676 Union Street
MLS® #RLS20048521
Listing by Corcoran Group
6
Bedrooms
4.5
Baths
6,500
Sq. Ft.
1920
Year Built
Quick Summary
Property Highlights
- Views: City, Garden
- Exposure: North,South facing
- Fireplace: 1 fireplace
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 15, 2025 | $7,250,000 | - |
| Currently | Jul 21, 2026 | $6,850,000 | -5.5% |
Description
Renovated Loft Building in Prime Park Slope. A truly rare offering, 676 Union Street is a 25-foot-wide loft building in the heart of prime Park Slope, encompassing approximately 6,500 square feet of beautifully renovated space. Combining the scale and openness of a downtown loft with the warmth and character of classic Brownstone Brooklyn, this exceptional property presents a unique opportunity in one of the borough's most coveted neighborhoods. Currently configured as two expansive duplex residences and a dedicated gallery/studio, the building offers six bedrooms and five-and-a-half bathrooms, providing remarkable flexibility for end users, investors, or those seeking an exceptional live/work environment. Each duplex is distinguished by soaring ceilings, oversized windows, wood-burning fireplaces, and abundant natural light. The building has been thoughtfully restored from the brick out, blending its authentic loft character with modern infrastructure, high-quality finishes, and long-term durability. Custom wood staircases connect each level, creating a seamless sense of flow while emphasizing the home's impressive scale and volume. The upper floors enjoy expansive skyline views, enhanced by generous ceiling heights and skylights that bathe the interiors in natural light throughout the day. Above, a private rooftop terrace offers a spectacular outdoor retreat with sweeping city vistas, ideal for entertaining or quiet relaxation. At the garden level, a serene south-facing courtyard inspired by Mediterranean design features stone-tiled flooring and lush outdoor living space rarely found in this part of Brooklyn. The ground-floor gallery and studio, complete with a private entrance, kitchenette, and powder room, provides exceptional versatility as a creative workspace, home office, showroom, or studio. Its independent access allows it to function separately from the residential spaces while remaining fully integrated into the property. Perfectly situated on Union Street, the building is moments from Park Slope's acclaimed restaurants, boutiques, cafés, parks, and transportation, offering convenient access throughout Brooklyn and Manhattan. Its exceptional width, generous scale, and adaptable layout present a rare opportunity to create an extraordinary single-family residence, maintain two expansive duplex homes, or explore a condominium conversion, subject to all required approvals. Offering an exceptional combination of size, light, architectural character, skyline views, and flexible living, 676 Union Street is a one-of-a-kind property in one of Brooklyn's most established and sought-after neighborhoods. All prospective purchasers are encouraged to independently verify square footage, dimensions, permitted uses, and all other information to ensure the property meets their individual requirements and complies with applicable regulations..
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Building Information
Financial Details
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
87
Median Asking Price
$1.90M
Median $/Sqft
$1,473
Avg Days on Market
N/A
New This Week
2
Price Reduced
24%
Sold (30 Days)
45
Median Sale Price
$2.00M
Live data from RLS at REBNY • Updated 7/21/26, 1:03 AM EST
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Location
676 Union Street, Park Slope, Kings County
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 annual property tax is $14,004, or roughly $1,167 per month. Verify the current assessment with your attorney before closing.
This property has 6 bedrooms and 4 full bathrooms and 1 half bathroom.
The listed interior living area is 6,500 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1920, making it approximately 106 years old.
This listing is None
Pet policy requires confirmation with the listing broker. Additional notes: UnitNo
At the current list price of $6,850,000 for 6,500 sq ft, the asking price per square foot is approximately $1,054. 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 [email protected]. 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 Corcoran Group - Catherine E Witherwax
Listing Contact: 917.816.0019
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 7/21/2026 at 5:03 AM UTC