When the U.S. General Services Administration (GSA) wanted to renovate the Martin Luther King, Jr., federal building (MLK) in downtown Atlanta, a Depression-era building that originally served as the central postal facility for the Southeast, sustainability was an important part of the process. The $62 million renovation and rehabilitation of the MLK building, overseen by architecture firm Lord, Aeck & Sargent, was completed in 2011 and achieved LEED Gold certification from the U.S. Green Building Council.