The Equitable Building replaced the Equitable Life Building, the previous headquarters of the Equitable Life Insurance Company, which burned down in 1912. Work on the Equitable Building started in 1913 and was completed in 1915. Upon opening, it was the largest office building in the world by floor area. The Equitable Building hosted a variety of tenants and, by the 1920s, was the most valuable building in New York City. The Equitable Life Insurance Company, the building's namesake, occupied a small portion of the building until it moved out during 1960. The owner , Silverstein Properties, purchased the Equitable Building in 1980 and renovated it multiple times.