Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $7,000,000

· Closed June 4, 2019

850 PARK Avenue #10B
Closed For Sale Co-op

$7,000,000

850 PARK Avenue #10B

Upper East Side, Manhattan

MLS® #RLS10886692

RLS at REBNY

Listing by Sotheby's International Realty, Inc.

3

Bedrooms

3.5

Baths

N/A

Sq. Ft.

1913

Year Built

Quick Summary

Bedrooms 3
Bathrooms 4 full, 1 half
Lot Size 15,835 sq ft
Year Built 1913
Ownership Co-op
Maintenance $7,856/mo
Neighborhood Upper East Side
Floor 10 of 12

Property Highlights

  • Views: City
  • Exposure: East,South facing
  • Climate Control: Central Air

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 8
Baths 3 Full, 1 Half
Floor 10 of 12
View City
Exposure East,South
Cooling Central Air
Pets Yes
Year Built 1913
Lot Size 15,835 sq ft
Parcel # 1391-0040-00850-000-000010B

Listing History

Event Date Price Change
Listed Jan 2, 2019 $7,000,000 -
Currently Apr 27, 2026 $7,000,000 -

Description

Perfectly located on Park Avenue at 77th Street, 850 Park Avenue is a distinguished full service pre-war cooperative building designed in 1914. This glamorous 8 room, triple mint condition apartment is perfectly situated on a high floor with wonderfully sunny open city views. The absolutely stunning residence was recently and meticulously renovated to the highest standards. The beautiful sweep of Entertaining Rooms include a wonderful Entrance Gallery as well as a vast Living Room with a cheery Library and a large Dining Room. Each of these rooms enjoy picturesque open city views and loads of light. This is a fabulous entertaining apartment that also boasts an extremely private and super luxurious Master Bedroom Suite overlooking Park Avenue with a white marble clad Bath, extraordinary closets and amazing sunlight. Beyond there is another Bedroom with a beautiful ensuite white marble Bath and tremendous closet space. Offering ample versatility, the adjacent Library includes a Wet Bar and can easily be converted into a Third Bedroom. The fully equipped and stylish chef's Eat-In Kitchen enjoys open views and includes a Laundry Area and a sizable Staff Room/Office with a full size Bath. A gorgeous Pantry and a marble Powder Room complete the layout of this Park Avenue residence. Noteworthy features include extraordinary custom millwork, elegant finishes, multiple zone central air conditioning and heating, exquisite Venetian plaster treatments, soundproof windows and hardwood floors as well as a state-of-the-art sound system. Offered in truly superb immaculate condition, this newly renovated residence was finished to the very highest standards and offers an uber chic take on a classic prewar residence.

Features & Amenities

Interior Features

Eat In Kitchen Building Washer Dryer Install Allowed Common Area

Appliances

Dryer Washer Dryer Allowed Washer

Building Information

Financial Details

Maintenance $7,856/mo
Sale Price $7,000,000

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

342

Median Asking Price

$1.44M

Median $/Sqft

$1,559

Avg Days on Market

N/A

New This Week

30

Price Reduced

28%

Sold (30 Days)

32

Median Sale Price

$1.52M

Live data from RLS at REBNY • Updated 4/27/26, 5:15 PM EST

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Location

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850 PARK Avenue #10B, Upper East Side, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1914
Year Built
112 years old
12
Floors
51
Residential Units
R10
Zoning District
Elevator Apartments Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $21,431,700
Land Value: $4,905,000
Exemptions: $6,870

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

Lot Area: 15,835 SF
Building Area: 149,056 SF
Built FAR: 9.41
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 $7,856 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 3 bedrooms and 3 full bathrooms and 1 half bathroom.

According to MLS records, the building was constructed in 1913, making it approximately 113 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 [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: RLS10886692
First Listed: 1/2/2019
Closed: 6/4/2019
Contract Date: 1/2/2019

Listing Courtesy of Sotheby's International Realty, Inc. - Serena Boardman

Listing Contact: (212) 606-7611

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 4/27/2026 at 9:15 PM UTC

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