California Code, Code of Civil Procedure - CCP § 1255.450

(a) As used in this section, “record owner” means the owner of the legal or equitable title to the fee or any lesser interest in property as shown by recorded deeds or other recorded instruments.

(b) The plaintiff shall serve a copy of the order for possession issued under Section 1255.410 on the record owner of the property and on the occupants, if any. If the property is lawfully occupied by a person dwelling thereon or by a farm or business operation, service shall be made not less than 30 days prior to the time possession is to be taken pursuant to the order. In all other cases, service shall be made not less than 10 days prior to the time possession is to be taken pursuant to the order. Service may be made with or following service of summons.

(c) At least 30 days prior to the time possession is taken pursuant to an order for possession made pursuant to Section 1255.040, 1255.050, or 1255.460, the plaintiff shall serve a copy of the order on the record owner of the property and on the occupants, if any.

(d) Service of the order shall be made by personal service except that:

(e) When the record owner cannot be located, the court may, for good cause shown on ex parte application, authorize the plaintiff to take possession of unoccupied property without serving a copy of the order for possession upon a record owner.

(f) A single service upon or mailing to one of several persons having a common business or residence address is sufficient.