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First of all understand that once the Sheriff has executed a Writ and locked him out, the former landlord (i.e. you) does not have to allow them back in. For their items left, that is a different matter.
Ca. Civil Code § 1983 et seq. controls here. The landlord must send a notice to the place the tenant is expected to receive it that (1) describes the property in sufficient detail for the tenant to identify it, (2) advises him that he has 15 days (18 days if the notice is mailed) to claim it, (3) appraises him of reasonable storage costs, and (4) tells him where to claim the property.
The notice must also inform him that unclaimed property of value will be sold at a public sale and property believed to be worth less than $300 will be kept, sold, or destroyed.
After deductions for storage, advertising, and the sale, landlords must turn over to the county any residual proceeds.
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