Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
4 W 21st Street #14A
Interested in this property?
Active For Sale Condop

$1,200,000

$980 per sq ft

4 W 21st Street #14A

Flatiron, Manhattan

4W21

MLS® #RLS20081101

RLS at REBNY

Listing by Compass

2

Bedrooms

2

Baths

1,225

Sq. Ft.

2006

Year Built

Quick Summary

Bedrooms 2
Bathrooms 2
Living Area 1,225 sq ft
Year Built 2006
Ownership Condop
HOA/Common Charges $5,689/mo
Parking Garage
Neighborhood Flatiron
Floor 14 of 17

Property Highlights

  • Exposure: South facing
  • Climate Control: Central Air
  • Parking: Private garage

Property Details

Type Condop
Ownership Condop
Total Rooms 6
Baths 2 Full
Floor 14 of 17
Exposure South
Heating Central
Cooling Central Air
Pets Yes, CatsOk, DogsOk
Year Built 2006
Living Area 1,225 sq ft
Parking Garage Available
Parking Features Garage
Structure Type HighRise
Flooring Hardwood
Furnished Unfurnished
Parcel # 0822-0045-00004-000-000014A
Block/Lot 00822/0045

Listing History

Event Date Price Change
Listed Apr 2, 2026 $1,200,000 -
Currently May 18, 2026 $1,200,000 -

Description

More Elevated / Luxury-Forward Version Sophisticated Flatiron loft living begins at 4 West 21st Street. This sun-filled two-bedroom, two-bath residence blends downtown character with refined modern finishes in one of Manhattan’s most sought-after full-service buildings. With 9.5-foot ceilings, floor-to-ceiling south-facing windows, and an expansive open layout, the home offers a seamless balance of volume, light, and style. The oversized living and dining space flows into a beautifully appointed chef’s kitchen with Poliform Varenna cabinetry, Pied Auberge stone counters and backsplash, Sub-Zero and Miele appliances, and a large island designed for both entertaining and everyday use. The tranquil primary suite features an enormous walk-in California Closet and a spa-caliber bath with radiant heated floors, a deep soaking tub, frameless glass shower, and double vanity. A spacious second bedroom offers excellent flexibility for guests, a nursery, or a polished work-from-home setup. Additional features include dark oak floors, generous storage, a vented washer/dryer, and a second full bath. Designed by acclaimed architect Hugh Hardy, 4 West 21st Street is a coveted Flatiron condop offering a 24-hour doorman, fitness center, parking garage, landscaped courtyard, children’s play area, and live-in superintendent. With no board approval required and policies that allow pets, unlimited subletting, pieds-à-terre, co-purchasing, gifting, and parents buying for children, this home offers a rare level of flexibility in a prime Manhattan location near Madison Square Park, Union Square, Chelsea, and NoMad. Capital assessment: $894.31/month through June 2027. CONTACT US TODAY FOR A PRIVATE TOUR.

Features & Amenities

Interior Features

High Ceilings Recessed Lighting Soaking Tub Walk In Closets Building Washer Dryer Install Allowed Common On Floor Common Area In Unit Flooring: Hardwood

Building Amenities

Concierge Elevators Fitness Center

Appliances

Dishwasher Range Refrigerator

Building Information

Building 4W21
Building Data View Compliance & Permits
Total Units 56
Stories 17
Structure HighRise

Financial Details

Common Charges $5,689/mo
Land Lease Yes

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

11

Price Reduced

32%

Sold (30 Days)

4

Median Sale Price

$1.55M

Live data from RLS at REBNY • Updated 5/18/26, 10:56 AM EST

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Location

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4 W 21st Street #14A, Flatiron, New York County

Floor Plans

Floor Plan 1

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 $5,689 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $0, or roughly $0 per month. Verify the current assessment with your attorney before closing.

This property has 2 bedrooms and 2 full bathrooms.

The listed interior living area is 1,225 square feet. Verify dimensions independently during due diligence.

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.

At the current list price of $1,200,000 for 1,225 sq ft, the asking price per square foot is approximately $980. 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 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: RLS20081101
First Listed: 4/2/2026
On Market: 4/2/2026
Price Changed: 4/2/2026
Contract Date: 3/25/2026

Listing Courtesy of Compass - ELKIN J SERNA

Listing Contact: (917) 578-9551

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 5/18/2026 at 2:56 PM UTC

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