Updated 3 days ago
In contract
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860 Union Street

Park Slope, Brooklyn | Park Ave & Myrtle Ave

12 Rooms6 Beds6 Baths3,894 Square FeetMulti-Family

$3,750,000
floors / apts2 / 2
Lot Size29'x90'
Built Size25'x80'
ZoneR7B
Building TypeHouse
RE Taxes$24,181
Price Per SF
$963

Listing Features

  • Gas Heat

Outdoor space and views

  • Balcony

Property Description for 860 Union Street

Welcome to your home in the Park Slope neighborhood of Brooklyn, New York City was built as the Victorian Gothic carriage house of the Maxwell mansion, which was built sometime between 1875 and 1896, and was torn down in 1922. The 25' ft wide carriage house received a new facade in 1923 designed by Caughey & Evans. The building is one of the few carriage houses in Park Slope; and is a local attraction, which dazzles its passersby. It is located in the Park Slope Historic District (minutes from the park). This awe-inspiring magnificent architectural masterpiece is majestically steeped in exquisite original word work & finely crafted detail throughout (mantle fireplaces, built-in China cabinets, parquet floors, stained glass, towering, tall ceilings, and more). Currently configured as a two-family residence with 3 ensuite bedrooms, formal living, formal dining room & kitchen for each unit- or perfectly ideal as a conversion to the ultimately sublime single-family mansion. This stunning and ultra-unique property is a must see to believe and appreciate. Profound possibilities and potential await with this work of art piece of landmarked real estate gold. Situated in the heart of prime Park Slope- surrounded by the most exciting and essential amenities of Brooklyn's most desirable & sought-after neighborhoods. An absolutely outstanding opportunity to own a once-in-a-lifetime historic home that will be become your legacy.
Some Photos are Staged.

Listing History for 860 Union Street

Now
06/09/2026
Contract Signed by Billy Apter
RE/MAX Real Estate Professionals
06/05/2026
Back on the Market by Billy Apter
RE/MAX Real Estate Professionals

Building Details for 860 Union Street

OwnershipMulti-Family
Building TypeHouse
AgePre-War
AccessWalk-up
Year Built1899
Floors/Apts2/2
Learn More About the Building

Transit and Citi Bike

Subway

Grand Army Plaza
0.19 miles
7 Av
0.25 miles

Citi Bike

Berkeley Pl & 7 Ave
0.13 miles
Grand Army Plaza & Plaza St West
0.16 miles

Contact Agents

Contact Agents

Licensed As
Billy E. Apter
Salesperson
License#:
40AP1037712
Company:
RE/MAX Real Estate Professionals
Billy Apter
RE/MAX Real Estate Professionals
Vito Angelo
RE/MAX Real Estate Professionals
View this property on the company's website

Park Slope | Brooklyn

Quick Profile

Boasting beautiful tree-lined streets, brownstones and a range of activities for all age groups, Park Slope is consistently ranked as one of New York’s most desirable neighborhoods. Filled with lush parks and greenery, the neighborhood is also known for its rare combination of excellent public schools, award-winning restaurants, nightlife, small independently owned businesses and community gardens.

Situated at the western slope of Prospect Park, the neighborhood is divided into different sections: North Slope, Center Slope and South Slope. Depending on who you ask, of course, the definitions of where these borders end and begin may vary (is the divide between North and Center deemed Union Street, Garfield Place, 1st Street or 3rd Street? The one between Center and South 6th Street, 9th Street, 11th Street or 15th Street?). 

Regardless of what part of the Slope you find yourself on, there’s no shortage of architectural beauty. From row houses to brownstones to mansions, the idyllic setting of the neighborhood is further enhanced by its Romanesque and Renaissance Revival styles. Case in point of this is also two of the area’s most well-known churches, Park Slope United Methodist Church and Saint Augustine Roman Catholic Church. 

Revered for its family-friendly appeal, Park Slope is often regarded as one of the best places to raise a family in New York City. That said, it doesn’t mean that parents don’t know how to have a good time... a slew of bars constantly opening in the neighborhood ranging from the high-end cocktail saloon to the dive (well, by Park Slope standards, anyway). 

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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.
OLR ID: 100726TH