Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
676 Union Street
Interested in this property?
Active For Sale Multi Family

$6,850,000

$1,054 per sq ft

676 Union Street

Park Slope, Brooklyn

MLS® #RLS20048521

RLS at REBNY

Listing by Corcoran Group

6

Bedrooms

4.5

Baths

6,500

Sq. Ft.

1920

Year Built

Quick Summary

Bedrooms 6
Bathrooms 5 full, 1 half
Living Area 6,500 sq ft
Lot Size 2,000 sq ft
Year Built 1920
Ownership None
Property Taxes $14,004/yr
Neighborhood Park Slope
Floor 1 of 5

Property Highlights

  • Views: City, Garden
  • Exposure: North,South facing
  • Fireplace: 1 fireplace

Property Details

Type Multi Family
Ownership None
Total Rooms 12
Baths 4 Full, 1 Half
Floor 1 of 5
View City, Garden
Exposure North,South
Cooling Wall Units
Pets Yes
Year Built 1920
Living Area 6,500 sq ft
Structure Type Townhouse
Flooring Hardwood
Furnished Unfurnished
Lot Size 2,000 sq ft
Parcel # 00955-0037
Block/Lot 00955/0037

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

High Ceilings Smoke Free In Unit See Remarks Flooring: Hardwood Fireplace (1)

Exterior Features

Private Outdoor Space Over60 Sqft

Building Amenities

Green Building

Building Information

Building Data View Compliance & Permits
Total Units 2
Stories 5
Structure Townhouse

Financial Details

RE Taxes $14,004/yr ($1,167/mo)
Original Price $7,250,000
Previous Price $7,250,000

Park 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 Neighborhood

Active 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

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676 Union Street, Park Slope, Kings County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1920
Year Built
106 years old
5
Floors
2
Residential Units
R6A
Zoning District
Primarily Residential Mixed Use

Tax & Assessment

Assessed Value: $422,280
Land Value: $27,300
Exemptions: $0

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 2,000 SF
Building Area: 6,500 SF
Built FAR: 3.25
Allowed FAR: 3

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

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) 416-7433
MLS® ID: RLS20048521
First Listed: 9/15/2025
On Market: 9/15/2025
Price Changed: 2/10/2026
Contract Date: 9/15/2025

Listing 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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 7/21/2026 at 5:03 AM UTC

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