Fairfax County’s Historic Overlay District (HOD) program was established in 1969 to preserve general districts and individual structures that have historic, cultural, architectural or archaeological significance.
Currently, there are thirteen historic overlay districts in Fairfax County all of which were established between 1970 and 1986. Each district was created for the purpose of protecting the unique heritage resources of that district. To assist the Architectural Review Board (ARB) in achieving that goal, the Fairfax County Zoning Ordinance stipulates that the ARB adopt historic district design guidelines to facilitate its review of applications. Each historic overlay district has its own individual set of guidelines. The guidelines for each district were approved by the ARB in 1992.