At a glance
Firm: Rabsky Group Principals: Simon Dushinsky and Isaac Rabinowitz ("Rabsky" is a portmanteau of the two surnames) Headquarters: Williamsburg, Brooklyn Focus: High-volume Brooklyn residential development (rental and condominium), with selective Manhattan new-construction projects Manhattan footprint: Co-developer of two Upper East Side condominiums with The Chetrit Group Reputation in brief: A large, privately held, notably press-shy Brooklyn developer with a conservative-underwriting reputation Source: The Roebling Team at Compass — verified against public records, court filings, and published reporting. July 2026.
Who Rabsky Group is
Rabsky Group is the firm of Simon Dushinsky and Isaac Rabinowitz, one of the most active — and most private — residential developers in Brooklyn. The company is rooted in Williamsburg's Hasidic community and built its scale on Brooklyn rental and condominium product, holding a large portfolio of buildings across the borough. Reporting consistently describes Rabsky as conservative in its financing: it favors low-leverage capital, has avoided the mezzanine-heavy structures that sank other developers, and is not known to have lost a project to foreclosure.
On the Upper East Side, Rabsky appears as a co-developer alongside The Chetrit Group on two ground-up Lenox Hill condominiums — a Manhattan turn for a firm whose center of gravity is across the river. For a buyer, the useful framing is a partnership: Rabsky supplies development capacity and capital discipline, while the on-site design and delivery on these two buildings run through the Chetrit-Rabsky joint venture.
Buildings by Rabsky Group
Rabsky projects profiled on this site — both co-developed with The Chetrit Group:
- 1357 Second Avenue — an 18-story, 54-residence prewar-inspired condominium at 72nd Street, designed by Peter Pennoyer Architects with C3D Architecture as architect of record
- 252 East 72nd Street — a 21-story, roughly 53-residence Pennoyer-designed condominium directly across from the Second Avenue subway's 72nd Street station
Reputation and what a buyer should know
On build quality, we found no construction-defect litigation or homeowner-defect complaint against Rabsky's Manhattan condominiums, and the firm's broader reputation is for disciplined, low-leverage development rather than distress. The honest caveat is one of attribution, not of defects: both Upper East Side buildings are joint ventures with The Chetrit Group, so a buyer weighing sponsor track record should read Rabsky and Chetrit together and review each building's offering plan and current financials on its own terms — confirming lien and title status and the warranty and punch list, as with any new-construction purchase.
The Roebling Team on Rabsky buildings
We publish developer profiles because a buyer choosing a new-construction condominium is, in part, betting on the developer — its quality, its staying power, and its record when things go wrong. On the two Rabsky-Chetrit Lenox Hill condominiums, the design pedigree is real and the sponsorship is well-capitalized. We bring that building-by-building context to every new-development transaction.
Corey Cohen, Principal · The Roebling Team at Compass 646.939.7375 · c.cohen@compass.com
This developer profile reflects publicly available information — including NYC public records, court filings, and published reporting — and The Roebling Team's transaction experience. It is provided for research purposes and is not legal advice; nothing here alleges wrongdoing or building defects beyond what the cited public record supports. The Roebling Team at Compass does not represent Rabsky Group. © 2026 The Roebling Team at Compass.