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City of San Mateo Municipal Code.

7.50.110 Retaliation Barred.

(a) No property owner shall take any of the following actions in retaliation against any member of a tenant household for exercising rights granted under this chapter:

1. Engage in conduct that violates subdivision (a) of Section 484 of the California Penal Code.

2. Engage in conduct that violates Section 518 of the California Penal Code.

3. Use, or threaten to use, force, willful threats, or menacing conduct constituting a course of conduct that interferes with the tenant's quiet enjoyment of the premises in violation of Section 1927 of the California Civil Code that would create an apprehension of harm in a reasonable person. Nothing in this paragraph requires a tenant to be actually or constructively evicted in order to obtain relief.

4. Commit a significant and intentional violation of Section 1954 of the California Civil Code.

5. Threaten to disclose information regarding or relating to the immigration or citizenship status of a tenant, occupant, or other person known to the landlord to be associated with a tenant or occupant. This paragraph does not require a tenant to be actually or constructively evicted in order to obtain relief.

(b) An oral or written warning notice, given in good faith, regarding conduct by a tenant, occupant, or guest that violates, may violate, or violated the applicable rental agreement, rules, regulations, lease, or laws, is not a violation of this section. An oral or written explanation of the rental agreement, rules, regulations, lease, or laws given in the normal course of business is not a violation of this section.

(c) This section does not enlarge or diminish a landlord's right to terminate a tenancy pursuant to existing state or local law; nor does this section enlarge or diminish any ability of local government to regulate or enforce a prohibition against a landlord's harassment of a tenant.