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Name of Management Company Address Address Regarding: Return of Security Deposit for Apartment … Dear Manager, This letter is to inform you that name of tenant will be moving out. We are hereby providing notice of vacancy of the apartment in 30 days as of the end of month/year. In accordance with California Civil Code Section 1950.5 please send the security deposit with all applicable interest to address c/o name. Thank you for your attention in the matter. Sincerely,