San Diego, CA Rental Property Rules: Security Deposit Rules (2026)

(a) This section applies to security for a rental agreement for residential property that is used as the dwelling of the tenant. (b) As used in this section, "security" means any payment, fee, deposit, or charge, including, but not limited to, any payment, fee, deposit, or charge, except as provided in Section 1950.6, that is imposed at the beginning of the tenancy to be used to reimburse the landlord for costs associated with processing a new tenant or that is imposed as an advance payment of rent, used or to be used for any purpose, including, but not limited to, any of the following: (1) The compensation of a landlord for a tenant's default in the payment of rent. (2) The repair of damages to the premises, exclusive of ordinary wear and tear, caused by the tenant or by a guest or licensee of the tenant. [...] (c) (1) Except as provided in paragraph (2), (3), or (5), a landlord shall not demand or receive security, however denominated, in an amount or value in excess of an amount equal to one month's rent, in addition to any rent for the first month paid on or before initial occupancy.