Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $6,699,000

· Closed July 2, 2019

850 PARK Avenue #2B/1C
Closed For Sale Co-op

$6,699,000

$1,456 per sq ft

850 PARK Avenue #2B/1C

Upper East Side, Manhattan

MLS® #RLS10543371

RLS at REBNY

Listing by Stribling & Associates

7

Bedrooms

4.5

Baths

4,600

Sq. Ft.

1913

Year Built

Quick Summary

Bedrooms 7
Bathrooms 5 full, 1 half
Living Area 4,600 sq ft
Lot Size 15,835 sq ft
Year Built 1913
Ownership Co-op
Maintenance $10,804/mo
Neighborhood Upper East Side
Floor 2 of 12

Property Highlights

  • Exposure: East,North facing
  • Fireplace: Wood-burning or decorative fireplace
  • Style: Prewar architecture

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 12
Baths 4 Full, 1 Half
Floor 2 of 12
Exposure East,North
Cooling Central Air
Pets Yes
Year Built 1913
Living Area 4,600 sq ft
Architectural Style Prewar
Lot Size 15,835 sq ft

Listing History

Event Date Price Change
Listed Mar 6, 2019 $7,495,000 -
Currently Apr 27, 2026 $6,699,000 -10.6%

Description

Offering a remarkable and rare triplex home in a distinguished Park Avenue building. Own three levels of connected space including an air-filled, glass-enclosed junior squash court. There is unquestionably something for every occupant in this striking and elegant home. All floors overlook the picturesque view of charming townhouses on 77th Street and Park Avenue, with most of the major windows featuring oversized Palladian arches. The top floor includes two main bedrooms, two smaller bedrooms and a master suite with a well-designed dressing room, all with detailed, investment-grade millwork. There are four full bathrooms, each incorporating custom Italian tile. The stately public rooms often delight guests with the octagonal Jeffersonian foyer, Robert Adams ornamental living room ceiling and a gracious dining room. These three classic rooms may elegantly entertain 150 people for cocktails, with the dining room alone seating 48. Major dignitaries, institutional leaders, significant sports figures and corporate scions have all been honored in these spaces. The appealing, wainscoted eat-in kitchen houses a new 800-pound Pro 48 Sub-Zero refrigerator, Viking grill-stove, Miele dishwasher, convection oven, washer/dryer, and a marble-topped family dining table. Pet-friendly details abound, with a built-in sheltered and festooned private pet space and a street-viewing observation stair deck, for full-time pet amusement. A brass-balustraded staircase from the kitchen leads to a middle floor featuring two studies or bedrooms, and a junior squash court/gymnasium which could easily be converted into a home theater or art studio. Additionally, just down the hall there is a wet pantry and a half bath. This layout offers an oasis from the activity of the main floor above, allowing for an effective and productive home office. The bottom floor contains a small but complete independent apartment including a bookshelf-filled bedroom, Clive Christianson kitchen, and a full brick-walled Soho bathroom. This self-contained enclave with a door leading directly to the street has housed many a summer tutor, staff member and itinerant family member and/or friend. The flowing and vast flexible spaces offer something for everyone, be it grand entertaining space for a Julliard piano concerto, or quiet leeway for reflection and creativity. The floor-by-floor independent egress, particularly the middle floor door to the lobby allows for easy street access on a rainy dog-walking night, or a snowy boot-stomping repository. Technologically, the three levels are integrally connected with the recent CAT wiring and FIOS, allowing for a unified audio, Wi-Fi, cable and phone/intercom system. There are four separate AC zones, with the bottom floor condenser located in a coveted sidewalk cave. The entity encompasses two legally-separable spaces. The current owners have lovingly crafted every corner and every shelf with a purpose: be it glass rows for seasonal Hermes scarves in the master bedroom, monkey bars in the pantry or lit glass shoe shelves in the second bedroom for Prada platform pumps. Interestingly, the current owners are only the second occupants of the space as the builder, Rouse & Goldstone, gave this prized escape to his daughter upon the building's completion in 1914. Many original, historic Golden Era details remain, including beseeching cove ceilings, paneled frame-molded walls, elegant French doors, crystal doorknobs and stunning architectural crown moldings throughout. This unique space is so extensive and flexible that feels like a country home in the City with Central Park just two blocks away, yet offering the cultural significance of a quick jaunt to the Met. This extraordinary layout at 850 Park allows the new owner to engage in an adventure to be successfully navigated with joy, entertainment and fulfillment.

Features & Amenities

Interior Features

Separate Formal Dining Room Entrance Foyer Eat In Kitchen Building Washer Dryer Install Allowed Common Area Fireplace

Appliances

Dryer Washer Dryer Allowed Washer

Building Information

Building Data View Compliance & Permits
Total Units 51
Stories 12
Style Prewar

Financial Details

Maintenance $10,804/mo
Original Price $7,495,000
Sale Price $6,699,000

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

339

Median Asking Price

$1.57M

Median $/Sqft

$1,560

Avg Days on Market

N/A

New This Week

25

Price Reduced

28%

Sold (30 Days)

32

Median Sale Price

$1.52M

Live data from RLS at REBNY • Updated 4/27/26, 6:10 AM EST

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Location

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850 PARK Avenue #2B/1C, Upper East Side, New York County

Floor Plans

Floor Plan

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 $10,804 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 7 bedrooms and 4 full bathrooms and 1 half bathroom.

The listed interior living area is 4,600 square feet. Verify dimensions independently during due diligence.

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.

At the current list price of $6,699,000 for 4,600 sq ft, the asking price per square foot is approximately $1,456. 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 [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: RLS10543371
First Listed: 3/6/2019
Closed: 7/2/2019
Contract Date: 3/6/2019

Listing Courtesy of Stribling & Associates - Knight Patterson Meem

Listing Contact: (917) 318-6242

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 10:10 AM UTC

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