SOLD FOR $3,500,000
· Closed February 4, 2021
40 E 21ST Street #PH
MLS® #RLS10668058
Listing by Halstead dba Brown Harris Stevens Residential Sales LLC
2
Bedrooms
2
Baths
N/A
Sq. Ft.
N/A
Year Built
Quick Summary
Property Highlights
- Exposure: East,North,South,West facing
- Outdoor Space: Rooftop
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 16, 2020 | $3,500,000 | - |
| Currently | May 18, 2026 | $3,500,000 | - |
Description
This gorgeous penthouse loft on the 11th floor of a coveted boutique co-op, with a 12th floor private roof deck perched above, sets the standard of luxury living. A key-locked elevator opens directly into the expansive floor-through residence, which is currently configured as a two-bedroom but can easily accommodate the addition of another bedroom or two if desired. Brightened by large windows on four exposures, interiors are beautifully designed and finely renovated, enriched by exposed brick, solid oak hardwood floors, custom doors, chic color tones, built-in bookcases, and other thoughtful features. Recent enhancements heighten the allure and include newer kitchen appliances, a new master bath and updated roof deck, both done in 2020.
A generous open living and dining space with airy 11' ceilings, a wall of northern windows, plus windows facing east and west is perfect for entertaining (even piano soirees!), blending warmth with a chic industrial, contemporary feel. Or take the party to the spacious rooftop where you can enjoy lounging, cocktail parties, al fresco dining, and amazing vistas of the city including direct views of the Empire State and Met Life Buildings. The gourmet in you will be inspired in the stunning, modern windowed chef's kitchen appointed with top-of-the-line appliances (Viking stove, Sub-Zero refrigerator and Bosch dishwasher). Down the hall await the quiet sleeping quarters, including the master bedroom suite nestled on the south side with corner exposures, a huge walk-in closet, and impeccably-finished en-suite bath. Nearby is a guest bedroom, home office, second lovely windowed bathroom, and laundry/storage room. There's also central air. And if you love the furnishings, the seller would consider including it all!
40 East 21st Street is an intimate prewar cooperative with private storage that comes with each unit. The location is outstanding, moments to Madison Square Park and some of the city's best shops and restaurants. Also nearby is Whole Foods, Trader Joe's, and the famous weekly farmer's market at Union Square, as well as the 6, N & R subway station under a block away.
Features & Amenities
Interior Features
Exterior Features
Appliances
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
139
Median Asking Price
$2.42M
Median $/Sqft
$1,788
Avg Days on Market
N/A
New This Week
12
Price Reduced
32%
Sold (30 Days)
4
Median Sale Price
$1.55M
Live data from RLS at REBNY • Updated 5/18/26, 7:28 PM EST
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40 E 21ST Street #PH, Flatiron, New York County
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 monthly maintenance are $2,296 per month. Confirm the exact amount with the listing broker before making an offer.
This property has 2 bedrooms and 2 full bathrooms.
This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.
Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.
To schedule a private showing, contact Milton Coste at (917) 416-7433 or mcoste@kwnyc.com. 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 Halstead dba Brown Harris Stevens Residential Sales LLC - Christopher Kromer
Listing Contact: (212) 381-2334
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 5/18/2026 at 11:28 PM UTC