SOLD FOR $9,350,000
Listed at $10,950,000 · Sold 14.6% below asking · Closed January 10, 2018
21 W 20th Street #PH1
MLS® #RLS10070367
Listing by Elliman
4
Bedrooms
5
Baths
4,841
Sq. Ft.
2016
Year Built
Quick Summary
Property Highlights
- Outdoor Space: Terrace
- New Construction: Brand new building
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | May 24, 2017 | $11,950,000 | - |
| Currently | Jun 10, 2026 | $10,950,000 | -8.4% |
Description
This magnificent full-floor penthouse has been meticulously designed and constructed to create a chic, sexy and dramatic home. An electronic-keyed elevator will bring you directly into this 4,841 square foot exclusive and private sanctuary with two stunning south-facing irrigated terraces. Designed by celebrated interior architect David Mann of MR Architecture + Decor, David has conceived a serene atmosphere suitable for living and entertaining, including incorporating folding glass doors along the terraces that seamlessly disappear to enjoy the rare experience of indoor/outdoor living. This dramatic way of life provides a luxurious lifestyle seldom experienced in New York City. The only WELL and LEED certified multi-family residential building in the world, making 21W20 a unique opportunity to live in an organic masterpiece in one the most sought after areas in NYC, the Flatiron District.This vast four bedroom, four and a half bath home allows for a grand lifestyle with oversized living spaces and tremendous light captured through 100 feet of floor-to-ceiling south-facing windows. A grand living/dining room transitions graciously from the spacious foyer into two separate seating areas accompanied by a beautiful bio-fuel fireplace, solid riff white oak hardwood floors, and opens onto the dramatic living room terrace which is fantastic for entertaining or simply enjoying your morning coffee.The humongous living/dining areas flow naturally to an open professional chef's kitchen, consisting of top-of-the-line appliances, air purification system and fixtures from Miele, Julien, and Grohe. Along with elegant custom solid white oak cabinetry, a stainless steel countertop and backsplash, and a custom 10.5 ft. long olive maroon marble kitchen island. Discreetly concealed adjacent to the kitchen is a butler's pantry; with additional storage, appliances and separate sink perfect for larger scale entertaining.The tranquil master suite is located in the west wing of the apartment, and is a stunning 1,100 square feet with a private south-facing terrace, a wet-bar and kitchenette creating an oasis and escape from the rest of the home. The spa 5-fixture master bath is a respite is like no other, with a freestanding LaCava bathtub as its centerpiece. Driftwood Marble and Novelda Cream Limestone surrounds separate wet and dry areas of the room. A walk-in shower and radiant heated floors complete this experience. In addition, there are dual walk-in closets that provide an abundance of dressing and storage space.This home also has three additional sizable bedroom suites, each with its own exclusive en-suite bath and walk-in closet. There is also a powder room and laundry room complete with sink and full-size washer and dryer and large connecting linen closet. Every detail of this home has been thoughtfully conceived from the gracious layout and private outdoor spaces to the finer details including solid wood doors with polished black nickel hardware that are tastefully placed throughout this magnificent residence. In addition, the penthouse can be controlled and monitored from your smart phone by a Savant Home Automation platform.21W20 is a boutique collection of homes with a 24-hour doorman; private lobby lounge with kitchenette; spacious outdoor garden offering relaxation and seating areas; refrigerated storage for grocery deliveries; private storage available for purchase which can be converted to climate controlled wine storage; secure elevator accessed bicycle storage; large capacity washer and dryer; and pet wash room. 21W20 is the latest offering from Gale International, a world-renowned developer with an extensive history of best in-class offerings. Maintaining Gale International's commitment to sustainable development, 21W20 has been awarded USGBC LEED certification, and 421-a Tax Abatement.. The complete offering terms are in an offering plan available from sponsor. File No. CD13-0023. Now with immediate occupancy, only one p
Features & Amenities
Interior Features
Exterior Features
Building Information
Financial Details
About Flatiron
View All Flatiron ListingsThe Flatiron District is a busy intersection of history, technology, and luxury living. Named after the iconic Flatiron Building, the neighborhood is centered around Madison Square Park and is a hub for the city's 'Silicon Alley.' The real estate market is famous for its grand cast-iron loft buildings with high ceilings and expansive floor plans, alongside ultra-luxury glass towers that offer modern amenities and central Manhattan convenience.
Flatiron Live Market Data
View NeighborhoodActive Listings
136
Median Asking Price
$2.20M
Median $/Sqft
$1,778
Avg Days on Market
N/A
New This Week
6
Price Reduced
38%
Sold (30 Days)
14
Median Sale Price
$2.25M
Live data from RLS at REBNY • Updated 6/9/26, 11:56 PM EST
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Location
21 W 20th Street #PH1, Flatiron, New York County • Near 5TH AVE
Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)
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Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
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Frequently Asked Questions
Common questions about this property
The current listed common charges are $9,076 per month. Confirm the exact amount with the listing broker before making an offer.
The current listed annual property tax is $28,680, or roughly $2,390 per month. Verify the current assessment with your attorney before closing.
This property has 4 bedrooms and 5 full bathrooms.
The listed interior living area is 4,841 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 2016, making it approximately 10 years old.
This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.
Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.
At the current list price of $10,950,000 for 4,841 sq ft, the asking price per square foot is approximately $2,262. This figure is for reference only and may differ from appraised or assessed values.
To schedule a private showing, contact Milton Coste at (917) 416-7433 or [email protected]. Per REBNY guidelines effective 2025, a Buyer Representation Agreement is required before a buyer's broker can show you properties. You may attend open houses independently without one.
Have a question not answered here?
(917) 416-7433Listing Courtesy of Elliman - Holly Parker
Listing Contact: (917) 587-7288
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.
Buyer Notice: Planning to work with a buyer's broker? A Buyer Representation Agreement is required before your broker can show you properties, per REBNY/UCBA guidelines (effective 2025). You may attend open houses independently without one.
RLS Data display by Keller Williams NYC. Data last updated on 6/10/2026 at 3:56 AM UTC