Rockrose Development

Rockrose Development is a real estate development and management company in New York. The firm was originally founded by the Elghanayan brothers in 1970, and was focused on brownstone renovation in Greenwich Village.

Later, the firm's activities broadened to new apartment construction, leasing, sales and marketing, large-scale rehabilitation, major office development, and investments and acquisitions. Rockrose's investment partners have included Credit Suisse, Goldman Sachs, and other high profile funds and institutions.

Over the five decades to 2020, Rockrose has acquired, developed or repositioned nearly 6 million square feet of office space and approximately 15,000 residential apartments in New York and Washington, DC.

In 2009, the company experienced a major split, as former heads and brothers H. Henry Elghanayan, K. Thomas Elghanayan and Frederick Elghanayan divided their holdings between Rockrose (which Henry Elghanayan continues to lead with his son Justin) and TF Cornerstone, a new firm started by Thomas and Frederick Elghanayan.

Major Rockrose-retained properties post-split include 100 Jane Street, 41 River Terrace and 200 Water Street.

Rockrose took on its first major project in Brooklyn in 2020 with the purchase of a development site at 98 DeKalb Avenue on the border of Fort Greene and Downtown Brooklyn.