#RLS20015072, Sophia Guinchard, Listing office: Serhant

21 W 20th St Unit Ph1 New York City, NY 10011
Property details
About 21 W 20th St Unit Ph1
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.
Highlights
Summary
- Partial Bathrooms: 1
- Full Bathrooms: 4
- Appliances: Dishwasher
- Flooring Type: Hardwood
- Interior: Entrance Foyer, Eat-in Kitchen, Kitchen Window
- Total Bedroom Count: 4
- View: City
- Exterior: Building Garden, Private Outdoor Space Over 60 Sqft
- Architectural Style: Loft
- Cooling: Central Air
- List Price: $11,750,000
- Price/SqFt: $2,427
- HOA Amount: $8937 Monthly
- Year Built: 2016
- Living Area: 4,841 SqFt
- MLS Number: RLS20028200
- MLS Name: RLS
- Office Name: Sothebys International Realty
- Office Phone: (212) 606-7660
- Listing Agent: Mara Flash Blum
- Agent Phone: (212) 431-2447
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Last updated on: 6/20/2025, 1:45:37 PM Eastern. If you have any questions regarding the accuracy of this data, please contact us at help@rockethomes.com.
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$11,750,000
21 W 20th St Unit Ph1
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Price information
Property sales
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Tax history
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Nearby schools
8
Sixth Avenue Elementary School
Public District PK-3
0.2 mi
•64 W 17th St
9
P.S. 41 Greenwich Village School
Public District PK-5
0.5 mi
•116 W 11th St
7
P.S. 11 William T. Harris School
Public District KG-5
0.5 mi
•320 W 21st St
School ratings are a score out of 10, where 10 is the highest and 1 is the lowest.
Neighborhood
The neighbors living near this home have an average income of $136,667. The majority of New York City, NY residents have income $200k+ annually. The most common type of family is single, no kids. Most residents in this area have post secondary degree education.
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Frequently asked questions
About 21 W 20th St Unit Ph1
The listing price of 21 W 20th St Unit Ph1 property is $11,750,000.
The property 21 W 20th St Unit Ph1 is a condo located in New York City, New York, 10011.
Active Listing: 21 W 20th St Unit Ph1 is For Sale (Active/New) which means the seller is accepting offers.
The nearby schools for 21 W 20th St Unit Ph1 are: Sixth Avenue Elementary School (GreatSchools Rating 8/10), P.S. 41 Greenwich Village School (GreatSchools Rating 9/10), P.S. 11 William T. Harris School (GreatSchools Rating 7/10), Ballet Tech/Nyc Public School for Dance (GreatSchools Rating 10/10), Success Academy Charter School-Union Square (GreatSchools Rating 9/10), Nyc Lab Middle School for Collaborative Studies (GreatSchools Rating 9/10), Manhattan Village Academy (GreatSchools Rating 8/10), Clinton School (The) (GreatSchools Rating 8/10), Harvest Collegiate High School (GreatSchools Rating 5/10).
The property at 21 W 20th St Unit Ph1 has 4 bedrooms and 4 full and 1 half bathrooms.
The property 21 W 20th St Unit Ph1 is 4,841 SqFt (source: MLS/tax record).
The year of construction for 21 W 20th St Unit Ph1 is 2016.
This home is located at 21 W 20th St Unit Ph1 in New York City, NY and zip code 10011 in the The Flatiron District neighborhood. This 4,841 square foot home was built in 2016. Features: 4 bedrooms, 5 bathrooms. It has been listed on Rocket Homes since June 3, 2025 and is currently priced at $11,750,000.
Over 207 listings were sold over their listed price in May 2025 in New York City, NY. In the same period over 737 listings were sold below the listed price and 936 listings were sold for the listed price. Between April and May 2025, New York City, NY real estate market has seen increase in the number of listings by 0.3%. In May 2025, listings were on the market for 121 days. During the same period, the median list price in this real estate market was $875,081.