Cal. Civ. Code § 3066

(a) Any garment, clothing, wearing apparel or household goods remaining in the possession of a person, firm, partnership or corporation, on which cleaning, pressing, glazing or washing has been done or upon which alterations or repairs have been made, or on which materials or supplies have been used or furnished, for a period of 90 days or more after the completion of such work may be sold to pay the reasonable or agreed charges and the costs of notifying the owner or owners. Provided, however, that the person, firm, partnership, or corporation to whom such charges are payable and owing shall first notify the owner or owners of the time and place of such sale. Provided further, that property that is to be placed in storage after any of the services or labors mentioned herein, shall not be affected by the provisions of this section.
(b) All garments, clothing, wearing apparel or household goods placed in storage, or on which any of the services or labors mentioned in the preceding section of this act have been performed and then placed in storage by agreement and remaining in the possession of a person, firm, partnership or corporation without the reasonable or agreed charges having been paid for a period of 12 months, may be sold to pay said charges. Provided that the person, firm, partnership or corporation to whom the charges are payable, shall first notify the owner or owners thereof of the time and place of sale. Provided, however, that the persons, firms, partnerships, or corporations operating as warehouses or warehousemen shall not be affected by this section.
(c) The posting or mailing of a registered letter, with a return address marked thereon, addressed to the owner or owners, at their address given at the time of delivery of the article or articles to a person, firm, partnership or corporation to render any of the services or labors set out in this act, stating the time and place of sale, shall constitute notice. Said notice shall be posted or mailed at least 30 days before the date of sale. The cost of posting or mailing said letter shall be added to the charges.
Where the address of an owner is unknown, a posting of notice, for a period of 30 days, at a prominent place in the receiving office of the person, firm, partnership or corporation required to give the notice is sufficient.
(d) The person, firm, partnership or corporation to whom the charges are payable, shall, from the proceeds of the sale, deduct the charges due plus the costs of notifying the owner and shall hold the overplus, if any, subject to the order of the owner and shall immediately thereafter mail to the owner thereof at his address, if known, a notice of the sale, the amount of the overplus, if any, due him, and at any time within 12 months, upon demand by the owner, pay to the owner said sums or overplus in his hands.
(e) All persons, firms, partnerships or corporations taking advantage of this act must keep posted in a prominent place in their receiving office or offices at all times one notice which shall read as follows:
“All articles cleaned, pressed, glazed, laundered, washed, altered or repaired and not called for in 90 days shall be sold to pay charges.” “All articles stored by agreement and charges not having been paid for 12 months will be sold to pay charges.”