Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $6,000,000

· Closed May 21, 2018

850 PARK Avenue #6B
Closed For Sale Co-op

$6,000,000

$1,846 per sq ft

850 PARK Avenue #6B

Upper East Side, Manhattan

MLS® #RLS10482805

RLS at REBNY

Listing by Stribling & Associates

2

Bedrooms

0.5

Baths

3,250

Sq. Ft.

1924

Year Built

Quick Summary

Bedrooms 2
Bathrooms 4 full, 1 half
Living Area 3,250 sq ft
Lot Size 15,835 sq ft
Year Built 1924
Ownership Co-op
Maintenance $7,249/mo
Neighborhood Upper East Side
Floor 6 of 12

Property Highlights

  • Fireplace: Wood-burning or decorative fireplace
  • Style: Prewar architecture
  • Character: Pre-war building (1924)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 7
Baths null Full, 1 Half
Floor 6 of 12
Pets Yes
Year Built 1924
Living Area 3,250 sq ft
Architectural Style Prewar
Lot Size 15,835 sq ft
Parcel # 1391-0040-00850-000-000006B

Listing History

Event Date Price Change
Listed May 21, 2018 $6,250,000 -
Currently May 13, 2026 $6,000,000 -4.0%

Description

IN CONTRACT - Grandly-scaled but welcoming rooms make this beautiful, completely renovated home exceptional. 3,000 plus square feet, Apartment 6B flows seamlessly, offering separate entertaining and private spaces. A large hexagonal gallery opens into an almost 25-foot square living room with a fireplace. The living room, formal dining room and a handsome corner library are enfilade. A powder room is accessible from the gallery. 6B has approximately 10 foot ceilings, unusually large windows, and herringbone floors throughout. Two ample bedrooms, each have their own bath and well-appointed closets. A large eat-in cook's kitchen encourages gatherings and includes a banquette that can seat up to six for an informal meal. A light filled and finished office, facing north on 77th street, provides workspace for two. Additionally, an attractive maid's room with a fully renovated bathroom is located just outside the apartment off the back landing. 850 Park Avenue is a distinguished, white-glove pre-war cooperative located between 76th and 77th Streets. Built in 1914, the twelve-story building was designed by Rouse & Goldstone. The cooperative is pet-friendly and has a gym. The architects are responsible for other notable cooperatives such as 1107 Fifth Avenue. There is a flip tax of 2.5% to be paid by the purchaser. Apt. 6B: -Venetian plaster walls & other high-end finishes -Storage bin transfers with unit (approx. 5x7x9) -3,000 plus square feet -Wood burning fireplace -Renovated maids room with bath, trades with the unit (external) -RE taxes comprise 53% of the maintenance for apt 6B (2016) Building: -42 residential units in the cooperative -12 stories -Time Warner Cable or Fios -24/7 Doorman with fifteen in staff -No summer work rules -Pet friendly -Renovated gym -Laundry room -Flip Tax 2.5%, to be paid by the purchaser -Showings M-F -30% financing

Features & Amenities

Interior Features

Common Area Fireplace

Building Information

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

Financial Details

Maintenance $7,249/mo
Original Price $6,250,000
Sale Price $6,000,000

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

340

Median Asking Price

$1.70M

Median $/Sqft

$1,500

Avg Days on Market

N/A

New This Week

25

Price Reduced

28%

Sold (30 Days)

43

Median Sale Price

$1.60M

Live data from RLS at REBNY • Updated 5/13/26, 4:31 PM EST

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Location

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850 PARK Avenue #6B, 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 $7,249 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 2 bedrooms and 4 full bathrooms and 1 half bathroom.

The listed interior living area is 3,250 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1924, making it approximately 102 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 $6,000,000 for 3,250 sq ft, the asking price per square foot is approximately $1,846. 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: RLS10482805
First Listed: 5/21/2018
Closed: 5/21/2018
Contract Date: 2/8/2017

Listing Courtesy of Stribling & Associates - Cornelia Zagat Eland

Listing Contact: (917) 734-0229

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 5/13/2026 at 8:31 PM UTC

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