Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $3,850,000

· Sold at asking price · Closed April 17, 2026

SOLD: 670 Union Street #4A
SOLD $3,850,000
Sold Condo

$3,850,000

$1,886 per sq ft

670 Union Street #4A

Park Slope, Brooklyn

Timber House

MLS® #RLS20065084

RLS at REBNY

Listing by Compass

3

Bedrooms

4.5

Baths

2,041

Sq. Ft.

2022

Year Built

Sale Details

Sale Price $3,850,000
Original List Price $3,850,000
Close Date April 17, 2026
vs. Asking Sold at asking price

Property Summary

Bedrooms 3
Bathrooms 4 full, 1 half
Living Area 2,041 sq ft
Year Built 2022
Ownership Condo
Common Charges $945/mo
Property Taxes $25,680/yr
Neighborhood Park Slope
Floor 4 of 6

Description

Timber House introduces a new standard for Brooklyn condominium living, where sustainability, design, and comfort intersect. Crafted using cutting-edge timber construction and thoughtfully layered natural materials, this newly completed three-bedroom, three-and-a-half-bath home offers a modern retreat with an elevated, architectural presence. With 2,041 square feet of interior space, the home is defined by soaring nearly 11-foot ceilings, exposed beams, and wide-plank engineered pine floors by Roots Custom. The open living area is both expansive and adaptable, easily accommodating formal dining, relaxed entertaining, and work-from-home needs. At its center, a refined European kitchen pairs custom cabinetry and porcelain countertops with hexagonal tile flooring by Prospect NY, a walk-in pantry, and a curated suite of Bosch and Gaggenau appliances, including an induction cooktop. The primary suite is a private sanctuary featuring a generous walk-in closet and a spa-inspired Carrara marble bath with a Duravit soaking tub, oversized walk-in shower with linear drain, Restoration Hardware medicine cabinets, and a custom floating vanity finished with Brizo brushed gold fixtures. Two additional bedroom suites each include their own bathrooms, one enhanced by a Juliet balcony and walk-in closet. A powder room, in-unit Miele washer-dryer, and integrated smart home technology—including Lutron lighting, Latch entry, Nest safety systems, and high-speed connectivity—complete the residence. A private storage unit and dedicated on-site parking space with EV charging are included in the purchase price, offering rare convenience in this sought-after neighborhood. Timber House’s striking Danish brick exterior conceals an advanced glue-laminated timber structural system that minimizes environmental impact while maximizing strength and warmth. Energy-conscious features such as triple-glazed Passive House-quality windows, solar panels, multi-zone heat pump heating and cooling, energy-recovery ventilation, and mineral wool insulation create a quiet, efficient, and comfortable living environment. Residents enjoy a modern lobby with secure package storage, bike storage, private storage for each residence, and a beautifully landscaped, furnished roof deck with panoramic views stretching across Brooklyn and Manhattan. Timber House offers a rare opportunity to own a design-driven, environmentally responsible home in one of Brooklyn’s most dynamic and desirable settings.

Property Details

Type Condo
Ownership Condominium
Total Rooms 6
Heating Central
Cooling Central Air
Year Built 2022
Living Area 2,041 sq ft
Flooring Hardwood, Tile

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RLS at REBNY

Listing courtesy of Roland J Augustine at Compass. 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. This 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.

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