Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

Under Contract – Backup offers may be accepted

51 W 81ST Street #6KL

Pending · Listing by Corcoran Group

51 W 81ST Street #6KL

Upper West Side, Manhattan

$3,450,000

Interested in this property?
Pending For Sale Co-op

$3,450,000

51 W 81ST Street #6KL

Upper West Side, Manhattan

GALAXY

MLS® #RLS20098972

RLS at REBNY

Listing by Corcoran Group

4
Bedrooms
3
Baths
N/A
Sq. Ft.
1905
Year Built

Quick Summary

Bedrooms 4
Bathrooms 3
Year Built 1905
Ownership Co-op
Maintenance $4,281/mo
Neighborhood Upper West Side
Floor 6 of 13

Property Highlights

  • Views: City
  • Exposure: North,West facing
  • Character: Pre-war building (1905)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 7
Baths 3 Full
Floor 6 of 13
View City
Exposure North,West
Pets Yes
Year Built 1905
Structure Type HighRise
Basement Other
Block/Lot 01195/0001

Listing History

Event Date Price Change
Listed Jun 20, 2026 $3,450,000 -
Currently Sep 23, 2026 $3,450,000 -

Description

Just one block from Central Park on one of the Upper West Side's most desirable tree-lined streets, this sun-filled and grand scale, renovated 7-room duplex seamlessly combines sophisticated design, modern luxuries, and exceptional functionality. Bathed in natural light through oversized west-facing windows, this expansive home enjoys open city views and a thoughtfully designed layout offering 3 to 4 bedrooms and 3 beautifully renovated full bathrooms. Throughout the residence, special features include nearly 10' high ceilings, multi-zone central air conditioning, a built-in speaker system, top-of-line appliances, hardwood floors, custom pocket doors, and an extraordinary abundance of custom-fitted closets and storage. A dramatic custom staircase, highlighted by integrated lighting and open bookshelves, leads to the private lower-level primary suite, a tranquil retreat designed for ultimate comfort. Spacious enough to accommodate a separate den, media lounge, or home office, the suite is exceptionally quiet thanks to double-paned windows that showcase open city views. The luxurious spa-like primary bath is finished in marble with mosaic tile floors, a double vanity, a freestanding deep soaking tub, a seamless glass shower, and ultra-premium DXV American Standard fixtures. Completing this exceptional suite is a remarkable custom dressing room with extensive built-in storage. The upper level is perfectly designed for both entertaining and everyday living, featuring a loft-like expanse with an open living room, formal dining room, and chef's kitchen. Anchored by a large center island with breakfast bar seating, the kitchen is appointed with abundant custom cabinetry, stone countertops, two sinks, two Bosch dishwashers, a vented Bertazzoni gas range oven, and a built-in microwave. A beautifully renovated full bath is conveniently located off the entertaining space for guests. Privately tucked away from the main living areas, the quiet bedroom wing offers three bedrooms, one currently configured as a home office, and an additional renovated full bathroom. Ideally located moments from Central Park, the Museum of Natural History, excellent dining, shopping, and transportation options, Apartment 6KL is a rare opportunity to enjoy gracious duplex living with every modern convenience in the heart of the Upper West Side. 51 West 81st Street, also known as The Galaxy, is an elegant prewar co-op in the heart of the Upper West Side. The Beaux-Arts building was constructed in 1903 and converted to co-op in 1979. The accommodating staff includes a doorman and resident manager. Amenities include a landscaped roof deck with multiple seating areas and panoramic city skyline and Park views, laundry on every floor, and bicycle storage. Elevators, hallways and laundry areas have all been recently updated. Pets permitted.

Features & Amenities

Interior Features

Separate Formal Dining Room High Ceilings Building Other

Exterior Features

Building Roof Deck

Building Amenities

Elevators

Appliances

Dishwasher Washer Dryer Allowed

Building Information

Building GALAXY
Building Data View Compliance & Permits
Total Units 125
Stories 13
Structure HighRise

Financial Details

Maintenance $4,281/mo

The Upper West Side (UWS) is celebrated for its cultural richness and architectural grandeur. Set between Central Park and Riverside Park, the neighborhood provides direct access to green space within the urban grid. Residents enjoy easy access to Lincoln Center, the American Museum of Natural History, and a popular culinary scene. The real estate landscape is famous for its historic brownstones and iconic 'white-glove' apartment buildings along Central Park West and Riverside Drive.

Upper West Side Live Market Data

View Neighborhood

Active Listings

509

Median Asking Price

$1.64M

Median $/Sqft

$1,644

Avg Days on Market

N/A

New This Week

42

Price Reduced

20%

Sold (30 Days)

73

Median Sale Price

$1.37M

Live data from RLS at REBNY • Updated 9/23/26, 7:03 AM EST

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Location

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51 W 81ST Street #6KL, Upper West Side, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1970
Year Built
56 years old
2
Floors
3
Residential Units
R4
Zoning District
Walk-Up Apartments

Tax & Assessment

Assessed Value: $68,220
Land Value: $11,340
Exemptions: $0

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

Lot Area: 2,100 SF
Building Area: 2,184 SF
Built FAR: 1.04
Allowed FAR: 1

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 $4,281 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 4 bedrooms and 3 full bathrooms.

According to MLS records, the building was constructed in 1905, making it approximately 121 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: Pet friendly, dogs allowed,Building Pets Allowed Comments:Pet friendly, dogs allowed. Contact Milton Coste 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: RLS20098972
First Listed: 6/20/2026
On Market: 6/20/2026
Price Changed: 6/20/2026
Pending Since: 7/13/2026
Contract Date: 6/20/2026

Listing Courtesy of Corcoran Group - Deanna E Kory

Listing Contact: (917) 991-2657

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 9/23/2026 at 11:03 AM UTC

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Upper West Side Market Update

73 sales last 30 days · $1.64M median · 7 months supply

Read Full Report

New listings in this building

Quick Facts

Status Pending Type Co-op Neighborhood Upper West Side Borough Manhattan
County New York
Floor 6 of 13
Year Built 1905
First Listed 6/20/2026
Maintenance $4,281/mo

Monthly Costs Estimate

Down Payment 20%

$690,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $4,281
Total Monthly $0

Estimates only. Consult a lender for exact figures.

Mansion tax applies at this price point

New York State charges the buyer a mansion tax on residential purchases at $1,000,000 or more. At this asking price the tier is $3M to $4,999,999 at 1.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$51,750

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

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