Indiana Code Title 36. Local Government § 36-9-6.5-7

Sec. 7. After final approval of the resolution by the board, the department shall proceed with the project, work, and capital improvements, or any parts of them, and shall let all contracts, upon separate plans and specifications, in accordance with IC 36-1-12.  The projects authorized may be modified by the board if it considers modification necessary to carry out the purpose of the declaration and resolution, so long as the modifications do not increase the estimate of the total cost of the project as adopted in the original resolution.  All other changes must be processed as new declarations.