Illinois Code § 9-2-109

§ 9-2-109.

Except as otherwise provided in Section 9-2-113, the owners of a majority of the frontage of the lots and land upon the street wherein the work is to be done, or their agents, who take oath that they are such owners or agents, shall not be required to present sealed proposals or bids, but, within 10 days after the first publication of the notice of such an award, may elect to take the work, and enter into a written contract to do the whole work at 10% less than the price at which the contract has been awarded. Should those owners fail to elect to take the work, and to enter into a written contract therefor within 10 days, or to commence the work within 30 days after the first publication of the award, and to prosecute the work with diligence, the board of local improvements shall enter into a contract with the original bidder, to whom the contract was awarded, at the prices specified in his bid. (Source: Laws 1961, p. 576.)