---
title: "15 UNION Square #30, New York City, NY 10003"
description: "15 UNION Square #30, New York City, NY 10003 — Flatiron, New York City, NY. Listing Price $6,995,000. Price Reduced: Reduced $255,000 (3.5%) from $7,250,000 on May 5, 2026. 3 bed, 4 bath, 2,795 sqft Illustrative Buyer Commission Share of $104,925 at closing, based on a 3% buyer-broker commission."
url: "https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10003/15-union-square-30-ny-10003"
source: "Real Estate Rebate Team"
dateModified: "2026-09-14T23:04:56.477Z"
status: "Active"
---

# 15 UNION Square #30, New York City, NY 10003

Flatiron, New York City, NY

Courtesy of Corcoran Group

Last updated: September 14, 2026, 7:04 PM

## At a Glance

- **Listing Price**: $6,995,000
- **Price Reduced**: Reduced $255,000 (3.5%) from $7,250,000 on May 5, 2026
- **Beds**: 3
- **Total Baths**: 4
- **Sqft**: 2,795
- **Common Charges**: $8,121 / mo
- **Price per Sqft**: $2,503
- **Brokerage Fee**: Share Eligible

## The Private Brokerage Advantage

As an independent luxury buyer representative, Régis shares 50% of the buyer-side commission he actually receives on your purchase. Eligible buyers receive that Buyer Commission Share directly at closing to offset closing costs, down payments, or renovations. The figures below are illustrative, based on a **3% buyer-broker commission**; your share follows the commission offered on the transaction.

- **Contract Purchase Price**: $6,995,000
- **Illustrative Buyer Commission Share**: -$104,925*
- **Illustrative Net Cost**: $6,890,075

*Illustrative Buyer Savings of $104,925 — 50% of a 3% buyer-broker commission, shared at closing.*

[Request a private tour](https://realestaterebatesnewyork.com/contact) · [Estimate your Buyer Commission Share](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator)

## Photos (10)

![15 UNION Square #30, New York City, NY 10003 — photo 1 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/6a288c74-eda9-4a12-b277-969e18ae9e17.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 2 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/bda73af1-78c8-4401-884f-484ff215f728.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 3 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/6b1150e4-f236-4d65-9e59-efd931590a83.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 4 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/af4748cd-1ed4-4a5a-9356-389a5ddd79ee.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 5 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/87aa1722-dcad-4cca-87de-7ec016e5907d.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 6 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/f5ca23ca-6e20-41c2-9780-d044d9a07b40.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 7 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/2737862f-d05c-4948-8d4c-63ae8b090db7.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 8 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/5a077338-add9-48db-a1bc-7a6f3798e6ae.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 9 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/3567b9a5-7b76-4f21-a031-af45014b96b2.jpg)
![15 UNION Square #30, New York City, NY 10003 — photo 10 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/de5ba4f4-922a-41f5-9ded-9ba271367151.jpg)

## Property Overview

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.

## Property Details

- **Property Type**: Condominium
- **Beds**: 3
- **Total Baths**: 4
- **Rooms**: 6
- **Sqft**: 2,795 sqft
- **Stories**: 12
- **Year Built**: 1870
- **Price per Sqft**: $2,503
- **Common Charges**: $8,121 / Monthly
- **Listed On**: Sep 14, 2026
- **Days on Market**: 1 Days

### Residence Features

- Washer Hookup
- In Unit
- Dining Area
- High Ceilings
- Washer Dryer Allowed
- City
- Park/Greenbelt

### Building Amenities

- Sauna

## Sales Evidence

### Recent closed sales

14 apartments at 15 Union Square have recorded sales since September 2021, the most recent for $4,025,000 in October 2025. Prices are the figures recorded with the City, not asking prices.

| Unit | Beds | Sq Ft | Sold Price | $/ft² | Sold | Source |
| --- | --- | --- | --- | --- | --- | --- |
| 13 (Apartment) | 3 | 2,670 | $4,025,000 | $1,507/ft² | October 30, 2025 | City record · MLS |
| 31 (Apartment) | 2 | 2,000 | $3,850,000 | $1,925/ft² | July 3, 2025 | MLS |
| 4C (Apartment) | 1 | 1,560 | $1,700,000 | $1,090/ft² | March 10, 2025 | MLS |
| 11 (Apartment) | — | 1,560 | $1,700,000 | $1,090/ft² | March 7, 2025 | City record |
| 8 (Apartment) | — | 449 | $750,000 | $1,670/ft² | July 1, 2024 | City record |
| 9 (Apartment) | — | 2,189 | $6,450,000 | $2,947/ft² | March 8, 2024 | City record |
| 10 (Apartment) | — | 2,849 | $7,600,000 | $2,668/ft² | January 19, 2024 | City record |
| 1 (Apartment) | 1 | 755 | $1,480,000 | $1,960/ft² | September 23, 2022 | City record · MLS |
| 29 (Apartment) | 2 | 1,963 | $4,250,000 | $2,165/ft² | June 2, 2022 | City record · MLS |
| 6-F (Apartment) | Studio | 449 | $765,000 | $1,704/ft² | March 11, 2022 | MLS |
| 25 (Apartment) | — | 449 | $725,000 | $1,615/ft² | March 8, 2022 | City record |
| 8-C (Apartment) | 2 | 1,763 | $3,500,000 | $1,985/ft² | November 18, 2021 | MLS |
| #31 (Apartment) | 2 | 1,948 | $3,325,000 | $1,707/ft² | November 9, 2021 | City record |
| 17 (Apartment) | 1 | 1,263 | $2,550,000 | $2,019/ft² | September 24, 2021 | City record · MLS |

Every row is a recorded transaction, including ancillary spaces such as storage and staff rooms where they were sold separately. Those are excluded from the benchmark below.

### How this price compares

The median closed price for comparable condo three-bedroom sales in Flatiron is $4,200,000, based on 28 sales between September 2024 and July 2026. This home is asking $6,995,000, $2,795,000 above that median. The middle half of those sales closed between $3,412,500 and $5,002,500.

- **Median closed price**: $4,200,000
- **Middle half**: $3,412,500 – $5,002,500
- **Based on**: 28 condo three-bedroom sales in Flatiron
- **Period**: September 2024 – July 2026
- **Median $/ft²**: $2,019/ft²

Across the 26 of these sales with a published asking price, the median closed at 90.5% of what it originally asked. 96% of them closed below the original ask.

This building has not had enough comparable sales of its own in the period to support a median, so the benchmark is drawn from Flatiron instead.

### How these sales were negotiated

- **Sold vs original ask**: 90.5% of the original ask
- **Closed below ask**: 96% of 26 sales
- **Listed → in contract**: 140 days (about 20 weeks)
- **In contract → closed**: 50 days (about 7 weeks)

Across the 26 of these sales with a published asking price, the median closed at 90.5% of what it originally asked. 96% of them closed below the original ask.

Half of these homes were in contract within 140 days (about 20 weeks) of coming to market, based on the 27 with a recorded listing date.

Once a deal was agreed, closing took a further 50 days (about 7 weeks), based on the 27 with both dates recorded.

These are two separate periods measured on different clocks — time to find a buyer, and time from agreed deal to closing. They are medians of different sets of sales and do not add together into a single "days on market" figure.

Based on 28 condo three-bedroom sales in Flatiron, September 2024 – July 2026. Each figure counts only the sales that recorded the dates it needs, which is why the denominators differ.

### Price trend

Median price per square foot for sales at 15 Union Square, 2021 to 2024. Price per square foot is used rather than sale price so the line follows the market rather than whichever apartments happened to change hands that year.

| Year | Median $/ft² | Sales |
| --- | --- | --- |
| 2021 | $1,863/ft² | 4 (thin) |
| 2022 | $1,960/ft² | 3 (thin) |
| 2024 | $2,668/ft² | 3 (thin) |

Years marked "thin" rest on fewer than 5 sales, where a single unusual apartment moves the median a long way. Read those points as the small samples they are rather than as the market turning.

Sale prices are the consideration recorded with the City in ACRIS, and each sale is dated by the day the City recorded it. A closing date reported to the MLS typically falls one to two weeks earlier. Recorded sales describe what has already happened and are not an appraisal, a valuation, or an estimate of what this home will sell for.

[See every recorded sale at 15 Union Square](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/15-union-square)

## Price and Property History for 15 UNION Square, Unit 30

Review the recorded listing activity for 15 UNION Square, Unit 30, including asking-price changes and prior market dates.

- **Latest price change**: Reduced by $255,000, or 3.5%, on May 5, 2026
- **Originally listed**: March 13, 2026 at $7,250,000
- **Current asking price**: $6,995,000

| Date | Price | Listing event |
| --- | --- | --- |
| August 10, 2026 | $6,995,000 | Returned to the market |
| May 5, 2026 | $6,995,000 | Asking price reduced by $255,000, or 3.5% |
| March 13, 2026 | $7,250,000 | Listed for sale by Corcoran Group |

## Property Tax History

Taxes at 15 UNION Square #30 were $68,300 in 2026, up 2.5% from 2025.

| Year | Tax Assessment | Land | Additions | Billable Value | Property Tax | Tax Rate |
| --- | --- | --- | --- | --- | --- | --- |
| 2026 (FY 2026/27) | $576,313 | $70,423 | $505,890 | $546,399 | $68,300 | 12.5% (estimated) |
| 2025 (FY 2025/26) | $573,822 | $70,423 | $503,399 | $532,862 | $66,608 | 12.5% (estimated) |
| 2024 (FY 2024/25) | $548,860 | $70,423 | $478,437 | $528,577 | $66,072 | 12.5% |
| 2023 (FY 2023/24) | $526,402 | $70,423 | $455,979 | $526,402 | $65,811 | 12.502% |
| 2022 (FY 2022/23) | $516,504 | $70,423 | $446,081 | $516,504 | $63,360 | 12.267% |
| 2021 (FY 2021/22) | $498,733 | $70,423 | $428,310 | $498,733 | $61,020 | 12.235% |
| 2020 (FY 2020/21) | $552,394 | $70,423 | $481,971 | $552,394 | $67,762 | 12.267% |
| 2019 (FY 2019/20) | $539,974 | $70,423 | $469,551 | $448,526 | $55,945 | 12.473% |
| 2018 (FY 2018/19) | $521,104 | $70,423 | $450,681 | $416,631 | $52,546 | 12.612% |
| 2017 (FY 2017/18) | $409,180 | $70,423 | $338,757 | $383,952 | $48,835 | 12.719% |
| 2016 (FY 2016/17) | $678,854 | $122,010 | $556,844 | $642,952 | $82,889 | 12.892% |
| 2015 (FY 2015/16) | $697,759 | $122,011 | $575,748 | $637,942 | $82,186 | 12.883% |
| 2014 (FY 2014/15) | $677,041 | $122,011 | $555,030 | $620,179 | $79,724 | 12.855% |
| 2013 (FY 2013/14) | $619,751 | $122,011 | $497,740 | $678,302 | $89,163 | 13.145% |
| 2012 (FY 2012/13) | $597,594 | $122,011 | $475,583 | $766,916 | $101,087 | 13.181% |
| 2011 (FY 2011/12) | $383,636 | $70,422 | $313,214 | $535,069 | $71,876 | 13.433% |
| 2010 (FY 2010/11) | $287,325 | $70,424 | $216,901 | $488,177 | $65,186 | 13.353% |

The City has not published the official FY2026/27 and FY2025/26 tax rates yet. We calculated the tax for those years using the prior year’s rate, so treat them as an estimate rather than a figure the City has adopted. Every rate without the Estimated marker is the published one.

Tax Assessment is the assessed value on the City’s roll, and it is the figure other listing sites publish. It is not what the bill is calculated on. New York phases assessment changes in gradually for some tax classes, so the City bills the Billable Value shown beside it, less any exemption the owner holds. It usually trails the assessment, and it can sit above it for a few years after an assessment falls.

Figures are the New York City Department of Finance assessment roll for tax lot 1008421135. Assessed and billable values are determined by the City for tax purposes and are not an appraisal or an estimate of market value. Tax classes and rates are set annually and can change.

[How we source and calculate NYC property tax data](https://realestaterebatesnewyork.com/nyc-property-tax-data-methodology)

## About The Building

### 15 Union Square

Flatiron · Condominium

15 Union Square, New York, NY 10003

A building in Flatiron, currently featuring 3 active listings.

- **Year Built**: 1870
- **Total Units**: 3
- **Floors**: 12

[View the building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/15-union-square)

### Available Residences — For Sale (3)

| Unit | Beds | Baths | Size | Price / Ft² | Price | Listing Office | Listed Date | Days on Market |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [30](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10003/15-union-square-30-ny-10003) | 3 | 4 | 2,795 sqft | $2,503 | $6,995,000 (-3.5%) | Corcoran Group | Sep 14, 2026 | 1 days |
| [16](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10003/15-union-square-16-ny-10003) | 3 | 4 | 2,849 sqft | $2,806 | $7,995,000 — In contract | Triumph Property Group Ltd | Sep 30, 2025 | 350 days |
| [3-D](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10003/15-union-square--d-3D-ny-10003) | 2 | 3 | 2,282 sqft | $1,751 | $3,995,000 (-6.0%) | Peter Ashe | May 4, 2026 | 134 days |

## Estimated Monthly Payment

**$43,492 / month**, assuming a 20% down payment ($1,399,000), a 6.5% interest rate and a 30-year term. The page's calculator lets a buyer change all three.

- **Principal & Interest**: $35,371
- **Common Charges**: $8,121

Estimates only. Actual payments may vary. Confirm terms with your lender.

## Potential NYC Second-Home Tax

This property may be subject to New York City’s non-primary residence surcharge if it is not used as a qualifying primary residence. The surcharge is based on the NYC Department of Finance market value, not the listing price.

[Estimate the Potential Surcharge](https://realestaterebatesnewyork.com/calculators/nyc-second-home-tax-calculator)

## Flatiron

Overview of Flatiron

[Explore Flatiron](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/flatiron) · [All Neighborhoods](https://realestaterebatesnewyork.com/neighborhoods)

### Nearby Flatiron

- [Gramercy real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/gramercy)
- [Kips Bay real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/kips-bay)
- [Chelsea real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/chelsea)
- [Greenwich Village real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/greenwich-village)
- [Murray Hill real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/murray-hill)
- [Stuyvesant Town real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/stuyvesant-town)

## Related Links

- [15 Union Square — building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/15-union-square)
- [Flatiron neighborhood guide](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/flatiron)
- [Estimate your Buyer Commission Share and closing costs](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator)
- [Contact Régis Roumila](https://realestaterebatesnewyork.com/contact)

---

> RLS IDX Data display by Real Estate Rebate Team. This 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. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

> All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and the number of bedrooms listed is for informational purposes and is not a legal conclusion. Please consult with your own architect or engineer for exact dimensions and legal specifications.