Onyx Chelsea at 261 West 28th Street

Get Insider Info Onyx Chelsea at
261 West 28th Street

Become a New York City real estate insider and get access to the latest listings, photos, floorplans and recent sales at Onyx Chelsea.

Data trusted by

New York Times logo Financial Times logo The Wall Street Journal logo Forbes logo CNN logo Fortune logo New York Post logo USA Today logo The Real Deal logo Crains logo Reuters logo Daily News logo

View the latest listings
from all brokers in New York City

We track every unit in the building from 500+ NYC brokerage firms and developers. Get all info about all listings in a single site.

  • For Sale (4)
  • Recent Sales (10)
Unit #
Beds
Baths
Size
Price
Price / Ft2
Price Change
Listed on
1 bed
1 bath
795 ft2
$1,150,000
$1,447
-
Jun 3, 2026
1 bed
1 bath
737 ft2
$999,000
$1,356
-
Apr 10, 2026
3 beds
2.5 baths
1,438 ft2
$1,995,000
$1,387
-4.8%
Mar 16, 2026
2 beds
2.5 baths
1,519 ft2
$2,250,000
$1,481
-
Feb 27, 2026
Unit #
Beds
Baths
Size
Sale Price
Price / Ft2
Price Change
Sold on
2 beds
2.5 baths
1,214 ft2
$1,425,000
$1,174
-20.6%
Jan 15, 2026
1 bed
1 bath
795 ft2
$950,000
$1,195
-16%
Sep 3, 2025
2 beds
2.5 baths
1,438 ft2
$2,175,000
$1,513
-5%
May 22, 2025
1 bed
1 bath
683 ft2
$1,090,000
$1,596
-
Feb 27, 2025
1 bed
1 bath
737 ft2
$1,095,000
$1,486
-
Nov 18, 2024

The industry standard for content and data

Experience a new perspective

Experience a new perspective

Fly through the city with
aerial imagery & advanced maps

Market leading sales data

Market leading sales data

Easily understand the market with
intuitive charts and graphs

Objective ratings & reviews

Objective ratings & reviews

Get the inside scoop – pros & cons
from our in-house analysts

Floorplans for all units

Floorplans for all units

Compare layouts using
our floorplan library

Personalized white glove services not available elsewhere

Discover our hallmark dedication to client assistance and attention.

Off Market listings image

Get Access to
Off Market Listings

Accessing off-market listings offers exclusive opportunities to discover hidden gems before they hit the public market, ensuring you get first dibs on prime properties.

New listings alert image

New listings alert
straight to your inbox

With listing alerts, you’re always in the know. Receive timely updates on new properties, making it easier to spot opportunities and act quickly in a fast-moving market.

Concierge service image

Bespoke white glove
concierge service

Our bespoke matching service pairs buyers with top real estate agents, experts in specific buildings who have been vetted by our team, to offer strategic guidance, insider access, and a tailored approach to finding the perfect home.

The trusted partner
for decades!

Since 1995, thousands have trusted us to find their new home in NYC.

As a first-time homebuyer, the process seemed daunting, but CityRealty made it seamless and stress-free. Their expert advice and responsiveness were invaluable. I found my dream apartment much quicker than I expected, and they were there every step of the way. I couldn't have asked for a better experience!
Ann, First-Time Buyer
Moving to New York was overwhelming, but CityRealty turned my anxiety into excitement. They understood exactly what I needed and helped me find the perfect apartment in an ideal neighborhood. I'm so grateful for their support and expertise.
George J., Relocating Buyer
I was unsure where to start with my apartment hunt and needed a reliable agent. CityRealty matched me with a fantastic agent who truly understood my needs and budget. The match was perfect, leading to a smooth purchasing process. I'm incredibly thankful for CityRealty’s intuitive matchmaking that connected me with exactly the right professional to find my new home.
Kim, Buyer
Renting in New York can be a real challenge, but CityRealty made it so much easier. They helped me navigate through countless options and provided clear, concise information on each listing. I love my new rental and really appreciated the hassle-free experience provided by CityRealty.
Eliott, Renter
As an international buyer, purchasing property in the U.S. seemed complex and intimidating. CityRealty not only helped demystify the process but also provided expert guidance on the legal and financial aspects. Their dedication to ensuring I felt confident and informed every step of the way was remarkable. I highly recommend their services to anyone looking to buy in the U.S. from abroad.
Anthony, International Buyer
←
1/5
→
25K+
Buyers
Assisted
400K+
Transactions
Analyzed
10K+
NYC Buildings
Tracked
15K+
Active
Listings

All the listings
in one place

If it’s on the market, it’s on CityRealty.
Listings from 500+ companies.