Indiana Code Title 36. Local Government § 36-7-4-1606

Sec. 1606. (a) Venue is in the judicial district where the land affected by the zoning decision is located.

(b) If more than one (1) person may be aggrieved by the zoning decision, only one (1) proceeding for review may be had, and the court in which a petition for review is first properly filed has jurisdiction.

(c) The rules of procedure governing civil actions in the courts govern pleadings and requests under this chapter for a change of judge or change of venue to another judicial district described in subsection (a).

(d) Each person who:

is a party to the petition for review.

(e) Any other person who participated, in the manner described in section 1603(a)(2) of this chapter, in the board hearing that led to the zoning decision may, not later than five (5) days after the decision is made, file with the board a written request that the person receive notice of any petition for review that may be filed.  The written request must include the person's full name and correct mailing address and a reference to the board's docket number relative to the zoning decision.

(f) Any person who has standing under section 1603(a)(2), 1603(a)(3), or 1603(a)(4) of this chapter has an unconditional right to intervene in a proceeding for review.  A motion to intervene in a proceeding for review shall be filed in the manner provided by the rules of procedure governing civil actions in courts.