Sold on 8/19/2021 for $7,450,000
521 Park Avenue #PH-11C/12C
MLS® #RLS10853103
Listing by LaSeven Inc
3
Bedrooms
6.5
Baths
3,040
Sq. Ft.
1911
Year Built
Quick Summary
Property Highlights
- Outdoor Space: Balcony
- Style: Prewar,Loft architecture
- Climate Control: Window Units
Property Details
Description
Truly an ARCHITECTURAL GEM, this SPECTACULAR PH DUPLEX offers the rare opportunity to purchase a magnificent apartment in one of Park Avenue's most sought-after prewar CONDO buildings.
Enter PH-11C/12C at 521 Park Avenue and experience the intimate elegance of this HIGH FLOOR CORNER Residence where traditional luxury meets European Sophistication.
Perched above 60th Street and Park Avenue this SUN-FLOODED Duplex with 11FT CEILINGS and over-sized windows, features S/W/E/N EXPOSURES with open views on 60TH STREET, PARK AVENUE AND EAST SIDE SKYLINE.
Beautifully renovated and impeccably designed with the most REFINED ARCHITECTURAL DETAILS s this unique home is the perfect place to entertain or just relax. It spans nine rooms elegantly divided between the two floors, each with its own private entrance.
Upon entering the apartment on the 11th floor a gracious entry foyer with a charming powder room, showcases a sweeping grand staircase leading to the 12th floor private landing dedicated to comfort and privacy.
The entry gallery leads you through IMPRESSIVE ARCHES OPENINGS into spacious and light-filled south facing living room with french windows, a cast-iron Juliet balcony and an antique marble fireplace. Directly adjoined the corner broad library, with handsome custom cabinets/bookshelves and an antique fireplace, offers southern and Park Avenue views with a glimpse of Central Park The living room opens up to a well proportioned south facing ceremonious dining room, which leads to a large and airy corner windowed chef's eat-in kitchen with top of the line stainless still appliances and custom cabinetry. The adjacent windowed guest bedroom/maid quarter's room and private bathroom could be easily converted either to a den, private office or a laundry room. The Dining, Living and Library rooms can be closed up with elegant wooden pocket doors for privacy.
The Upper floor welcomes three generous sun-filled south facing bedrooms with four en-suite marble bathrooms, two antiques fireplaces and a mechanical room.
The private and spacious master bedroom with 11.25 ft ceilings and a beautiful marble fireplace, features two spa like en-suite windowed mosaic marble bathrooms with radiant heated floors, a Jacuzzi, a steam bath, a separate stall shower, two large walk in custom closets/dressing areas and additional storage areas. The lovely and well proportioned adjacent bedrooms have both an en-suite marble bathroom and a private closet. One of them is a corner overlooking Park Avenue.
With custom designed details mosaic and wooden herring borne floors, chair/base and ceilings moldings, stucco wall finishes, antique fireplaces e.g as well as central air and sound system with in-ceiling speakers, radiant heated bathrooms, e.g this apartment is a mix of tradition and convenience.
Designed by William Boring, 521 Park Avenue is a classic prewar white glove doorman building in a premier Upper East Side location. Completed in 1911 and converted to a condominium in 1987, this stately and intimate 12 story and 27 residence building sits in one of the most prestigious addresses near Central Park, the finest dining and shopping of Madison and Fifth Avenue, close to Midtown and at the heart of convenient subway and bus transportation to anywhere in the city.
The condominium amenities include a 24 hr doorman, elevator, gym and is pet friendly.
Virtual tour:
https://my.matterport.com/show/?m=DzxfWvvFwxk&mls=1
Features & Amenities
Interior Features
Exterior Features
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 quiet, 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
287
Median Asking Price
$1.71M
Median $/Sqft
$1,533
Avg Days on Market
N/A
New This Week
20
Price Reduced
27%
Sold (30 Days)
33
Median Sale Price
$1.42M
Live data from RLS at REBNY • Updated 3/11/26, 10:18 AM EST
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Location
521 Park Avenue #PH-11C/12C, Upper East Side, New York County • Near East 60th and 61st Street
Virtual Tour
Floor Plans
Listing Data
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Market Data
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Map & Location
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Listing Courtesy of LaSeven Inc - Gabriella Garzoni
Listing Contact: (212) 582-7777
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.
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RLS Data display by Keller Williams NYC. Data last updated on 3/11/2026 at 2:18 PM UTC