Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $4,750,000

Listed at $5,850,000 · Sold 18.8% below asking · Closed May 4, 2021

31 W 21ST Street #4
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Closed For Sale Condo

$5,850,000

$1,241 per sq ft

31 W 21ST Street #4

Flatiron, Manhattan

MLS® #RLS10607555

RLS at REBNY

Listing by The Corcoran Group

3

Bedrooms

3

Baths

4,713

Sq. Ft.

1907

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3
Living Area 4,713 sq ft
Year Built 1907
Ownership Condo
HOA/Common Charges $2,750/mo
Property Taxes $56,040/yr
Neighborhood Flatiron
Floor 4 of 11

Property Highlights

  • Exposure: North,South,West facing
  • Style: Prewar architecture
  • Climate Control: Central Air

Property Details

Type Condo
Ownership Condominium
Baths 3 Full
Floor 4 of 11
Exposure North,South,West
Cooling Central Air
Pets Yes
Cross Street 5 AVENUE and AVENUE OF THE AMERICAS
Year Built 1907
Living Area 4,713 sq ft
Architectural Style Prewar
Parcel # 0823-1205

Description

Spectacular 4,713 square foot loft with towering 11?-5? high ceilings, three exposures and twenty-four double-sets of Citiquiet windows is in a highly sought after boutique prewar condominium. A keyed elevator opens to a stunning residence with a 45 foot x 36 foot entertaining space, a pocket home office, grand dining space and open professional sized kitchen. The newly renovated kitchen has two preparation islands with 2? thick marble countertops that cascade to the polished concrete floor. The Rejuvenation lighting is thoroughly original. A breakfast bar seats four, and overlooks the sprawling counter tops, custom designed cabinetry with soft-close drawers and doors, interior lighting, four pull-out pantry cabinets with rotating Hafele interiors, two pot drawers and incredible amount of storage. Appliances include two full-size ovens, a wall steam oven and microwave and 5-burner cook top all by Wolf. The oversized Sub-Zero refrigerator is finished to matched the cabinetry and there are two separate Sub-Zero freezer drawers, and a Bosch dishwasher. The back splash is French antiqued silver mirrored tiles and the face of the underlit breakfast bar is finished with distressed gold-leaf tiles, all from Ann Sacks. This is an ideal space for those who love to entertain. The guest powder room cleverly becomes a second en-suite full bathroom for the corner primary suite, giving it two full baths. There are two walk-in closets large enough to function as dressing rooms. The spa-like primary bath has dual sinks, an enormous walk-in steam shower with rain head and multiple wall jets, and an oversized whirlpool tub. There is a large study complete with built in bookcases, and cabinets creating a perfect reading room or home office. The current layout has a partitioned guest bedroom and an enormous media room, which can easily become three proper sized bedrooms. Additionally, there is a separate office and a third full bath. The mechanical room houses the central air and humidification systems plus additional storage. Leading to the laundry room, there is a second large refrigerator, tons of storage cabinets and shelves. The laundry room has plenty of storage as well as a utility closet that houses an extra water heater for the unit. This boutique condominium, built in 1910 and converted to a condominium in 2001, has 12 floors and 11 residences. The building has a managing superintendent and two elevators?one passenger and one large service. Perfectly situated in the heart of the Flatiron District, near Madison Square Park, Union Square, Trader Joes, Whole Foods, Eataly, fine dining, wonderful shopping and convenient transportation.

Features & Amenities

Interior Features

Den Separate Formal Dining Room Eat In Kitchen Building Washer Dryer Install Allowed Common On Floor

Appliances

Dryer Washer

Building Information

Total Units 11
Stories 11
Style Prewar

Financial Details

Common Charges $2,750/mo
RE Taxes $56,040/yr ($4,670/mo)
Original Price $6,250,000
Sale Price $4,750,000

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

120

Median Asking Price

$2.27M

Median $/Sqft

$1,690

Avg Days on Market

N/A

New This Week

5

Price Reduced

31%

Sold (30 Days)

11

Median Sale Price

$2.80M

Live data from RLS at REBNY • Updated 3/25/26, 5:25 AM EST

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Location

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31 W 21ST Street #4, Flatiron, New York County • Near 5 AVENUE and AVENUE OF THE AMERICAS

Floor Plans

Floor Plan
Floor Plan
MLS® ID: RLS10607555
First Listed: 3/28/2019
Closed: 5/4/2021
Contract Date: 4/24/2019

Listing Courtesy of The Corcoran Group - Amy Katcher

Listing Contact: (917) 678-4719

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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 3/25/2026 at 9:25 AM UTC

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