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670 Union Street 4ABrooklyn, NY 11215

For Sale

$3,850,000

Smart Buyer Rebate $48,125

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.

Listed by Roland J Augustine

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Compass

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(917) 846-6297

Listed by Emma Teitgen

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Compass

Last updated January 21, 2026

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Source: REBNY #RLS20065084

Listing Facts

  • TypeCondo
  • NeighborhoodNorth Slope
  • Bedrooms3
  • Bathrooms3.5
  • Days on Prevu25
  • HOA/Maint. Fees$945/month
  • Taxes$25,680/year
  • Size2,041 sqft
  • Price per sqft$1,886

Amenities

  • Dishwasher
  • Private Outdoor Space
  • Washer/Dryer
  • Pets Allowed
  • Parking

Location

Mortgage Calculator

Listing History

01/05/2026
Listed by Compass
$3,850,000

Estimated Closing Costs

Total
$151,276
Attorney Fees
$4,000
NYC Mansion Tax
$57,750
Title Insurance
$17,325
Bank Attorney
$1,500
Mortgage Recording Tax
$66,701
Other Closing Costs
$4,000

Estimated closing costs are based on the list price of $3,850,000 and a 10% downpayment. These estimates are for indicative purposes only. Actual closing costs may vary for each transaction. See the Closing Costs Calculator for calculations specific to your situation.

Property Details for 670 Union Street 4A

Association

Amenities

  • Pets Allowed: Building Yes

Fees

  • Association Fee: $945.00 Monthly

Exterior

Construction

  • Number Of Units Total: 14
  • Stories Total: 6
  • Structure Type: Duplex
  • Year Built: 2022
  • Entry Level: 4

Features

  • Building Features: Elevator(s)
  • Patio And Porch Features: Deck, Balcony

Measurements

  • Lot Size Dimensions: 16
  • Lot Size Units: SquareFeet

Financial

Taxes

  • Parcel Number: 00955-1208
  • Tax Annual Amount: $25,680.00

Interior

Features

  • Appliances: Cooktop, Dryer, Dishwasher, Washer
  • Flooring: Hardwood, Tile
  • Interior Features: Entrance Foyer, High Ceilings, Pantry, Soaking Tub, Walk-In Closet(s)

Measurements

  • Living Area: 2,041
  • Living Area Units: SquareFeet

Rooms

  • Bathrooms Full: 3
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 4
  • Bedrooms Total: 3
  • Rooms Total: 6

Other

Location

  • City Region: Brooklyn
  • Subdivision Name: Park Slope
  • Tax Block: 00955
  • Tax Lot: 0033

Parking

Parking

  • Garage: Yes
  • Parking Features: Garage, On Site

Utilities

Equipment

  • Cooling: Central Air
  • Has Cooling: Yes
  • Heating: Central
  • Has Heating: Yes
  • Laundry Features: In Unit, See Remarks

Frequently Asked Questions

How many bedrooms and bathrooms does this condo have?

There are 3 bedrooms and 3.5 bathrooms in this condo at 670 Union Street 4A.

Are pets allowed at 670 Union Street?

Yes, 670 Union Street allows pets. Check the Property Details for any relevant restrictions.

What are the annual taxes for 670 Union Street 4A?

Annual taxes for this condo are estimated at $25,680.

How does 670 Union Street 4A compare to other condos in North Slope?

This condo is listed 70% above the average price for condos in North Slope and has been on the market for 79 less days than the typical home in this area.

What is the square footage on this condo?

According to the MLS, this listing is 2,041 sqft.

670 Union Street 4A is a 3-bedroom, 3.5-bath condo for sale in Brooklyn NY 11215. On Prevu for 25 days at $3,850,000. This residence features 2,041 square feet of living space, located in North Slope. The median listing price for condos in this area is $1,775,000. The home offers private outdoor space, dishwasher, pets allowed, parking, and washer/dryer. Explore more condo listings in Brooklyn.

Based on information from Real Estate Board of New York and/or other sources. 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.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.