California Code, Government Code - GOV § 65864

(a) The lack of certainty in the approval of development projects can result in a waste of resources, escalate the cost of housing and other development to the consumer, and discourage investment in and commitment to comprehensive planning which would make maximum efficient utilization of resources at the least economic cost to the public.

(b) Assurance to the applicant for a development project that upon approval of the project, the applicant may proceed with the project in accordance with existing policies, rules and regulations, and subject to conditions of approval, will strengthen the public planning process, encourage private participation in comprehensive planning, and reduce the economic costs of development.

(c) The lack of public facilities, including, but not limited to, streets, sewerage, transportation, drinking water, school, and utility facilities, is a serious impediment to the development of new housing. Whenever possible, applicants and local governments may include provisions in agreements whereby applicants are reimbursed over time for financing public facilities.