Closed For Sale • Co-op

$1,295,000

$853 per sq ft

4 W 21st Street #10D

Flatiron, Manhattan

MLS® #RLS20014968

Listing by Sothebys International Realty

2

Bedrooms

3.5

Baths

1,518

Sq. Ft.

2006

Year Built

Quick Summary

Bedrooms 2

Bathrooms 3 full, 1 half

Living Area 1,518 sq ft

Lot Size 9,384 sq ft

Year Built 2006

Ownership Co-op

Maintenance $6,523/mo

Parking Garage

Neighborhood Flatiron

Floor 10 of 17

Property Highlights

• Views: City
• Exposure: North,South facing
• Climate Control: Central Air

Property Details

Type Co-op

Ownership Stock Cooperative

Total Rooms 4

Baths 2 Full, 1 Half

Floor 10 of 17

View City

Exposure North,South

Cooling Central Air

Pets Yes

Year Built 2006

Living Area 1,518 sq ft

Parking Garage Available

Structure Type None

Flooring Hardwood

Furnished Unfurnished

Lot Size 9,384 sq ft

Parcel # 0822-0045-00004-000-000010D

Block/Lot 00822/0045

Description

Spacious 2-Bed, 2.5-Bath in Prime Flatiron This 1,518+/- SF 2-bedroom, 2.5-bathroom home at 4 West 21st Street offers modern design, abundant light, and top-tier finishes. A gracious entry foyer leads to a sun-drenched great room with floor-to-ceiling windows, electronic shades, and an open chef’s kitchen with Sub-Zero, Miele, Bosch, and Kohler appliances. Both south-facing bedrooms feature en-suite baths and open views. The primary suite includes a large walk-in closet and spa-like bath with heated floors, double vanity, soaking tub, and glass shower. Additional highlights include in-unit laundry, custom window treatments, and hardwood floors. Full-service condop with doorman, fitness center, garage access, and landscaped garden. Pet- and investor-friendly. Close to Madison Sq & Union Sq Parks, dining, shopping, and transit.

Features & Amenities

Interior Features

Entrance Foyer Common On Floor In Unit Flooring: Hardwood

Exterior Features

Building Garden

Building Amenities

Elevators

Appliances

Dishwasher

Building Information

Total Units 56

Stories 17

Structure None

Financial Details

Maintenance $6,523/mo

Original Price $1,350,000

Sale Price $1,185,000

Previous Price $1,350,000

About Flatiron

View All Flatiron Listings

The Flatiron District is a vibrant 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

122

Median Asking Price

$2.37M

Median $/Sqft

$1,724

Avg Days on Market

N/A

New This Week

7

Price Reduced

30%

Sold (30 Days)

11

Median Sale Price

$2.80M

Live data from RLS at REBNY • Updated 3/23/26, 5:01 AM EST

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Location

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4 W 21st Street #10D, Flatiron, New York County

NYC Zoning • Google Maps • Street View

Floor Plans

Data Sources & Methodology

Listing Data

RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.

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.

All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.

MLS® ID: RLS20014968

First Listed: 4/8/2025

On Market: 4/8/2025

Price Changed: 6/26/2025

Closed: 10/31/2025

Contract Date: 4/8/2025

Listing Courtesy of Sothebys International Realty - Katherine Salyi

Listing Contact: (212) 431-2440

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.

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RLS Data display by Keller Williams NYC. Data last updated on 3/23/2026 at 9:01 AM UTC