(1) Whenever any public school district in the state expends public funds for the construction, remodeling, or repair of any school-owned building or for site improvements, other than those expenditures authorized by section 81-829.51 for emergency expenditures or section 79-10,104 for facilities which are not to be owned by the district following their completion, the school board or its representative shall advertise for bids in the regular manner established by the board and accept or reject bids pursuant to section 73-101.

(2) This section does not apply to any construction, remodeling, or repair of any school-owned building or site improvements in which the contemplated expenditure for the complete project does not exceed one hundred thousand dollars. The State Board of Education shall adjust the dollar amount in this subsection every fifth year. The first such adjustment after August 30, 2015, shall be effective on July 1, 2020. The adjusted amount shall be equal to the then current amount adjusted by the cumulative percentage change in the Consumer Price Index for All Urban Consumers published by the Federal Bureau of Labor Statistics for the five-year period preceding the adjustment date. The amount shall be rounded to the next highest one-thousand-dollar amount.

(3) This section does not apply to the acquisition of existing buildings, purchase of new sites, or site expansions by the school district.