Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

Sold on 1/8/2026 for $2,425,000

Closed For Sale Condo

$2,425,000

$1,738 per sq ft

670 Union Street #3A

Park Slope, Brooklyn

MLS® #RLS20047838

RLS at REBNY

Listing by Compass

2

Bedrooms

2

Baths

1,395

Sq. Ft.

2022

Year Built

Quick Summary

Bedrooms 2
Bathrooms 2
Living Area 1,395 sq ft
Year Built 2022
Ownership Condo
HOA/Common Charges $523/mo
Property Taxes $17,076/yr
Parking Garage
Neighborhood Park Slope
Floor 3 of 6

Property Highlights

  • Exposure: North,South facing
  • Climate Control: Central Air
  • Parking: Private garage

Property Details

Type Condo
Ownership Condominium
Total Rooms 4
Baths 2 Full
Floor 3 of 6
Exposure North,South
Heating Central
Cooling Central Air
Pets Yes, CatsOk, DogsOk
Year Built 2022
Living Area 1,395 sq ft
Parking Garage Available
Parking Features Garage, On Site
Structure Type HighRise
Flooring Hardwood, Tile
Furnished Unfurnished
Parcel # 00955-1205
Block/Lot 00955/1205

Description

Presenting the first resale opportunity at Timber House, the groundbreaking Park Slope condominium from the celebrated Brooklyn Home Company. Residence 3A is a meticulously designed 1,395-square-foot, two-bedroom, two-bathroom home that represents a new paradigm for sustainable luxury living in New York City. Upon entering, you are greeted by an expansive great room designed for both sophisticated entertaining and tranquil daily life, with soaring ceilings and wide-plank white oak floors creating an atmosphere of airy refinement. Every window is triple-glazed and Passive House-quality, blocking outside noise. The open-plan chef's kitchen is a model of functional elegance, featuring custom, hand-painted cabinetry, integrated Bosch and Liebherr appliances, and a stunning honed marble countertop and backsplash that seamlessly blend form and function. The primary suite serves as a serene private retreat, generously proportioned and complete with a spacious walk-in closet. The en-suite bathroom is a sanctuary of its own, finished with bespoke mosaic tiles, a custom vanity, and a glass-enclosed walk-in shower. The second bedroom is equally well-appointed, offering flexibility as a guest room, nursery, or spacious home office, and is situated adjacent to a beautifully detailed second full bathroom. Timber House is a landmark in sustainable architecture. As one of the city’s first mass-timber buildings, its construction from cross-laminated timber offers superior thermal and acoustic performance, promoting a sense of wellness and quietude rarely found in urban construction. This Passive House-inspired design results in significantly lower energy consumption and a healthier living environment. With only 14 residences, the building offers a distinct boutique and private feel. Residents enjoy access to a beautifully landscaped common roof deck with panoramic views of the Brooklyn and Manhattan skylines. This sale includes a private storage unit. For added convenience, a deeded parking space equipped with an electric vehicle charger is also available for separate purchase—a truly rare asset in Park Slope. Located at the nexus of Park Slope and Gowanus, 670 Union Street offers unparalleled access to the neighborhood's rich cultural and culinary landscape. You are moments from Prospect Park, the weekend Farmer's Market, the boutiques and restaurants of 5th and 7th Avenues, and multiple transportation lines, ensuring a seamless commute. This is more than a residence; it is an investment in forward-thinking design, environmental responsibility, and an elevated Brooklyn lifestyle.

Features & Amenities

Interior Features

Breakfast Bar Double Vanity High Ceilings Soaking Tub Walk In Closets In Unit See Remarks Flooring: Hardwood, Tile Double Pane Windows

Building Amenities

Elevators

Appliances

Cooktop Dryer Dishwasher Electric Cooktop Electric Oven Refrigerator Range Hood Stainless Steel Appliances Washer

Building Information

Total Units 14
Stories 6
Structure HighRise

Financial Details

Common Charges $523/mo
RE Taxes $17,076/yr ($1,423/mo)
Original Price $2,300,000
Sale Price $2,425,000
Previous Price $2,300,000

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

64

Median Asking Price

$2.13M

Median $/Sqft

$1,388

Avg Days on Market

N/A

New This Week

2

Price Reduced

19%

Sold (30 Days)

23

Median Sale Price

$1.68M

Live data from RLS at REBNY • Updated 2/18/26, 2:23 PM EST

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Location

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670 Union Street #3A, Park Slope, Kings County

Virtual Tour

MLS® ID: RLS20047838
First Listed: 9/11/2025
On Market: 9/11/2025
Price Changed: 1/13/2026
Closed: 1/8/2026
Contract Date: 9/8/2025

Listing Courtesy of Compass - Paul J Hyun

Listing Contact: (718) 690-0297

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.

RLS at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 2/18/2026 at 7:23 PM UTC

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