Indiana Code Title 36. Local Government § 36-9-38-31

Sec. 31. (a) At or before the completion of the assessment roll, the municipal works board may do either of the following:

(b) Fees established under subsection (a) may be reduced, eliminated, increased, or added to by the works board without a hearing, but only to reflect increased or decreased costs of operation and maintenance.

(c) Any other changes in the fees established shall be made only after a hearing for that purpose is petitioned for by the owners of property originally assessed for at least ten percent (10%) of the cost of the improvement.

(d) If a petition is filed with the works board under subsection (c), notice of a hearing shall be given to all owners of property in the improvement district.  The notice may be mailed to the owners at the owners' names and addresses appearing in the records of the official charged with the duty of collecting the assessments.  The notice must:

(e) The works board may not alter the fees at the hearing if the owners of property originally assessed for more than fifty percent (50%) of the total assessments object to the proposed change.