Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $9,350,000

Listed at $10,950,000 · Sold 14.6% below asking · Closed January 10, 2018

21 W 20th Street #PH1
Closed For Sale Condo

$10,950,000

$2,262 per sq ft

21 W 20th Street #PH1

Flatiron, Manhattan

21W20

MLS® #RLS10070367

RLS at REBNY

Listing by Elliman

4

Bedrooms

5

Baths

4,841

Sq. Ft.

2016

Year Built

Quick Summary

Bedrooms 4
Bathrooms 5
Living Area 4,841 sq ft
Year Built 2016
Ownership Condo
HOA/Common Charges $9,076/mo
Property Taxes $28,680/yr
Neighborhood Flatiron
Floor 15 of 15

Property Highlights

  • Outdoor Space: Terrace
  • New Construction: Brand new building

Property Details

Type Condo
Ownership Condominium
Total Rooms 6
Baths null Full
Floor 15 of 15
Pets Yes
Cross Street 5TH AVE
Year Built 2016 (New)
Living Area 4,841 sq ft

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

Building Washer Dryer Install Allowed Common Area

Exterior Features

Terrace

Building Information

Financial Details

Common Charges $9,076/mo
RE Taxes $28,680/yr ($2,390/mo)
Original Price $11,950,000
Sale Price $9,350,000
Previous Price $11,950,000

The 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 Neighborhood

Active 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

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21 W 20th Street #PH1, Flatiron, New York County • Near 5TH AVE

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1927
Year Built
99 years old
16
Floors
14
Residential Units
C6-4A
Zoning District
Condominiums Historic District: Ladies' Mile Historic District

Tax & Assessment

Assessed Value: $18,056,697
Land Value: $1,655,999
Exemptions: $0

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 9,200 SF
Building Area: 80,907 SF
Built FAR: 8.79
Allowed FAR: 10

Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)

Want help estimating ownership costs or understanding building compliance? Let's discuss

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) 416-7433
MLS® ID: RLS10070367
First Listed: 5/24/2017
Price Changed: 11/7/2017
Closed: 1/10/2018
Contract Date: 5/23/2017

Listing 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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 6/10/2026 at 3:56 AM UTC

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