- Overview
- Description
- Property Details
- Location
- HOA Management
- Facts & Features
- Getting Around
$2,900,000
Monthly Est:$14,434
4 Beds
- 3 Baths
3 full baths
3,000sqft
4 W 21st Street #3-AD, New York, NY 10010
$2,900,000
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Apartment
Built in 2006
$11,545/mo HOA
-- sqft lot
$967/sq.ft
Description
Welcome to Residence 3AD at 4 West 21st Street. A rare, full-floor–scale Flatiron District home offering privacy, flexibility, and long-term versatility. Spanning approximately 3,000 square feet, this thoughtfully combined residence delivers the scale and comfort of a private home with the freedom of condop ownership. With 10-foot ceilings, two separate entryways, and a layout designed to evolve over time, Residence 3AD is equally well-suited for families, co-purchasers, or long-term investors seeking adaptability. A gracious foyer opens to expansive, north-facing living and dining spaces that anchor the home, ideal for daily living, entertaining, or shared use without compromise. The kitchen is connected via a passthrough, maintaining separation while allowing ease of flow, and is complemented by a dedicated dining room and breakfast nook that support everything from weekday mornings to formal gatherings. The south-facing bedroom wing offers four generously proportioned bedrooms, providing exceptional quiet and privacy rarely found in this part of Manhattan. The primary suite functions as a true retreat, complete with a walk-in closet, en-suite bath, and an adjacent office or library, perfect for work-from-home flexibility or future reconfiguration. Designed by acclaimed architect Hugh Hardy, 4 West 21st Street is a boutique, full-service condop that offers the advantages of condo ownership. The building allows pets, unlimited subletting, pied-a`-terres, co-purchasing, gifting, and parents buying for children, making it an ideal choice for multigenerational living, friends buying together through an LLC, or investors seeking maximum flexibility. Amenities include a 24-hour doorman, landscaped common terrace, fitness center, and on-site parking. Located just steps from Madison Square Park, and surrounded by the best of Flatiron, NoMad, and Union Square, residents enjoy immediate access to top dining, culture, and green space, including Eataly, ABC Kitchen, Trader Joe's and more! Private showings available by appointment with The 212Bravo Team at Nest Seekers.
- Houzeo last checked: 1 hour ago
- Listing updated: April 19, 2026 at 7:10 pm
- Listing Provided by: Isabella Bravo (917) 828-4992 , Carolina Bravo (917) 696-4801 | Nest Seekers LLC (212) 252-8772
- Source: Rebny MLS-NY | MLS#: RLS20070160

This condo is in:
Property Details
Status
Active
Type
Condominium
No. of Stories
17
County
City
Neighborhood
Year Built
2006
HOA Fees
$11545/mo
Finished Area
3,000 sqft
Lot Size
-- sqft lot
Basement Area
- sqft
MLS Name
Rebny MLS
MLS Number
RLS20070160
Days on Market
273

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Location
HOA Management
N/A
HOA Fees
$11,545/ Monthly
Disclaimer: Amenities are based on third-party information and may vary; buyers must independently verify all amenities, as information is deemed reliable but not guaranteed.
Facts & Features
Rooms
Bedrooms & bathrooms
Bedrooms: 4
Bathrooms: 3
Interior
Exterior Features
Building Storage, Building Courtyard, Building Roof Deck
Interior Features
Dining Area
Cooling
Central Air
Construction
Year Built
Year Built: 2006
Home type
Apartment
Architectural Style
Loft
Utilities & Energy
Laundry Features
Building Washer Dryer Install Allowed, Common Area
Other Features
Subdivision Name
Flatiron
Price History
| Date | Event | Price |
|---|---|---|
02/03/2026 Source: | Price Increased | $3,350,000 +15.52% $1,117/sqft |
02/03/2026 Source: | Listed for Sale | $2,900,000 $967/sqft |
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The real estate listing data marked with this icon comes from the IDX program of the RLS at REBNY Listing Service (RLS). Listing information for certain New York City properties provided courtesy of the Real Estate Board of New York's Residential Listing Service (the "RLS") through Nov 04, 2026, 11:45AM. Information deemed reliable but not guaranteed. Information is provided exclusively for consumers' personal, non-commercial use, and may not be used for any purpose other than the identification of potential properties for purchase. 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. Buyer to verify all information. © 2026 The Real Estate Board of New York, Inc. All rights reserved.
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