15 Union Square W Unit 4 New York, NY 10003
Flatiron District NeighborhoodEstimated payment $34,071/month
Highlights
- Concierge
- 1-minute walk to 14 Street-Union Square
- City View
- Sixth Avenue Elementary School Rated A
- Indoor Pool
- 1-minute walk to Union Square Park
About This Home
This exceptional designer home at 15 Union Square West offers the best of NYC living with dramatic ceiling heights, stunning arched windows, and complete serenity across two levels. Located in the heart of Downtown at the intersection between Greenwich Village, Gramercy Park, and Flatiron, Union Square Park provides a backyard setting with 6.5 acres of green space and a weekly farmer's market.
The bright, open great room is the heart of the residence, featuring soaring 17-foot double-height ceilings and iconic North-facing arched cast-iron window frames from the original Tiffany's building, now set behind a sleek glass facade. The expansive space accommodates oversized furniture, a 10-seat dining table, and a built-in dry bar with lit glassware cabinetry, making it perfect for living and entertaining.
The kitchen seamlessly connects to the living area, sharing the same North-facing views and abundant natural light. It boasts an elongated Calacatta marble island, top-tier stainless steel appliances-including a Viking six-burner gas range, Sub-Zero refrigerator, and wine cooler-and sleek white cabinetry complemented by a stainless steel backsplash and contemporary lighting.
A stainless steel and glass staircase leads to the private master suite, a spacious oasis with southern exposures, two oversized windows, two expansive closets, and room for additional furniture or a workstation. The en-suite bathroom features custom-designed finishes by Vicente Wolf, a double sink vanity, a wet room with dual shower heads, and a claw-foot soaking tub.
The lower level offers two generous secondary bedrooms with en-suite bathrooms, custom closets, and southern exposures. A mahogany-paneled powder room on the main level conceals a laundry closet with a full-sized Miele washer and dryer. Additional storage includes a foyer closet and linen closets on the upper level. Other highlights include mahogany flooring, central HVAC, and an integrated Crestron system for shading, lighting, and climate control.
A conversion of Tiffany & Company's 19th century headquarters, 15 Union Square West is a coveted high-end boutique condominium with hotel-like amenities including a 24-hour doorman, on-site concierge services, a zen spa with a 50' lap pool, oversized whirlpool, state-of-the-art fitness center with yoga studio and a recreation room. The premier location is in the heart of it all, near incredible cafes and restaurants, and the best of Fifth Avenue shopping.
This is a co-listing with Compass/Corcoran. Please contact us to schedule a viewing.
Property Details
Home Type
- Condominium
Est. Annual Taxes
- $65,724
Year Built
- Built in 1870
HOA Fees
- $7,401 Monthly HOA Fees
Parking
- Garage
Home Design
- Entry on the 4th floor
Interior Spaces
- 2,670 Sq Ft Home
- City Views
Bedrooms and Bathrooms
- 3 Bedrooms
Laundry
- Laundry in unit
- Washer Dryer Allowed
Additional Features
- Indoor Pool
- No Cooling
Listing and Financial Details
- Legal Lot and Block 1118 / 00842
Community Details
Overview
- 36 Units
- High-Rise Condominium
- 15Usw Condos
- Flatiron Subdivision
- Property has 2 Levels
Amenities
- Concierge
- Sauna
Map
Home Values in the Area
Average Home Value in this Area
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $65,724 | $529,968 | $70,040 | $459,928 |
| 2024 | $65,724 | $525,706 | $70,040 | $455,666 |
| 2023 | $64,223 | $523,542 | $70,040 | $453,502 |
| 2022 | $62,851 | $513,698 | $70,040 | $443,658 |
| 2021 | $60,847 | $496,023 | $70,040 | $425,983 |
| 2020 | $48,909 | $549,394 | $70,040 | $479,354 |
| 2019 | $46,415 | $537,041 | $70,040 | $467,001 |
| 2018 | $53,571 | $518,274 | $70,041 | $448,233 |
| 2017 | $48,570 | $406,958 | $70,041 | $336,917 |
| 2016 | $47,582 | $389,696 | $70,040 | $319,656 |
| 2015 | $23,041 | $400,549 | $70,041 | $330,508 |
| 2014 | $23,041 | $388,656 | $70,041 | $318,615 |
Property History
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 10/30/2025 10/30/25 | Sold | $4,025,000 | +136.8% | $1,507 / Sq Ft | View Prior Sale |
| 03/25/2025 03/25/25 | Pending | -- | -- | -- | |
| 03/10/2025 03/10/25 | Sold | $1,700,000 | -60.0% | $1,090 / Sq Ft | View Prior Sale |
| 02/18/2025 02/18/25 | For Sale | $4,250,000 | +97.7% | $1,592 / Sq Ft | |
| 01/18/2025 01/18/25 | Pending | -- | -- | -- | |
| 11/18/2024 11/18/24 | Price Changed | $2,150,000 | -6.5% | $1,378 / Sq Ft | |
| 08/08/2024 08/08/24 | Price Changed | $2,300,000 | -7.8% | $1,474 / Sq Ft | |
| 04/29/2024 04/29/24 | For Sale | $2,495,000 | 0.0% | $1,599 / Sq Ft | |
| 05/11/2023 05/11/23 | Rented | $29,500 | 0.0% | -- | |
| 04/21/2023 04/21/23 | Under Contract | -- | -- | -- | |
| 04/11/2023 04/11/23 | For Rent | $29,500 | +18.0% | -- | |
| 07/15/2022 07/15/22 | Rented | $25,000 | 0.0% | -- | |
| 05/18/2022 05/18/22 | For Rent | $25,000 | +145.1% | -- | |
| 11/25/2019 11/25/19 | Rented | -- | -- | -- | |
| 10/26/2019 10/26/19 | Under Contract | -- | -- | -- | |
| 10/02/2019 10/02/19 | For Rent | $10,200 | -70.9% | -- | |
| 08/15/2018 08/15/18 | Rented | -- | -- | -- | |
| 08/03/2018 08/03/18 | Rented | -- | -- | -- | |
| 07/16/2018 07/16/18 | Under Contract | -- | -- | -- | |
| 07/04/2018 07/04/18 | Under Contract | -- | -- | -- | |
| 06/16/2018 06/16/18 | For Rent | $35,000 | +75.0% | -- | |
| 05/24/2018 05/24/18 | For Rent | $20,000 | 0.0% | -- | |
| 01/29/2015 01/29/15 | Sold | -- | -- | -- | View Prior Sale |
| 12/30/2014 12/30/14 | Pending | -- | -- | -- | |
| 01/11/2011 01/11/11 | For Sale | $4,900,000 | -- | $1,843 / Sq Ft |
Purchase History
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Deed | $5,800,000 | -- | |
| Deed | $7,500,000 | -- |
Source: Real Estate Board of New York (REBNY)
MLS Number: RLS20003706
APN: 0842-1109
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