Milton Coste

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(917) 416-7433
15 UNION Square W #30
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Active For Sale Condo

$7,250,000

$2,594 per sq ft

15 UNION Square W #30

Flatiron, Manhattan

15Usw

MLS® #RLS20077143

RLS at REBNY

Listing by Corcoran Group

3

Bedrooms

4.5

Baths

2,795

Sq. Ft.

1870

Year Built

Quick Summary

Bedrooms 3
Bathrooms 4 full, 1 half
Living Area 2,795 sq ft
Year Built 1870
Ownership Condo
HOA/Common Charges $8,121/mo
Parking Garage
Neighborhood Flatiron
Floor 8 of 12

Property Highlights

  • Views: City, Park Greenbelt
  • Exposure: East,North facing
  • Fireplace: 1 fireplace

Property Details

Type Condo
Ownership Condominium
Total Rooms 6
Baths 3 Full, 1 Half
Floor 8 of 12
View City, Park Greenbelt
Exposure East,North
Pets Yes
Year Built 1870
Living Area 2,795 sq ft
Parking Garage Available
Structure Type HighRise
Basement Other
Parcel # 0842-1135
Block/Lot 00842/1135

Description

Apartment 30 (8B) presents an exceptional layout distinguished by scale, balance, and architectural poise-qualities seldom achieved in contemporary construction. This elegant three-bedroom, three-and-a-half-bath residence is defined by grand proportions, soaring ceilings, and dramatic floor-to-ceiling windows that frame unobstructed, cinematic views of Union Square Park. Positioned on the tranquil eighth floor, the home enjoys remarkable privacy and minimal ambient noise, benefiting from the Square's distinctive traffic pattern.

The living and entertaining spaces are both refined and inviting, centered around a gas-burning fireplace that lends warmth and intimacy. The custom-designed kitchen serves as a striking focal point, featuring a marble-topped island with stainless steel and mahogany detailing-an ideal setting for both formal entertaining and everyday living.

Each generously proportioned bedroom offers impressive ceiling heights, abundant closet space, and luxurious en-suite baths appointed with travertine marble, porcelain Xilo tile, and oak vanities topped in Corian. A gracious powder room and a fully equipped laundry room further enhance the residence's thoughtful functionality.

Residents enjoy access to an extraordinary collection of amenities, newly renovated, including a 50-foot lap pool, cold plunge, whirlpool, private cabanas, an expansive fitness center, yoga studio, massage room, saunas, and hot tubs. White-glove service is paramount, with a 24-hour doorman.

15 Union Square West occupies a singular place in New York's architectural and commercial history. In 1870, Tiffany & Co. selected this address for its first headquarters, commissioning a cast-iron edifice by architect John Kellum-hailed by The New York Times as "a palace of jewels." For more than three decades, Tiffany's presence anchored Union Square's commercial ascendancy. Today, a striking zinc-framed glass facade stands just forward of the original 1870 structure, preserving its iconic arched windows and historic character. The result is a masterful dialogue between heritage and modernity-culminating in what remains the only condominium in Manhattan with direct park frontage on Union Square Park.

Flip Tax: 1% of the gross purchase price, payable by the purchaser at closing.

Features & Amenities

Interior Features

Dining Area Building None Washer Hookup In Unit Fireplace (1)

Exterior Features

None

Building Amenities

Bike Storage Concierge Elevators Indoor Pool Sauna Spa Hot Tub Sauna

Appliances

Washer Dryer Allowed

Building Information

Building 15Usw
Total Units 36
Stories 12
Structure HighRise

Financial Details

Common Charges $8,121/mo

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

118

Median Asking Price

$2.50M

Median $/Sqft

$1,787

Avg Days on Market

N/A

New This Week

11

Price Reduced

26%

Sold (30 Days)

7

Median Sale Price

$2.75M

Live data from RLS at REBNY • Updated 3/13/26, 9:47 PM EST

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Location

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15 UNION Square W #30, Flatiron, New York County

Floor Plans

Floor Plan
MLS® ID: RLS20077143
First Listed: 3/13/2026
On Market: 3/13/2026
Price Changed: 3/13/2026
Contract Date: 3/13/2026

Listing Courtesy of Corcoran Group - Deborah A Kern

Listing Contact: (917) 710-1150

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.

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 3/14/2026 at 1:47 AM UTC

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