Ind. Code § 5-16-1-3
(b) Notwithstanding subsection (a), if a public building or other public work or improvement under this chapter is estimated to cost less than twenty-five thousand dollars ($25,000) and a contract is to be awarded for the work, the awarding officer, commission, or agent may:
(2) invite bids from not less than three (3) persons, firms, limited liability companies, or corporations, known to deal in the work proposed to be done, by mailing a notice for the work not less than three (3) days before the time fixed for receiving bids indicating that plans and specifications are on file in a certain office.
Formerly: Acts 1947, c.306, s.3; Acts 1949, c.136, s.2. As amended by P.L.52-1986, SEC.5; P.L.8-1993, SEC.62.