Cal. Civ. Code § 1947.3
(a)
(3) Subject to the limitations below, a landlord or a landlord’s agent shall allow a tenant to pay rent through a third party.
(C) The landlord or landlord’s agent may, but is not required to, provide a form acknowledgment to be used by third parties, as provided for in subparagraph (A), provided however that a landlord shall accept as sufficient for compliance with subparagraph (A) an acknowledgment in substantially the following form:
I, [insert name of third party], state as follows:
I am not currently a tenant of the premises located at [insert address of premises].
I acknowledge that acceptance of the rent payment I am offering for the premises does not create a new tenancy.
| (signature of third party) | (date) |