21 W 20th Street Unit PH1, New York, NY 10011

$11,750,000

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… Read More SF of indoor and outdoor living with a great room that delivers grand and gracious entertaining. With full-service doorman services and private keyed elevator access, the residence offers the ultimate in discretion and exclusivity, combining expansive scale with refined architectural detailing. BBQ year round on your south facing terrace with Weber gas grill. 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, gallery-sized walls and niches are perfect for a curated art collection. Interior living expands to exterior living with folding terrace doors allowing for a sun-splashed perennial garden to enjoy all year long. 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, reside in one of Manhattan’s most sought-after enclaves. Michelin star restaurants, Fifth Avenue shopping, ABC Carpet & Home, Whole Foods, Trader Joes, Eataly – live large amid one of the most exciting cities in the world. Special assessment: $528.06/month from April 2025 to April 2027. Read Less

Listing Courtesy of: Mara Flash Blum, Sothebys International Realty

Listing Snapshot

Days Online

Last Updated

Aug 4, 2025

Property Type

Loft

Beds

Full Baths

Partial Baths

Square Ft.

80,907

Lot Size

0.21 Acres

Year Built

2016

MLS Number

RLS20028200

30 Days Snapshot Of 10011

$3.05M

+6%

(avg) sold price

+11%

homes sold

104

-11%

(avg) days on market

Snapshot

Area Map

Additional Details

Building

Entry Level: 10, Features: Elevators, Living Area Units: SquareFeet, Rooms Total: 10, Structure Type: None

Exterior Features

Patio And Porch Features: BuildingTerrace, Terrace

Interior Features

Interior Features: EntranceFoyer, EatInKitchen, KitchenWindow

Property

Property Sub Type: Loft, View YN: t, View: City

Taxes

Tax Annual Amount: $116,268, Tax Block: 00822, Tax Lot: 7506

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21 W 20th Street Unit PH1

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