521 Park Avenue #10A
MLS® #RLS20052867
Listing by Compass
1
Bedroom
2.5
Baths
1,000
Sq. Ft.
1912
Year Built
Quick Summary
Property Highlights
- Character: Pre-war building (1912)
Property Details
Description
Loft-Like Prewar Condominium on Park Avenue Rarely available, this sun-flooded 1-bedroom, 1.5-bath residence sits on a high floor of one of Park Avenue’s most distinguished prewar condominiums. Spanning approximately 1,000 sqft, the home is defined by its soaring 10’8” ceilings, oversized windows, and open city views that create a bright, airy, and loft-like atmosphere. The gracious layout features a spacious living and dining area with excellent proportions, ideal for both entertaining and everyday living. With its scale and flexibility, the residence can be easily reimagined as a comfortable two-bedroom home, offering exceptional versatility. The private wing includes a generous bedroom suite with excellent closet space, an en suite bath, and an additional powder room. A windowed kitchen adds to the home’s appeal, enhancing both functionality and natural light throughout. 521 Park Avenue is a white-glove prewar condominium offering 24-hour doorman, porter, handyman, live-in resident manager, and fitness center, with laundry and private storage in the basement. Pets, pied-à-terres, and flexible financing are welcome. Ideally located near Central Park, Madison and Fifth Avenue shopping, and world-class dining, this address offers the very best of Manhattan living. Currently the unit does not have a washer/dryer, but it has been approved by the building and easy to install.
Features & Amenities
Interior Features
Building Amenities
Building Information
Financial Details
About Lenox Hill
View All Lenox Hill ListingsLenox Hill offers a sophisticated blend of residential tranquility and cosmopolitan convenience. As one of the most coveted sections of the Upper East Side, the neighborhood is defined by its proximity to Central Park, world-class medical institutions, and the high-end boutiques of Madison Avenue. The housing stock here is diverse, ranging from palatial pre-war cooperatives to sleek, modern condominiums that offer sweeping views of the East River and the city skyline.
Lenox Hill Live Market Data
View NeighborhoodActive Listings
569
Median Asking Price
$1.44M
Median $/Sqft
$1,452
Avg Days on Market
N/A
New This Week
24
Price Reduced
37%
Sold (30 Days)
47
Median Sale Price
$1.63M
Live data from RLS at REBNY • Updated 2/18/26, 4:36 PM EST
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Location
521 Park Avenue #10A, Lenox Hill, New York County
Virtual Tour
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Market Data
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Map & Location
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Listing Courtesy of Compass - Alexandra Hedaya
Listing Contact: (917) 251-7061
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.
RLS Data display by Keller Williams NYC. Data last updated on 2/18/2026 at 9:36 PM UTC