Quadrangle Development Corporation is a privately held, vertically integrated real estate development company based in Washington, D.C., in the United States. By 2002, it was one of the largest real estate developers in the Washington, D.C., metropolitan area.[2]
As of April 2011, the company owned 83 properties (consisting of apartment buildings, condominiums, hotels, and office buildings) totaling 22000000 sqft and worth $8.4 billion.[3]
History
Quadrangle Development Corporation was founded in 1971 by Robert Gladstone and James R. Crozier. The company originally focused on constructing apartment complexes, but after a few years began erecting office buildings and hotels.[2]
In December 2014, Chairman Robert Gladstone died at his home in Washington, D.C.[4]