N.C. Gen. Stat. § 47C-3-115

(a) Until the association makes a common expense assessment, the declarant shall pay all the common expenses. After any assessment has been made by the association, assessments thereafter must be made at least annually by the association. (b) Except for assessments under subsections (c), (d), and (e), all common expenses must be assessed against all the units in accordance with the allocations set forth in the declaration pursuant to G.S. 47C-2-107(a). Any past due common expense assessment or installment thereof bears interest at the rate established by the association not exceeding eighteen percent (18%) per year. (c) To the extent required by the declaration: (1) Any common expense associated with the maintenance, repair, or replacement of a limited common element must be assessed against the units to which that limited common element is assigned, equally, or in any other proportion that the declaration provides; (2) Any common expense or portion thereof benefiting fewer than all of the units must be assessed exclusively against the units benefited; and (3) The costs of insurance must be assessed in proportion to risk and the costs of utilities must be assessed in proportion to usage. (d) Assessments to pay a judgment against the association (G.S. 47C-3-117(a)) may be made only against the units in the condominium at the time the judgment was entered, in proportion to their common expense liabilities. (e) If any common expense is caused by the misconduct of any unit owner or occupant, the association may assess that expense exclusively against the unit of that owner or occupant. (f) If common expense liabilities are reallocated, common expense assessments and any installment thereof not yet due shall be recalculated in accordance with the reallocated common expense liabilities.