California Code, Business and Professions Code - BPC § 5499.2

(a) The legislative body of a city or county may declare, by resolution, as public nuisances and abate all illegal on-premises advertising displays located within its jurisdiction. The resolution shall describe the property upon which or in front of which the nuisance exists by giving its lot and block number according to the county or city assessment map and its street address if known. Any number of parcels of private property may be included in one resolution.

(b) Prior to adoption of the resolution by the legislative body, the clerk of the legislative body shall send not less than a 10 days' written notice to all persons owning property described in the proposed resolution. The notice shall be mailed to each person on whom the described property is assessed on the last equalized assessment roll available on the date the notice is prepared. The notice shall state the date, time, and place of the hearing and generally describe the purpose of the hearing and the nature of the illegality of the display.