5 county-level rules, plus city-specific rules for 1 city in Richland County, South Carolina.
Verified from official government sources
Yes. Unincorporated Richland County allows one accessory dwelling per single-family lot in most residential and rural districts. The unit cannot exceed 500 square feet or one-fourth of the principal home's heated floor area, whichever is greater. A manufactured home may not serve as an accessory dwelling.
Richland County LDC Sec. 26-151(b)(1)
Accessory dwellings shall be located only on lots containing one single-family detached structure. Only one accessory dwelling shall be permitted per single-family dwelling. A manufactured home may not be used as an accessory dwelling. The gross floor area of the accessory dwelling shall not exceed five hundred (500) square feet or contain more than one-fourth of the heated floor area of the pr...
In unincorporated Richland County a shed or other accessory structure generally cannot sit in front of the principal home's building line, must stay at least 10 feet from any property line in the rear yard, and in residential districts cannot exceed 1,200 square feet or 50% of the main home's
Richland County LDC Sec. 26-185(b)(1)b.3, d.1
Rear yard requirement. Accessory uses and structures may be permitted in rear yards, provided that they are located not less than ten (10) feet from any property line. ... Accessory structures in residential districts shall not exceed a maximum total area of fifty percent (50%) of the gross floor area of the principal building or one thousand two hundred (1,200) square feet, whichever is greate...
Richland County has no separate garage-conversion ordinance. A detached garage is an accessory structure under LDC Sec. 26-185 and must meet its setback, height, and size limits. Converting garage space to living quarters for a separate household is treated as an accessory dwelling and must meet the Sec. 26-151 ADU
Richland County has no carport-specific ordinance. A carport is an accessory structure under LDC Sec. 26-185: it may not stand in front of the principal home's building line, must be at least 10 feet from rear property lines, meet the district's side setback, and stay within the district height limit.
Richland County LDC Sec. 26-185(b)(1)b
Front yard requirements. Except as otherwise provided in this section, an accessory structure or use shall not be located in front of the building line of the principal structure. ... Rear yard requirement. Accessory uses and structures may be permitted in rear yards, provided that they are located not less than ten (10) feet from any property line.
Richland County has no tiny-home-specific ordinance. A tiny house on a permanent foundation is treated as a single-family dwelling that must meet the building code and district lot/setback standards. A tiny house on wheels is regulated like a manufactured/recreational unit and is not a general residential right; manufactured homes are
Richland County LDC Sec. 26-151(b)(30)
Dwellings, manufactured homes on individual lots. Use districts: Rural, Manufactured Home Park. Manufactured homes must meet the standards set by the Federal Manufactured Housing Construction and Safety Standards Act of 1974 (which became effective June 15, 1976). The tongue, axles, transporting lights, and removable towing apparatus must be removed subsequent to final placement.
1 cities in Richland County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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