SOLD FOR $3,700,000
Listed at $3,850,000 · Sold 3.9% below asking · Closed January 24, 2020
$3,850,000
865 Union Street #0
MLS® #RLS10584872
Listing by The Corcoran Group
6
Bedrooms
3.5
Baths
N/A
Sq. Ft.
1884
Year Built
Quick Summary
Property Highlights
- Style: Prewar architecture
- Climate Control: Central Air
- Character: Pre-war building (1884)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Apr 22, 2019 | $4,495,000 | - |
| Currently | Apr 27, 2026 | $3,850,000 | -14.3% |
Description
865 Union Street Adorning one of the most picturesque blocks in Park Slope, 865 Union Street exemplifies the artistic heritage and cultural fabric of this fabled neighborhood. This legal 2 unit residence currently used as a 1 family home was recently renovated with beautiful modern finishes, while retaining its original character with museum quality turn-of-the-century detail. Historically significant, this light and airy 20' wide neo-Grec brownstone was built over 1884-85 by Park Slope builder-architect John Magilligan. Built 4 stories and full-height with its gorgeous bay window accenting the front of the building. Exquisite mahogany wood, oversized Pier mirrors, original in-laid flooring throughout and fantastic banisters complete with original finials surround you from the moment you enter the front doors. With three rare exposures; the restored & original stained glass windows on the west side of the building bathe the middle of the home in dreamy light. The beautifully appointed kitchen, traditionally featured on the garden level, is completed by ebony floors, white custom cabinetry & millwork, creamy quartz countertops completed by a glass backsplash. The windowed master bath with original stained glass was custom designed and is spa-like in every way. Basket-weave marble flooring, an oversized soaking tub, double sinks with marble top and separate stall shower with glass enclosure and nickel fixtures throughout are luxurious and in keeping with the period of the house. Many modern conveniences have been seamlessly added to this home, such as two full sized washer/dryers (one on the lower level and one on the 3rd floor), a wet bar, the master en suite, the chefs kitchen as well as the custom built master walk-in closet. The professionally landscaped garden and deck off the formal dining room is lush and private. This tranquil setting is simply perfect for any size gathering or a simple family meal al fresco. 865 Union Street is a home for all seasons. Historic luxury in the heart of the North Slope.
Features & Amenities
Interior Features
Exterior Features
Appliances
Building Information
About Park Slope
View All Park Slope ListingsPark Slope is a well-known Brooklyn neighborhood, recognized for its tree-lined streets and preserved brownstones. Bordering the western edge of Prospect Park, the neighborhood offers convenient access to green space. The real estate market features a mix of historic townhouses, cooperatives, and modern condominiums, within walking distance of the park.
Park Slope Live Market Data
View NeighborhoodActive Listings
110
Median Asking Price
$1.70M
Median $/Sqft
$1,376
Avg Days on Market
N/A
New This Week
14
Price Reduced
16%
Sold (30 Days)
20
Median Sale Price
$1.66M
Live data from RLS at REBNY • Updated 4/27/26, 12:54 AM EST
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Location
865 Union Street #0, Park Slope, Kings County • Near 7th Avenue & 8th Avenue
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)
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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
This property has 6 bedrooms and 3 full bathrooms and 1 half bathroom.
According to MLS records, the building was constructed in 1884, making it approximately 142 years old.
Pet policy requires confirmation with the listing broker.
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 The Corcoran Group - Jessica Buchman
Listing Contact: (917) 579-8641
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 4/27/2026 at 4:54 AM UTC