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670 Union Street
New Development
Last updated on Mar 10, 2026

Timber House,
670 Union Street

Timber House is NYC's first mass timber condominium building, located in Park Slope and designed with Passive House principles. The building features 14 spacious residences with exposed timber beams, Scandinavian kitchens, and amenities including on-site parking with EV charging stations and a rooftop deck.

670 Union Street Location Map
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Overview of Timber House at 670 Union Street

Located at 670 Union Street, on a tree-lined side street in verdant Park Slope, Timber House is New York City’s first mass timber condominium building and the largest of its kind ever built in the city. Designed by MESH and developed by The Brooklyn Home Company, the building's columns, beams, and floors are made of structurally engineered glue-laminated timber, while the building's core is of reinforced concrete. The building abides by Passive House principles, specifying triple-glazed windows, highly-insulated walls, and solar photovoltaic panels on the roof.

Inside are 14 generously-sized condo residences that have been described as modern-day treehouses. With each spanning the full length of the structure, homes have 11-foot ceilings, expansive windows, and exposed timber beams with LED lights integrated directly into the wood. Scandinavian kitchens are airy and bright, with patterns and materials custom-made for the building. Fresh air is continually replenished, and half of the homes enjoy private outdoor space.

Timber House welcomes pets, and amenities include package storage, a bike room, on-site parking with electric vehicle charging stations at every space, and a landscaped, furnished roof deck with views of the Brooklyn and Manhattan skylines. The building is close to Prospect Park, Washington Park, Park Slope Playground, the Park Slope Food Co-op, 5th Avenue dining, and the Atlantic Avenue-Barclays Center transportation hub.

Doorman
None
Type
Condo
Year Built
2022
Apartments
Floors
6
Pets: Allowed
Neighborhood
Min Down
20%

Amenities

  • Resident Storage
  • Central AC
  • Full Service Garage
  • Mail Room
  • Rooftop Terrace
  • On-Site Parking
  • In-Unit Washer/Dryer
  • Bike Room
  • LEED Accreditation
  • Virtual Doorman
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  1. R
at 4th Ave 0.10 miles
  1. 2
  2. 3
at Flatbush Ave 0.45 miles
  1. B
  2. Q
at Flatbush Ave and Park Pl 0.48 miles

Sales Summary

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