(a) At the hearing on readjustment of assessments, the commissioners court shall hear the petition and receive evidence for or against the petition.
(b) The commissioners court shall order a reassessment of benefits if it finds that the aggregate amount of assessed benefits as shown by the previous final judgment and decree is insufficient to carry out the original engineer’s report or changes, repairs, or additions to the report or there has been a material change in the relative value of the benefits conferred on the property in the district, or for some reason the assessment of benefits is inadequate or inequitable.

(c) If the commissioners court orders a reassessment, it shall appoint commissioners of appraisement as provided in § 57.263 of this code, and the new commissioners of appraisement have the same powers, rights, privileges, and duties as provided in § 57.267 of this code.