Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $1,650,000

· Closed November 6, 2019

4 W 21st Street #11-D
Closed For Sale Condop

$1,650,000

4 W 21st Street #11-D

Flatiron, Manhattan

MLS® #RLS10337405

RLS at REBNY

Listing by Compass

2

Bedrooms

2.5

Baths

N/A

Sq. Ft.

2006

Year Built

Quick Summary

Bedrooms 2
Bathrooms 3 full, 1 half
Year Built 2006
Ownership Condop
HOA/Common Charges $5,676/mo
Parking Garage
Neighborhood Flatiron
Floor 11 of 17

Property Highlights

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

Property Details

Type Condop
Ownership Condop
Total Rooms 4
Baths 2 Full, 1 Half
Floor 11 of 17
View City
Exposure North,South
Cooling Central Air
Pets Yes
Cross Street Fifth Avenue/Avenue of the Americas
Year Built 2006
Parking Garage Available
Block/Lot 822/45

Listing History

Event Date Price Change
Listed Oct 16, 2015 $1,650,000 -
Price Reduced Feb 17, 2016 $2,495,000 +51.2%

Description

In the heart of Flatiron, this modern 2 bedroom, 2.5 bathroom combines elegance and space at an amazing value in a central downtown location. Available immediately, this sophisticated light-filled residence showcases stunning contemporary design throughout. The open kitchen has a high-end appliance package, grey granite countertops, Poliform Varenna cabinetry with ample storage and a large pantry completes this truly special kitchen. The hallway leading to the bedrooms includes a laundry closet with a vented washer/dryer and a powder room with top of the line fixtures for guests. Both bedrooms are bright and serene with large, south-facing windows, and 9.5? ceilings. The master bedroom features a large custom walk-in closet for your storage needs as well as a luxurious en suite 5-fixture bathroom.


Designed by renowned American architect Hugh Hardy, 4W21 epitomizes Downtown elegance, featuring understated interiors by New York designer Antony Todd. This full-service cond-op building offers condo rules and allows subletting, co-purchasing, parent-purchasing and pied-a tierres. Amenities include 24-hour doorman service, live-in superintendent, landscaped common terrace, parking garage and a fitness center. Centrally located within walking distance to Madison Square Park, Flatiron, Chelsea, & Gramercy neighborhoods.

Features & Amenities

Interior Features

Dining Area Entrance Foyer Pantry Building Washer Dryer Install Allowed Common Area

Exterior Features

Building Courtyard Building Roof Deck

Appliances

Dryer Washer

Building Information

Financial Details

Common Charges $5,676/mo
Sale Price $1,650,000
Previous Price $2,495,000

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

138

Median Asking Price

$2.38M

Median $/Sqft

$1,791

Avg Days on Market

N/A

New This Week

10

Price Reduced

31%

Sold (30 Days)

4

Median Sale Price

$1.55M

Live data from RLS at REBNY • Updated 5/18/26, 10:11 PM EST

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Location

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4 W 21st Street #11-D, Flatiron, New York County • Near Fifth Avenue/Avenue of the Americas

Building Information

Official NYC property records for this building

2005
Year Built
21 years old
17
Floors
54
Residential Units
C6-4A
Zoning District
Elevator Apartments Historic District: Ladies' Mile Historic District

Tax & Assessment

Assessed Value: $18,077,400
Land Value: $900,000
Exemptions: $2,290

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

Lot Area: 9,384 SF
Building Area: 119,136 SF
Built FAR: 12.7
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 $5,676 per month. Confirm the exact amount with the listing broker before making an offer.

This property has 2 bedrooms and 2 full bathrooms and 1 half bathroom.

According to MLS records, the building was constructed in 2006, making it approximately 20 years old.

This listing is a condop, a hybrid structure where the building is legally a co-op but individual units are sold with greater flexibility, often including subletting rights similar to condos.

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) 416-7433
MLS® ID: RLS10337405
First Listed: 10/16/2015
Price Changed: 2/17/2016
Closed: 11/6/2019
Contract Date: 5/16/2019

Listing Courtesy of Compass - Steve Dawson

Listing Contact: (646) 382-1074

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 5/19/2026 at 2:11 AM UTC

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