15 Union Square W #4C
MLS® #RLS10996433
Listing by Compass
1
Bedroom
2.5
Baths
1,560
Sq. Ft.
1900
Year Built
Quick Summary
Property Highlights
- Exposure: North facing
- Climate Control: Central Air
- Character: Pre-war building (1900)
Property Details
Description
Spanning over 1,500 square feet, this designer loft is spacious, bright, and centrally located. Arches from the preserved original facade beautifully frame floor-to-ceiling windows, while the soaring 16-foot ceilings flood the space with natural light. The expansive living and dining area seamlessly blends into the open concept kitchen with top-of-the-line appliances such as a Subzero refrigerator and wine cooler, Viking range and hood, and a built-in Miele coffee machine. Additional conveniences on the main level include a powder room and an in-unit washer and dryer. A sleek metal staircase ascends to the second level of the residence, the primary suite. Features include an ensuite bath with a double vanity, walk-in shower, and stand-alone soaking tub. Additionally, there is a spacious walk-in closet, offering ample storage. Formerly the renowned Tiffany & Co headquarters, 15 Union Square West has been transformed into a distinguished 36-unit boutique condominium. Residents enjoy access to an array of five-star amenities in addition to the convenient location. These include a 24-hour doorman, concierge services by Luxury Attaché, a 50-foot lap pool, hot tub, saunas, massage room, and state-of-the-art fitness center with a yoga studio. Please note, there is a Flip Tax of 1% of the gross purchase due from the Purchaser at closing.
Features & Amenities
Interior Features
Appliances
Building Information
Financial Details
About Flatiron
View All Flatiron ListingsThe 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 NeighborhoodActive Listings
123
Median Asking Price
$2.35M
Median $/Sqft
$1,724
Avg Days on Market
N/A
New This Week
8
Price Reduced
31%
Sold (30 Days)
11
Median Sale Price
$2.80M
Live data from RLS at REBNY • Updated 3/23/26, 4:41 PM EST
Similar Listings in Flatiron
View All
Active
16 W 16TH Street #2TS
Co-op • RLS #RLS20074627
Active
16 W 16TH Street #2AS
Co-op • RLS #RLS20078785
Active
16 W 16TH Street #4LN
Co-op • RLS #RLS20076168
Active
16 W 16TH Street #1UN
Co-op • RLS #RLS20074696
Active
16 W 16TH Street #9GS
Co-op • RLS #RLS20050710
Active
16 W 16TH Street #9LS
Co-op • RLS #RLS20074932
Location
15 Union Square W #4C, Flatiron, New York County
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.
Listing Courtesy of Compass - Stephen Ferrara
Listing Contact: (646) 761-7038
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 Data display by Keller Williams NYC. Data last updated on 3/23/2026 at 8:41 PM UTC