GSA’s mission is to "help federal agencies better serve the public by offering, at best value, superior workplaces, expert solutions, acquisition services and management policies." GSA consists of the Federal Acquisition Service (FAS), the Public Buildings Service (PBS), and various Staff Offices, including the Office of Congressional and Intergovernmental Affairs (OCIA). Eleven Regional Offices extend GSA’s outreach to federal customers nationwide.

GSA Regional Offices are located in Boston, New York, Philadelphia, Atlanta, Chicago, Kansas City, Fort Worth, Denver, San Francisco, Auburn (Washington), Washington, DC.

Approximately 12,000 GSA employees provide valuable support to other federal agencies and, in some cases, the general public. GSA is the government’s “landlord,” meeting the office and other space requirements of the federal workforce. GSA is also the premier federal acquisition and procurement force offering equipment, supplies, telecommunications, and integrated information technology solutions to customer agencies. GSA also plays a key role in developing and implementing policies that affect many government agencies and helps other federal agencies improve their service to and communication with the public by offering effective citizen-response tools and services.