California Code, Public Contract Code - PCC § 20688.2

Any work of grading, clearing, demolition, or construction undertaken by the agency shall be done by contract after competitive bids if the cost of that work exceeds the amount specified in Section 20162, as that section presently exists or may be hereafter amended. With respect to work of grading, clearing, demolition, or construction that is not in excess of that amount, the agency may contract the work without competitive bids, and in contracting the work may give priority to the residents of the redevelopment project areas and to persons displaced from those areas as a result of redevelopment activities.