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21 West 20th Street PH1 Flatiron District New York NY 10011
  1. Home
  2. 21 West 20th Street, PH1
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
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21 West 20th Street, PH1

Flatiron District | NY
Fifth Avenue & Avenue of the Americas

Schedule a Viewing
New This Week
$ 11,750,000
Active
Status
10
Rooms
4
Bedrooms
4.5
Bathrooms
$ 9,733
Real Estate Taxes [Monthly]
$ 8,937
Common Charges [Monthly]
80%
Financing Allowed
  • 21 West 20th Street, PH1
  • 10 Rooms
  • 4 Beds
  • 4.5 Baths
  • $ 11,750,000

Photos

21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011

Floor Plan

21 West 20th Street PH1 Flatiron District New York NY 10011
21 West 20th Street PH1 Flatiron District New York NY 10011

Description

An Idyllic, peaceful penthouse designed with the colors of the ocean is a perfect retreat from city life. Shades of blue, sand and white evoke an immediate sense of calm as the elevator door opens into a private oasis. Perfectly curated, this palatial 4-bedroom, 4.5 bath penthouse boasts over 5,300 SF of indoor and outdoor living with a great room that delivers grand and gracious entertaining. With full-service doorman services plus accessed via a private keyed elevator, the residence offers the ultimate in discretion and exclusivity, combining expansive scale with refined architectural detailing. Host a summer soiree and enjoy a brand-new Weber gas BBQ on your south-facing terrace. Whether inside or out, experience grand scale dining that can accommodate large gatherings. The elegantly appointed double living room has both fireplace seating and a comfortable lounging area. An artist paradise, high ceilings with gallery-sized walls and niches is perfect for a curated art and sculpture collection. Interior living expands to exterior living with folding terrace doors allowing the south-facing garden paradise of your favorite plantings to be enjoy in all seasons. The eat-in chef’s kitchen has counter-top dining for four and dining table for four. Beautiful stone and oak wood cabinetry in sandy tones in the kitchen are simply magnificent. The chef’s kitchen is a study in elevated utility and minimalist elegance, outfitted with Miele, Julien, and Grohe appliances, custom white oak cabinetry, a 10.5-foot marble island, and a concealed butler’s pantry. Adjacent, a flexible entertainment/media room or library can be enclosed for privacy with glass ribbed and steel pocket doors or opened for expansive hosting. The primary suite occupies its own private wing, with sitting areas, dual custom wardrobes, a midnight kitchenette, and direct access to its southern terrace. The spa-quality, five-fixture bath includes a freestanding LaCava tub, radiant heated floors, and a walk-in rain shower — relax in an at-home sumptuous sanctuary. Three additional ensuite bedrooms provide private refuges, each with generous walk-in closets. There is voluminous closet space as well as two private storage room included with the sale. The flexible floorplan allows the many rooms to be customized and designed for your personal lifestyle. Home offices, libraries or winged children’s bedrooms. Designed with state-of-the-art home technology in mind, the residence is fully integrated with Savant Home Automation, electronic window treatments, a Sonos sound system, and a sophisticated lighting and climate control infrastructure. Perched atop one of Flatiron’s most distinguished boutique buildings, The Penthouse at 21W20 is a full-floor masterpiece. With two private terraces totaling over 540 sq. ft., bespoke finishes, and light-filled entertaining spaces, this penthouse stands as one of the most unique and undervalued opportunities currently available. The Building: 21W20, designed by celebrated architect David Mann (MR Architecture + Decor), is a discreet luxury condominium with white-glove service, including a 24-hour doorman, private lounge, curated garden, refrigerated storage, and pet spa. This offering includes two deeded private storage rooms. The Neighborhood: Located in historic, landmarked Flatiron District at the crossroads of Madison Square Park and the incomparable Union Square Farmer’s Market, live in one of Manhattan’s most sought-after enclaves. Michelin star restaurants, Fifth Avenue shopping, ABC Carpet & Home, Whole Foods, Trader Joes, Eataly – live the best of both worlds – a palatial, paradise retreat amid one of the most exciting cities in the world. Special assessment: $528.06/month from April 2025 to April 2027.
An Idyllic, peaceful penthouse designed with the colors of the ocean is a perfect retreat from city life. Shades of blue, sand and white evoke an immediate sense of calm as the elevator door opens into a private oasis. Perfectly curated, this palatial 4-bedroom, 4.5 bath penthouse boasts over 5,300 SF of indoor and outdoor living with a great room that delivers grand and gracious entertaining. With full-service doorman services plus accessed via a private keyed elevator, the residence offers the ultimate in discretion and exclusivity, combining expansive scale with refined architectural detailing. Host a summer soiree and enjoy a brand-new Weber gas BBQ on your south-facing terrace. Whether inside or out, experience grand scale dining that can accommodate large gatherings. The elegantly appointed double living room has both fireplace seating and a comfortable lounging area. An artist paradise, high ceilings with gallery-sized walls and niches is perfect for a curated art and sculpture collection. Interior living expands to exterior living with folding terrace doors allowing the south-facing garden paradise of your favorite plantings to be enjoy in all seasons. The eat-in chef’s kitchen has counter-top dining for four and dining table for four. Beautiful stone and oak wood cabinetry in sandy tones in the kitchen are simply magnificent. The chef’s kitchen is a study in elevated utility and minimalist elegance, outfitted with Miele, Julien, and Grohe appliances, custom white oak cabinetry, a 10.5-foot marble island, and a concealed butler’s pantry. Adjacent, a flexible entertainment/media room or library can be enclosed for privacy with glass ribbed and steel pocket doors or opened for expansive hosting. The primary suite occupies its own private wing, with sitting areas, dual custom wardrobes, a midnight kitchenette, and direct access to its southern terrace. The spa-quality, five-fixture bath includes a freestanding LaCava tub, radiant heated floors, and a walk-in rain shower — relax in an at-home sumptuous sanctuary. Three additional ensuite bedrooms provide private refuges, each with generous walk-in closets. There is voluminous closet space as well as two private storage room included with the sale. The flexible floorplan allows the many rooms to be customized and designed for your personal lifestyle. Home offices, libraries or winged children’s bedrooms. Designed with state-of-the-art home technology in mind, the residence is fully integrated with Savant Home Automation, electronic window treatments, a Sonos sound system, and a sophisticated lighting and climate control infrastructure. Perched atop one of Flatiron’s most distinguished boutique buildings, The Penthouse at 21W20 is a full-floor masterpiece. With two private terraces totaling over 540 sq. ft., bespoke finishes, and light-filled entertaining spaces, this penthouse stands as one of the most unique and undervalued opportunities currently available. The Building: 21W20, designed by celebrated architect David Mann (MR Architecture + Decor), is a discreet luxury condominium with white-glove service, including a 24-hour doorman, private lounge, curated garden, refrigerated storage, and pet spa. This offering includes two deeded private storage rooms. The Neighborhood: Located in historic, landmarked Flatiron District at the crossroads of Madison Square Park and the incomparable Union Square Farmer’s Market, live in one of Manhattan’s most sought-after enclaves. Michelin star restaurants, Fifth Avenue shopping, ABC Carpet & Home, Whole Foods, Trader Joes, Eataly – live the best of both worlds – a palatial, paradise retreat amid one of the most exciting cities in the world. Special assessment: $528.06/month from April 2025 to April 2027.

Listing Courtesy of Sotheby's International Realty, Inc.

Features

A/C [Central]
Terrace
Washer / Dryer
21 West 20th Street PH1 Flatiron District New York NY 10011

Building Details

21 West 20th Street PH1 Flatiron District New York NY 10011
Condo
Ownership
Mid-Rise
Building Type
Full-Time Doorman
Service Level
Keyed Elevator
Access
Pets Allowed
Pet Policy
822/7506
Block/Lot
Post-War
Age
2014
Year Built
15/14
Floors/Apts

Building Amenities

Bike Room
Laundry Room
Private Storage
Wine Cellar

Building Statistics

$ 1,802 APPSF

Closed Sales Data [Last 12 Months]

21 West 20th Street PH1 Flatiron District New York NY 10011

Contact

License Licensed As: Charles Mazalatis
Charles Mazalatis

Charles Mazalatis

License Licensed As: Charles Mazalatis

President & Licensed Real Estate Broker

W: 646-807-4946
M: 917-359-8934
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This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2025 REBNY Listing Service, Inc. All rights reserved. All information is intended only for the Registrant’s personal, non-commercial use. RLS Data display by Maz Group NY. Additional building data provided by On-Line Residential [OLR].
All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer.
Listing ID: 1278883