Cal. Gov. Code § 51284
No contract may be canceled until after the city or county has given notice of, and has held, a public hearing on the matter. Notice of the hearing shall be published pursuant to Section 6061 and shall be mailed to every owner of land under contract, any portion of which is situated within one mile of the exterior boundary of the land upon which the contract is proposed to be canceled. Within 30 days of the tentative cancellation of the contract, the city or county shall publish a notice of its decision, including the date, time, and place of the public hearing, a general explanation of the decision, the findings made pursuant to Section 51282, and a general description, in text or by diagram, of the land under contract, as a display advertisement of at least one-eighth page in at least one newspaper of general circulation within the city or county. In addition, within 30 days of the tentative cancellation of the contract, the city or county shall deliver a copy of the published notice of the decision, as described above, to the Director of Conservation. The publication shall be for informational purposes only, and shall create no right, standing, or duty that would otherwise not exist with regard to the cancellation proceedings.
Ca. Gov. Code § 51284