Ind. Code § 36-10-10-17

Sec. 17. Before the execution of a lease, the authority proposing to build a convention center for lease to a city shall submit to and receive approval by the city executive and city legislative body of the plans, specifications, and estimates of cost for the convention center. The plans and specifications shall be submitted to and approved by the Indiana department of health, the department of homeland security, and other state agencies that are designated by statute to pass on plans and specifications for public buildings.