Cal. Civ. Code § 1954.53
(a) Notwithstanding any other provision of law, an owner of residential real property may establish the initial rental rate for a dwelling or unit, except where any of the following applies:
(1) The previous tenancy has been terminated by the owner by notice pursuant to Section 1946.1 or has been terminated upon a change in the terms of the tenancy noticed pursuant to Section 827, except a change permitted by law in the amount of rent or fees. For the purpose of this paragraph, the owner’s termination or nonrenewal of a contract or recorded agreement with a governmental agency that provides for a rent limitation to a qualified tenant, shall be construed as a change in the terms of the tenancy pursuant to Section 827.
(4)
(A) Notwithstanding any other law, for a dwelling or unit subject to an ordinance or charter provision that controls the rental rate of the dwelling or unit, the jurisdiction that adopted the ordinance or charter provision may require the owner of the residential real property to permit a tenant who is not subject to eviction for nonpayment and who has a permanent physical disability as defined in subdivision (m) of Section 12926 of the Government Code and that is related to mobility to move to an available comparable or smaller unit located on an accessible floor of the property. An owner that is subject to a requirement established pursuant to this paragraph that is required to grant a tenant’s request for a reasonable accommodation relating to the tenant’s physical disability, after complying with any requirement to engage in an interactive process with the tenant, including Sections 12177 to 12180, inclusive, of Title 2 of the California Code of Regulations, shall allow the tenant to retain their lease at the same rental rate and terms of the existing lease if all of the following apply:
(c) The rental rate of a dwelling or unit whose initial rental rate is controlled by ordinance or charter provision in effect on January 1, 1995, shall, until January 1, 1999, be established in accordance with this subdivision. Where the previous tenant has voluntarily vacated, abandoned, or been evicted pursuant to paragraph (2) of Section 1161 of the Code of Civil Procedure, an owner of residential real property may, no more than twice, establish the initial rental rate for a dwelling or unit in an amount that is no greater than 15 percent more than the rental rate in effect for the immediately preceding tenancy or in an amount that is 70 percent of the prevailing market rent for comparable units, whichever amount is greater.
The initial rental rate established pursuant to this subdivision may not substitute for or replace increases in rental rates otherwise authorized pursuant to law.
(d)
(f) This section does not apply to any dwelling or unit if all the following conditions are met: