominiums with East River and skyline views.

Lenox Hill Live Market Data

View Neighborhood

Active Listings

632

Median Asking Price

$1.57M

Median $/Sqft

$1,454

Avg Days on Market

N/A

New This Week

17

Price Reduced

30%

Sold (30 Days)

26

Median Sale Price

$1.20M

Live data from RLS at REBNY • Updated 5/26/26, 10:23 AM EST

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Location

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900 5TH Avenue #6A, Lenox Hill, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1958
Year Built
68 years old
20
Floors
52
Residential Units
R10
Zoning District
Elevator Apartments Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $26,622,450
Land Value: $5,399,100
Exemptions: $59,890

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

Lot Area: 11,166 SF
Building Area: 170,106 SF
Built FAR: 15.23
Allowed FAR: 10

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 $9,547 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 1959, making it approximately 67 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: Dogs under 25 lbs allowed,Building Pets Allowed Comments:Dogs under 25 lbs allowed. Contact the listing broker for weight limits or breed restrictions.

To schedule a private showing, contact Milton Coste at (917) 416-7433 or [email protected]. 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: RLS20071727
First Listed: 2/12/2026
On Market: 2/12/2026
Price Changed: 2/12/2026
Contract Date: 2/12/2026

Listing Courtesy of Corcoran Group - Amy N Bader

Listing Contact: (917) 837-6602

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 5/26/2026 at 2:23 PM UTC

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