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423 Atlantic Avenue 3JBrooklyn, NY 11217

For Sale

$1,280,000

Welcome to your new home at 423 Atlantic Ave, Brooklyn, NY, a stunning co-op residence that perfectly blends classic architectural charm with modern conveniences. This spacious 1000 square foot midrise apartment offers a serene retreat in the heart of the city.

As you enter, you'll be captivated by the high ceilings ( 12 FEET) and elegant columns that add a touch of sophistication to the space. The southern exposure floods the apartment with natural light, highlighting the beautiful hardwood floors throughout. The oversized, soundproof windows ensure a peaceful living environment, allowing you to enjoy the vibrant city views without the noise. Currently, it is configured as a large open loft but it can easily be converted to a 1 bedroom plus a den/office. ( see alternate floorplan)

The well-appointed eat-in kitchen is a chef's delight, featuring a gas oven, dishwasher, and ample space for dining. The renovated bathroom offers a modern touch with stylish fixtures and finishes. The bedroom boasts a custom closet, providing ample storage for your wardrobe.

Residents of this building enjoy a range of amenities, including a common roof deck perfect for relaxing or entertaining. The convenience of an elevator, in-unit washer/dryer, and additional laundry facilities in the building add to the ease of living. For those with vehicles, assigned parking and garage options are available.

Security is a priority with a video intercom system, ensuring peace of mind. This co-op is a rare find, offering a harmonious blend of comfort, style, and convenience in one of Brooklyn's most sought-after neighborhoods. Don't miss the opportunity to make this exceptional property your new home.

Listed by Marie Claire Martineau

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Compass

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(917) 848-6823

Last updated September 13, 2026

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Source: REBNY #RLS20112812

RLS Data display by Prevu Real Estate LLC

Listing Facts

  • TypeCo-op
  • NeighborhoodBoerum Hill
  • Bedrooms1
  • Bathrooms1
  • Days on Prevu22
  • HOA/Maint. Fees$1,918.07/month
  • Size1,000 sqft
  • Price per sqft$1,280

Amenities

  • Dishwasher
  • Washer/Dryer
  • Pets Allowed
  • Parking

Location

Mortgage Calculator

Listing History

08/24/2026
Listed by Compass
$1,280,000
  1. 08/24/2026$1,280,000
    Listed by Compass

Estimated Closing Costs

Attorney Fees
$4,000
NYC Mansion Tax
$12,800
Bank Attorney
$1,500
Other Closing Costs
$4,000
Total
$22,300

Estimated closing costs are based on the list price of $1,280,000 and a 20% 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 423 Atlantic Avenue 3J

Association

Amenities

  • Pets Allowed: Building Yes

Fees

  • Association Fee: $1,918.07 Monthly

Financial

  • Flip Tax: 2.0%
  • Flip Tax Remarks: 2%

Exterior

Construction

  • Number Of Units Total: 60
  • Stories Total: 6
  • Structure Type: Multi Family
  • Year Built: 1900
  • Building Name: Ex Lax Building
  • Entry Level: 3

Features

  • Building Features: Elevator(s)

Measurements

  • Lot Size Area: 29,812
  • Lot Size Dimensions: 331
  • Lot Size Units: SquareFeet

Financial

Taxes

  • Parcel Number: 00178-0054-00423-000-000003J

Interior

Features

  • Appliances: Dryer, Dishwasher, Gas Oven, Washer
  • Flooring: Hardwood
  • Interior Features: High Ceilings

Measurements

  • Living Area: 1,000
  • Living Area Units: SquareFeet

Rooms

  • Bathrooms Full: 1
  • Bathrooms Total Integer: 1
  • Bedrooms Total: 1
  • Rooms Total: 3

Other

Location

  • City Region: Brooklyn
  • Subdivision Name: Boerum Hill
  • Tax Block: 00178
  • Tax Lot: 0054

Parking

Parking

  • Parking Features: Assigned, Garage

Utilities

Equipment

  • Laundry Features: Common Area

Frequently Asked Questions

How many bedrooms and bathrooms does this co-op have?

There is 1 bedroom and 1 bathroom in this co-op at 423 Atlantic Avenue 3J.

Are pets allowed at 423 Atlantic Avenue?

Yes, 423 Atlantic Avenue allows pets. Check the Property Details for any relevant restrictions.

How does 423 Atlantic Avenue 3J compare to other co-ops in Boerum Hill?

This co-op is listed 11% above the average price for co-ops in Boerum Hill and has been on the market for 37 less days than the typical home in this area.

What building or home owners association is the co-op part of?

This co-op is in the Ex Lax Building building.

What is the square footage on this co-op?

According to the MLS, this listing is 1,000 sqft.

423 Atlantic Avenue 3J is a 1-bedroom, 1-bath co-op for sale in Brooklyn NY 11217. Available on Prevu for 22 days at $1,280,000. This home features 1,000 square feet of living space, located in Boerum Hill. The median listing price for co-ops in this area is $3,475,000. The home offers dishwasher, pets allowed, parking, and washer/dryer. View other co-op listings in Brooklyn.

RLS Data display by Prevu Real Estate LLC The Registrant acknowledges each other RLS Broker's ownership of, and the validity of their respective copyright in, the Exclusive Listings that are transmitted over the RLS. The information is being provided by RLS at REBNY Listing Service, Inc. Information deemed reliable but not guaranteed. Information is provided for consumers' personal, non-commercial use, and may not be used for any purpose other than the identification of potential properties for purchase. 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 RLS at REBNY Listing Service, Inc. All rights reserved. Based on information from the 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. 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.