Service Employees International Union (SEIU) Washington, DC Size 190,000 SF Budget $20,000,000 Completion 2006   SEIU purchased this occupied building to redevelop as their international headquarters. Constructed in 1979, the building’s mechanical and fenestration systems will undergo a complete replacement. Additionally, as the existing tenants move out, SEIU will renovate the office floors for their own use. The project will conform to a high LEED certification as a part of the renovation program.