N.C. Gen. Stat. § 153A-307
A county may levy property taxes within defined service districts in addition to those levied throughout the county, in order to finance, provide or maintain for the districts services provided therein in addition to or to a greater extent than those financed, provided or maintained for the entire county. In addition, a county may allocate to a service district any other revenues whose use is not otherwise restricted by law.
Property subject to taxation in a newly established district or in an area annexed to an existing district is that subject to taxation by the county as of the preceding January 1.
Property taxes may not be levied within any district established pursuant to this Article in excess of a rate on each one hundred dollars ($100.00) value of property subject to taxation which, when added to the rate levied countywide for purposes subject to the rate limitation, would exceed the rate limitation established in G.S. 153A-149(c), unless the portion of the rate in excess of this limitation is submitted to and approved by a majority of the qualified voters residing within the district. Any referendum held pursuant to this paragraph shall be held and conducted as provided in G.S. 153A-149.
N.C. Gen. Stat. § 153A-307