S.C. Code Ann. § 31-6-30
(1) "Blighted area" means any improved or vacant area within the boundaries of a redevelopment project area located within the territorial limits of the municipality where:
(b) if vacant, the sound growth is impaired by:
(ii) the area immediately prior to becoming vacant qualified as a blighted area. Any area within a redevelopment plan established by Chapter 10 of Title 31 is deemed to be a blighted area.
(1.5) "Agricultural area" means any unimproved or vacant area formerly developed and used primarily for agricultural purposes within the boundaries of a redevelopment project area located within the territorial limits of the municipality where redevelopment and sound growth is impaired by a combination of three or more of the following factors: obsolete platting of the land; diversity of ownership of the land; tax and special assessment delinquencies on the land; deterioration of structures or site improvements in neighboring areas adjacent to the land; overcrowding of structures and community facilities in neighboring areas adjacent to the land; lack of necessary transportation infrastructure; presence of or potential environmental hazards; lack of water or wastewater; lack of storm drainage facilities; inadequate electric, natural gas or other energy services; lack of modern communications infrastructure; lack of community planning; agricultural foreclosures; and static or declining land values.
(2) "Conservation area" means any improved area or vacant area within the boundaries of a redevelopment project area located within the territorial limits of the municipality that is not yet a blighted area where:
(8) "Redevelopment project costs" means and includes the sum total of all reasonable or necessary costs incurred or estimated to be incurred and any costs incidental to a redevelopment project. The costs include, without limitation: