SOLD FOR $5,800,000
· Closed November 12, 2019
850 PARK Avenue #3B
MLS® #RLS10569360
Listing by Sotheby's International Realty, Inc.
3
Bedrooms
5
Baths
3,025
Sq. Ft.
1913
Year Built
Quick Summary
Property Highlights
- Fireplace: Wood-burning or decorative fireplace
- Style: Prewar architecture
- Character: Pre-war building (1913)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Jun 19, 2019 | $6,350,000 | - |
| Currently | Apr 26, 2026 | $5,800,000 | -8.7% |
Description
Unclassic beautiful 9 Room Prewar Park Avenue co-op with all outside rooms. With approximately 3,000+ square feet and ten foot ceilings, this apartment also has one of the best original floorplans on Park Avenue. This Classic 8 Room with adjacent outside maids room and bath, benefits from all exterior rooms facing East over Park Avenue and North onto trees and townhouses. Semi-private landing leads to a large octagonal shaped foyer which opens to the enormous Living Room with wood burning fireplace. It is flanked by a corner Library (3rd Bedroom) and Dining Room creating an enfilade of open space. The chef's eat in kitchen with timeless butler's pantry allows for gracious entertaining. Beyond lies a vented laundry room and additional bedroom with ensuite bath. A beautiful and classic renovation that includes C/A/C and sound throughout. The apartment benefits from its oversized windows looking into the tree line of Park Avenue and East 77th Street. 850 Park is a fully staffed sought after building with a new fitness center and outdoor half basketball court. This ideal location is between the Carlyle Hotel and 6 subway line and only two blocks to Central Park and its charming Boat Basin. There is a 2.5% flip tax payable by the Buyer and the apartment transfers with outside storage. The building permits 30% financing and is pet friendly. www.850Park.com
Features & Amenities
Interior Features
Appliances
Building Information
Financial Details
About Upper East Side
View All Upper East Side ListingsThe 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 NeighborhoodActive Listings
339
Median Asking Price
$1.57M
Median $/Sqft
$1,563
Avg Days on Market
N/A
New This Week
27
Price Reduced
27%
Sold (30 Days)
32
Median Sale Price
$1.52M
Live data from RLS at REBNY • Updated 4/26/26, 5:55 AM EST
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Location
850 PARK Avenue #3B, Upper East Side, New York County
Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)
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Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Frequently Asked Questions
Common questions about this property
The current listed monthly maintenance are $7,514 per month. Confirm the exact amount with the listing broker before making an offer.
This property has 3 bedrooms and 5 full bathrooms.
The listed interior living area is 3,025 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 $5,800,000 for 3,025 sq ft, the asking price per square foot is approximately $1,917. 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) 416-7433Listing Courtesy of Sotheby's International Realty, Inc. - Randall Gianopulos
Listing Contact: (212) 606-7622
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 Data display by Keller Williams NYC. Data last updated on 4/26/2026 at 9:55 AM UTC