PCC §20311: (a) (1) The construction of facilities and works, when the expenditure required exceeds ten thousand dollars ($10,000), shall be by contract let to the lowest responsible bidder.

(a) (1) The construction of facilities and works, when the expenditure required exceeds ten thousand dollars ($10,000), shall be by contract let to the lowest responsible bidder. (2) Notice requesting bids shall be published at least once in a newspaper of general circulation, which publication shall be made at least 10 days before bids are received. The board may reject any and all bids and readvertise in its discretion. (3) When the expected procurement required exceeds one thousand dollars ($1,000), the board shall seek a minimum of three quotations, either written or oral, which permit prices and other terms to be compared. (b) (1) The purchase of all supplies, equipment, and materials, when the expenditure required exceeds one hundred thousand dollars ($100,000), shall be by contract let to the lowest responsible bidder or, in the district’s discretion, to the responsible bidder that submitted a proposal that provides the best value, as defined in paragraph (2), to the district on the basis of the factors identified in the solicitation. (2) For the purposes of this section, “best value” means the overall combination of quality, price, and other elements of a proposal that, when considered together, provide the greatest overall benefit in response to the requirements described in the solicitation documents. (3) Notice requesting bids shall be published at least once in a newspaper of general circulation and on the district’s procurement Internet Web site, which publication shall be made at least 10 days before bids are received. The board may reject any and all bids and readvertise in its discretion. (4) To the extent practicable, when the expected procurement required exceeds two thousand five hundred dollars ($2,500) but does not exceed one hundred thousand dollars ($100,000), the board shall seek a minimum of three quotations, either written or oral, which permit prices and other terms to be compared. (5) This subdivision applies solely to the procurement of supplies, equipment, and materials and shall not apply to construction contracts.