From the March issue: K. Thomas Elghanayan, president of Rockrose Development Corp., spoke to The Real Deal about why he doesn’t use his first name, his engagement and his stints living in Rockrose buildings. Elghanayan founded Rockrose in 1970 with older brother Henry, the chairman. Rockrose’s operating portfolio includes 19 residential properties with 5,500 rental apartments; five office buildings in New York City with 1.43 million rentable square feet; and six office buildings in Washington, D.C., with 1.03 million rentable square feet. Rockrose’s current projects include seven residential buildings with around 3,000 units in Long Island City. Another brother, Frederick, is president of Rockrose Construction Corp. Brother Jeffrey worked at the company before retiring.