15 Union Square W #16
MLS® #RLS20082312
Listing by Triumph Property Group Ltd
3
Bedrooms
3.5
Baths
2,849
Sq. Ft.
1870
Year Built
Quick Summary
Property Highlights
- Exposure: East,North facing
- Style: Prewar architecture
- Climate Control: Central Air
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 30, 2025 | $7,995,000 | - |
| Currently | May 24, 2026 | $7,995,000 | - |
Description
15 Union Square West — Residence 16
A rare opportunity to own a dramatic corner three-bedroom, three-and-a-half-bath residence in the iconic 15 Union Square West, once home to Tiffany & Co.’s headquarters.
With 16-foot ceilings and soaring arched windows overlooking Union Square Park, this home offers scale, light, and drama that are simply unmatched. The expansive living and dining space flows into a custom chef’s kitchen with professional-grade appliances, marble island, and bespoke finishes—perfect for both entertaining and everyday living. Each bedroom features an en-suite bath with refined stone and wood finishes, while a powder room and full laundry room add convenience.
* Large Storage Transfers with Unit
15 Union Square West combines historic cast-iron architecture with a modern zinc-and-glass facade, offering full-service luxury and premier amenities, including a 50-foot swimming pool, cold plunge, whirlpool, spa with massage rooms and saunas, fitness center, yoga studio, residents’ lounge, and 24-hour doorman/concierge.
Situated directly on Union Square Park, this boutique condominium places you at the center of downtown’s most vibrant neighborhoods. The Union Square Greenmarket, Whole Foods, and some of Manhattan’s best restaurants—including ABC Kitchen, Gramercy Tavern, and Breads Bakery—are at your doorstep. A true transportation hub, the N, Q, R, W, 4, 5, 6, and L trains are just steps away, with the West Village, Flatiron, Gramercy, NoMad, and Washington Square Park all within walking distance.
This rare residence offers an unparalleled chance to own a home of this magnitude in Union Square’s most distinguished full-service condominium
*1% Flip Tax
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Appliances
Building Information
Financial Details
About Flatiron
View All Flatiron ListingsThe 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 NeighborhoodActive Listings
137
Median Asking Price
$2.42M
Median $/Sqft
$1,788
Avg Days on Market
N/A
New This Week
6
Price Reduced
31%
Sold (30 Days)
9
Median Sale Price
$1.70M
Live data from RLS at REBNY • Updated 5/24/26, 1:38 AM EST
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Location
15 Union Square W #16, Flatiron, New York County • Near East 14th Street/East 15th Street
Floor Plans
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
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
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
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.
Frequently Asked Questions
Common questions about this property
The current listed common charges are $8,157 per month. Confirm the exact amount with the listing broker before making an offer.
The current listed annual property tax is $66,324, or roughly $5,527 per month. Verify the current assessment with your attorney before closing.
This property has 3 bedrooms and 3 full bathrooms and 1 half bathroom.
The listed interior living area is 2,849 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1870, making it approximately 156 years old.
This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.
Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.
At the current list price of $7,995,000 for 2,849 sq ft, the asking price per square foot is approximately $2,806. 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) 416-7433Listing Courtesy of Triumph Property Group Ltd - Shachar Dinour
Listing Contact: (646) 693-1212
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 5/24/2026 at 5:38 AM UTC