Cal. Sts. & High. Code § 135.7

The department may contract with other public agencies, private individuals, and corporations for the financing, planning, development, construction, management, sale, exchange, or lease of replacement housing. Low-income individuals and families displaced because of the acquisition or clearance of rights-of-way for a project on the state highway system shall be given priority in buying, leasing, transferring, or exchanging property for replacement housing.