An established district may expand the geographic area of the district if: a petition for inclusion is submitted from at least 80% of the owners of the total number of parcels of nonexempt property in the geographic area proposed for inclusion in the district; the petition under item (1) of this subsection is accepted by a majority vote of the board of the district corporation; and the appropriate documents, as applicable, are submitted under § 12–407 of this subtitle and a hearing is held under § 12–408 of this subtitle.