Onyx Square
2128 Ocean Ave, Brooklyn, NY 11229
Apartment building
Studio-3 beds
In-unit laundry (W/D)
Available units
This building may have units for rent or for sale. Select a unit to contact.

$420,000
Studio, 1 ba
436 sqft
For sale - Unit 4D
Listing by: New York City Moves Team LLC

$480,000
1 bd, 1 ba
506 sqft
For sale - Unit 5J
Listing by: Coldwell Banker Reliable Real Estate
What's special
Refined 1-Bedroom at Onyx Square | South Brooklyn's Full-Service Standout
At Onyx Square, thoughtful design meets everyday functionality in a full-service condo building that stands apart in South Brooklyn. Apartment 3A is a highly efficient one-bedroom, one-bathroom residence offering modern finishes, a functional layout, and access to some of the most comprehensive amenities in the area.
The apartment features durable, multi-layer engineered oak flooring that grounds the space in warmth and natural tone. The open-concept kitchen is anchored by striking Calacatta Caesarstone countertops, a textured hexagonal backsplash, and custom-built cabinetry that provides a refined architectural feel. High-end Bosch stainless steel appliances bring both design integrity and professional-level performance. Whether you're prepping weekday dinners or entertaining with ease, this kitchen delivers quiet luxury and everyday functionality in equal measure.
The bathroom offers a spa-like retreat, with sleek contemporary fixtures, a floating vanity, and radiant heated floors that add a layer of comfort not often found at this price point. The space is serene and well-considered, with a design language that reflects both simplicity and sophistication.
The unit also includes a full-size, in-unit washer and dryerstackable and discreetly integrated to support seamless living without compromise.
Building amenities at 2128 Ocean Avenue go well beyond the neighborhood norm. Onyx Square includes six total shared amenity spacesfour indoor and two outdoorcurated to provide residents with flexibility, comfort, and lifestyle support. Features include a modern, attended lobby with a part-time doorman and relaxed seating area; a state-of-the-art fitness center; a tranquil yoga and meditation studio; a resident lounge and entertainment room; and a children's playroom. Outdoors, residents can enjoy a landscaped central courtyard as well as an additional rooftop-style terrace outfitted with greenery, lounge furniture, and grilling stationsideal for hosting, unwinding, or simply catching the light at golden hour.
Located at 2128 Ocean Avenue, Onyx Square is positioned at the intersection of Midwood, Madison, and Sheepshead Bay. The B and Q express trains are just moments away, providing quick access in either directionto Prospect Park and Park Slope or the iconic boardwalk at Coney Island. With new energy infusing the surrounding area and legacy neighborhood charm still intact, this location offers a rare balance of vibrancy and calm.
Facts, features & policies
Unit features
Appliances
- Dishwasher
- Dryer
- Washer
Flooring
- Hardwood
Neighborhood: Sheepshead Bay
Areas of interest
Use our interactive map to explore the neighborhood and see how it matches your interests.
Travel times
Nearby schools in Brooklyn
GreatSchools rating
- 6/10Ps 255 Barbara Reing SchoolGrades: K-5Distance: 0.4 mi
- 7/10Jhs 234 Arthur W CunninghamGrades: 6-8Distance: 0.4 mi
- 5/10James Madison High SchoolGrades: 9-12Distance: 0.4 mi
Market Trends
Rental market summary
The average rent for all beds and all property types in Brooklyn, NY is $3,795.
Average rent
$3,795
Month-over-month
+$62
Year-over-year
+$152
Available rentals
17,820
Frequently asked questions
What is the walk score of Onyx Square?
Onyx Square has a walk score of 95, it's a walker's paradise.
What schools are assigned to Onyx Square?
The schools assigned to Onyx Square include Ps 255 Barbara Reing School, Jhs 234 Arthur W Cunningham, and James Madison High School.
Does Onyx Square have in-unit laundry?
Yes, Onyx Square has in-unit laundry for some or all of the units.
What neighborhood is Onyx Square in?
Onyx Square is in the Sheepshead Bay neighborhood in Brooklyn, NY.