Cal. Civ. Code § 38-12-204

(1) Any
tenancy or other estate at will or lease in a mobile home park may be
terminated upon the landlord's written notice to the home owner provided
pursuant to section 38-12-212.9 requiring, in the alternative, payment of rent
or the removal of the home owner's unit from the premises, within a period of
not less than ten days after the date notice is served or posted, for failure
to pay rent when due.

(2) 
Rent shall not be increased without sixty days' written notice to the home
owner provided pursuant to section 38-12-212.9. In addition to the amount and
the effective date of the rent increase, such written notice shall include the
name, address, and telephone number of the mobile home park management, if such
management is a principal owner, or owner of the mobile home park and, if the
owner is other than a natural person, the name, address, and telephone number
of the owner's chief executive officer or managing partner; except that such
ownership information need not be given if it was disclosed in the rental
agreement made pursuant to section 38-12-213.

(3) A
landlord shall not increase rent more than one time in any twelve-month period
of consecutive occupancy by the tenant, regardless of:

(a) 
Whether there is a written rental agreement for the tenancy;

(b) The
length of the tenancy; and

(c) 
Whether the tenant's rental agreement is for a fixed tenancy, a month-to-month
tenancy, or an indefinite term.

(4) A
landlord shall not increase rent on a resident of a mobile home park lot or
issue a notice of rent increase if the park:

(a) 
Does not have a current, active registration filed with the division of housing
in accordance with section 38-12-1106;

(b) Has
any unpaid penalties owed to the division of housing;

(c) (I) 
Has not fully complied with any government order.

(II) As
used in subsection (4)(c)(I) of this section, "government order"
means any final federal, state, or local administrative order or judicial
order.

(d) Has
failed to comply with a provision of section 25-8-1003 (2) and the applicable
deadline to comply with the provision has passed.

(e) Has
been found by the division in a final agency order or by a court, within the
twelve months prior to the final agency or court order, to have failed to
comply with a landlord's responsibilities pursuant to section 38-12-212.3. This
subsection (4)(e) shall not apply to a negotiated settlement that precedes a
final agency or court order.

(4.5) [ Editor's
note: Subsection (4.5) is effective January 1, 2027. ] A landlord that
is temporarily prohibited from increasing rent or issuing a notice of rent
increase pursuant to subsection (4) of this section shall notify all residents
that their rent shall not be increased while the prohibition is effective and
the reason for the temporary prohibition. The landlord shall provide the notice
in writing, in accordance with section 38-12-212.9, and within fourteen days
after the date the landlord is notified that they are temporarily prohibited
from raising rent.

(5) A
notice of a rent increase issued in violation of this section is invalid and
has no force and effect.