A variety of online resources provide access to information about historic properties that have been recorded and recognized through SHPO programs. In addition the SC Department of Archives and History (SCDAH) has a variety of tools to access information from the collections held in the State Archives.
Historic Contexts/Survey Reports
National Register Records (through February 5, 2013)
SC Historical Markers Map
SC Historic Properties Record (SCHPR) (all National Register records; survey records in progress)
Survey Finding Aid Index
SCDAH Online Research