Civil Code § 1995.340

(a) Subject to subdivision (b), a restriction on transfer of a tenant’s interest in a lease applies to a subsequent transfer by a tenant, an assignee, or a subtenant notwithstanding the landlord’s consent to a prior transfer or the landlord’s waiver of a standard or condition for a prior transfer.

(b) Subdivision (a) does not apply if either of the following conditions is satisfied:

(1) The lease provides expressly that the restriction on transfer is limited to the original tenant.

(2) The landlord states expressly in writing that the consent or waiver applies to a subsequent transfer.