Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
815 PARK Avenue #9C
Closed For Sale Co-op

$4,700,000

815 PARK Avenue #9C

Upper East Side, Manhattan

MLS® #RLS10904131

RLS at REBNY

Listing by Sotheby's International Realty, Inc.

3

Bedrooms

3

Baths

N/A

Sq. Ft.

1917

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3
Lot Size 8,330 sq ft
Year Built 1917
Ownership Co-op
Maintenance $6,212/mo
Parking Garage
Neighborhood Upper East Side

Property Highlights

  • Fireplace: Wood-burning or decorative fireplace
  • Style: Prewar architecture
  • Parking: Private garage

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 7
Baths 3 Full
Pets Yes
Year Built 1917
Parking Garage Available
Architectural Style Prewar
Lot Size 8,330 sq ft
Parcel # 1409-0069-00815-000-000009C

Listing History

Event Date Price Change
Listed Feb 21, 2018 $4,995,000 -
Currently May 13, 2026 $4,700,000 -5.9%

Description

Just completed - exceptionally beautiful, turn-key custom renovation! Every square foot of this 9th floor, sun-flooded three bedroom is perfect. Enter to its own sunny elevator landing with an open eastern city view. The living and dining rooms are adjacent and feature coffered ceilings, custom LED lighting, a wood-burning fireplace and extra wide windows. A windowed custom kitchen has integrated top-of-the-line appliances and storage for every conceivable culinary need. The master bedroom is sunny with open views south, and has a separate dressing room with superb custom built-ins and en suite bath with double sinks. A sophisticated buyer will appreciate the many finely considered details. There are two additional bedrooms, each of which has an en suite bath. Additional features include an enormous walk-in closet with full size washer and dryer, Sonos system and space for every storage need. Central air conditioning throughout. Shareholders in this white glove pet friendly cooperative enjoy doorman and concierge, gym, recreation room with billiards, ping pong, air hockey and a wet bar, bike room, laundry, and private storage. Situated on the Park Avenue gold coast, near Central Park and many of the city's best schools, boutiques, restaurants, and transportation. Showings by appointment Monday-Friday, 9AM-5PM. 2% flip tax. 50% financing permitted.

Features & Amenities

Interior Features

Building Washer Dryer Install Allowed Common Area Fireplace

Building Information

Building Data View Compliance & Permits
Total Units 49
Stories 15
Style Prewar

Financial Details

Maintenance $6,212/mo
Original Price $4,995,000
Sale Price $4,700,000

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

341

Median Asking Price

$1.70M

Median $/Sqft

$1,498

Avg Days on Market

N/A

New This Week

26

Price Reduced

28%

Sold (30 Days)

44

Median Sale Price

$1.60M

Live data from RLS at REBNY • Updated 5/13/26, 6:34 PM EST

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Location

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815 PARK Avenue #9C, Upper East Side, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1917
Year Built
109 years old
14
Floors
46
Residential Units
R10
Zoning District
Elevator Apartments Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $11,033,550
Land Value: $2,830,500
Exemptions: $40,580

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

Lot Area: 8,330 SF
Building Area: 101,056 SF
Built FAR: 12.13
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 $6,212 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 3 bedrooms and 3 full bathrooms.

According to MLS records, the building was constructed in 1917, making it approximately 109 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: RLS10904131
First Listed: 2/21/2018
Closed: 5/7/2018
Contract Date: 9/25/2017

Listing Courtesy of Sotheby's International Realty, Inc. - Cathy Taub

Listing Contact: (212) 606-7772

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 10:34 PM UTC

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