Active
1 bed1,000 sqft
423 Atlantic Avenue, Unit 3J, Boerum Hill
Building Info: ExLax Building, 6 stories, Built 1900
Est: $8,298/moGet pre-approved
Co-opProperty Type
1900Year Built
$1,195/sq ftPrice per sq ft
$1,918/moMaintenance
Pets welcomePet policy
2.5% CompensationBuyer's Agent

Description

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
...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.

Listing Agent

  1. Marie-Claire Martineau

    Marie-Claire Martineau

    Listing Agent

    Compass

    P: (917) 848-6823

32 days on Market
Last updated: 09/22/2026 08:29 AM

Amenities

  • Roof Deck
  • Common Roof Deck
  • Columns
  • Hardwood Floors
  • High Ceilings
  • Oversized Windows
  • Soundproof Windows
  • Elevator

Open Houses

Saturday, Sep 26th12:30 PM - 1:30 PM
Appt OnlyView contact

Location

Add your commute

Payment Calculator

$8,298 per month

30 year fixed, 7.03% Interest

Principal and Interest

$6,380

Property Taxes

$0

Maintenance/Common Charges

$1,918

The Payment Calculator is for illustrative purposes only.

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Rocket Mortgage1

Property Information for 423 Atlantic Avenue, Unit 3J

Property Details
  • Min. Down Pymt: 20%
  • Total Rooms: 3.0
  • County: Kings County
  • Buyer's Agent Compensation: 2.5%
Building Information
  • Building/Complex: ExLax Building
  • Floor: 3
  • Stories: 6
  • Residences: 60
  • Pet Policy: Allowed
  • Year Built: 1900
  • Building Age: Pre-war
  • Building Type: Midrise

Property History for 423 Atlantic Avenue, Unit 3J

DateEvent & SourcePriceAppreciationLink
Sep 17, 2026

Price Change

Manual

$1,195,000——
Aug 24, 2026

Listed (Active)

Manual

$1,280,000——
Jun 15, 2026

Permanently Off Market

Manual

——
DateEvent & SourcePrice
09/17/2026

Price Change

Manual

$1,195,000
08/24/2026

Listed (Active)

Manual

$1,280,000
06/15/2026

Permanently Off Market

Manual

—

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

Public Records for 423 Atlantic Avenue, Unit 3J

Taxable ValueLand-Additions-Total-
Home Facts
APN3001780054

Schools near 423 Atlantic Avenue, Unit 3J

This home is within New York City Geographic District #15.
Rating
School
Type
Grades
Distance
Public - PK to 5
Public - 6 to 8
Public - 9 to 12
Public - 9 to 12
Rating
School
Distance
P.S. 38 The Pacific
PublicPK to 5

Khalil Gibran International Academy
Public9 to 12

Brooklyn High School of the Arts
Public9 to 12

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.

Boerum Hill
Boerum Hill
Historic Brooklyn mixed with modern influences. Boerum Hill offers a balanced approach to Brooklyn living by combining a downtown feel with a homespun, intimate atmosphere. Similar to its sister neighborhoods Cobble Hill and Carroll Gardens, Boerum Hill is an instant favorite of long-time New...

Neighborhood Map and Transit

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423 Atlantic Avenue, Unit 3J is a co-op for sale in Boerum Hill. This property was listed for sale on August 24, 2026 by Compass, it's currently listed at $1,195,000. It has been on the market for a total of 32 days and was last sold on August 9, 2021. This listing's school district is New York City Geographic District #15. Nearby schools include P.S. 38 The Pacific, The Math And Science Exploratory School and Khalil Gibran International Academy. 423 Atlantic Avenue, Unit 3J is a 1-bed, 1-bath, 1,000 sqft co-op built in 1900.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of any information, descriptions or measurements (including square footage measurements and property condition), such should be independently verified through appropriate means, including, but not limited to, in person inspection and public records, and Compass International Holdings, its subsidiaries, affiliates and independently owned and operated franchisees, and their affiliated agents and associated third parties expressly disclaim 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 seller's discretion. 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. ©2026 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 2026, OneKey® MLS. All data is deemed reliable but is not guaranteed accurate by Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties. 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. ©2026 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.©2026 The Real Estate Board of New York, Inc., All rights reserved.