SC Const., Article X, Section 6

Establishment of method of valuation for assessment of real property within State. Except as otherwise provided in this section, the General Assembly may vest the power of assessing and collecting taxes in all of the political subdivisions of the State, including counties, municipalities, special purpose districts, public service districts, and school districts. Property tax levies shall be uniform in respect to persons and property within the jurisdiction of the body imposing such taxes; provided, that on properties located in an area receiving special benefits from the taxes collected, special levies may be permitted by general law applicable to the same type of political subdivision throughout the State, and the General Assembly shall specify the precise condition under which such special levies shall be assessed. For the tax year beginning 2007, each parcel of real property in this State shall have a maximum value for ad valorem taxes that does not exceed its fair market value. The General Assembly is authorized, by general law, to define “fair market value” and to define when property has been improved or when losses have occurred to change the value of the real property. The General Assembly shall establish, through the enactment of general law, and not through the enactment of local legislation pertaining to a single county or other political subdivision, the method of assessment of real property within the State that shall apply to each political subdivision within the State. Each political subdivision shall value real property by a method in which the value of each parcel of real property, adjusted for improvements and losses, does not increase more than fifteen percent every five years unless, as defined by the General Assembly, an assessable transfer of interest occurs