670 Union Street, Unit 3A

Timber House
Park Slope

$2,300,000
Price
2
Beds
1,395 Sq. Ft.
$1,649 / Sq. Ft.
1,395
Sq. Ft.
$1,649
per Sq. Ft.
Listed By CompassContract Signed
Listed By CompassContract Signed
a living room with furniture a window and a potted plant
a living room with furniture and a large window
a living room with furniture and a large window
a living room with a flat screen tv and a large window
a kitchen with stainless steel appliances kitchen island granite countertop a sink and cabinets
a bedroom with bed couch and window
a bedroom with a bed and a dresser with mirror
a living room with furniture and a window
a bedroom with a bed and a chair
a kitchen with a sink and a window
a bathroom with a tub a sink and a shower
a view of a rooftop deck with chairs and wooden floor
a car parked in front of a building
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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...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. This condo is pet friendly.

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.

Listing Agents

  1. Paul Hyun

    Paul Hyun

    Listing Agent

    Compass

    paul.hyun@compass.com

    P: (718)-690-0297

    CallTextEmail
  2. Ian Mednick

    Ian Mednick

    Alternative Listing Agent

    Compass

    ian.mednick@compass.com

    P: (203)-858-5789

    CallTextEmail
  3. Daniella Guetta

    Daniella Guetta

    Alternative Listing Agent

    Compass

    CallTextEmail

Amenities

  • Primary Ensuite
  • Common Roof Deck
  • Columns
  • Hardwood Floors
  • High Ceilings
  • Oversized Windows
  • Soundproof Windows
  • Elevator
LISTING UPDATED: 11/18/2025 10:17 AM

Property Details for 670 Union Street, Unit 3A

StatusContract Signed
Days on Market68
Taxes$1,424 / month
Common Charges$524 / month
Min. Down Pymt5%
Total Rooms4.0
Compass TypeCondo
MLS TypeCondo
Year Built2022
CountyKings County
Buyer's Agent Compensation2.5%
Compensation Remarks2.5% to the buyers' agent

Building

Timber House

14 Units6 StoriesBuilt in 2022

Location

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Building Information for 670 Union Street, Unit 3A

Building/ComplexTimber HouseFloor3Stories6Residences14Pet PolicyAllowedPet Policy Details-Year Built2022Building AgeNew Development

Payment Calculator

$15,444 per month

30 year fixed, 6.28% Interest

Principal and Interest

$13,496

Property Taxes

$1,424

Maintenance/Common Charges

$524

The Payment Calculator is for illustrative purposes only.

Property History for 670 Union Street, Unit 3A

DateEvent & SourcePriceAppreciationLink
Nov 18, 2025

Contract Signed

Manual

——
Sep 11, 2025

Listed (Active)

Manual

$2,300,000——
Nov 17, 2022

Sold

RLS RESO #RLS10809226

$2,135,000—
Nov 17, 2022

Sold (Public Record)

ACRIS #2022120200657001

$2,173,964—
May 19, 2022

Contract Signed

RLS RESO #RLS10809226

—
May 5, 2022

Listed (Active)

RLS RESO #RLS10809226

$1,995,000—
DateEvent & SourcePrice
11/18/2025

Contract Signed

Manual

—
09/11/2025

Listed (Active)

Manual

$2,300,000
11/17/2022

Sold

RLS RESO #RLS10809226

$2,135,000
11/17/2022

Sold (Public Record)

ACRIS #2022120200657001

$2,173,964
05/19/2022

Contract Signed

RLS RESO #RLS10809226

—
05/05/2022

Listed (Active)

RLS RESO #RLS10809226

$1,995,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 670 Union Street, Unit 3A

Taxable ValueLand$16,808Additions$162,736Total$179,544
Tax Record2025$20,904 ($1,742 / month) Tax Class2Tax Rate12.5%
Home Facts
Total Finished SqFt1,395 SqFtLot Size6,668 SqFtYear Built0ZoningR6AAPN3009551205

Schools near 670 Union Street, Unit 3A

This home is within New York City Geographic District #13.
Rating
School
Type
Grades
Distance
P.S. 282 Park Slope
Public - PK to 5
Ms 266 Park Place Community Middle School
Public - 6 to 8
Brooklyn Technical High School
Public - 9 to 12
P.S. 133 William A Butler
Public - PK to 5
Rating
School
Distance
P.S. 282 Park Slope
PublicPK to 5

Ms 266 Park Place Community Middle School
Public6 to 8

Brooklyn Technical High School
Public9 to 12

P.S. 133 William A Butler
PublicPK to 5

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2025 The Real Estate Board of New York, Inc., All rights reserved. The source of the displayed data is either the property owner or public record provided by non-governmental third parties. It is believed to be reliable but not guaranteed. This information is provided exclusively for consumers’ personal, non-commercial use. The data relating to real estate for sale on this website comes in part from the IDX Program of OneKey® MLS. Information Copyright 2025, OneKey® MLS. All data is deemed reliable but is not guaranteed accurate by Compass. See Terms of Service for additional restrictions. Compass · Tel: 212-913-9058 · New York, NY 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. ©2025 The Real Estate Board of New York, Inc., all rights reserved. This information is not guaranteed, should be independently verified and may not reflect all real estate activity in the market. Offers of compensation set forth here are for other RLSParticipants only and may not reflect other agreements between a consumer and their broker.©2025 The Real Estate Board of New York, Inc., All rights reserved.