A pet policy sounds like a simple property decision — allow pets or don’t, charge a fee or don’t. In practice, it’s one of the areas where self-managing owners run into the most legal risk, mainly because of one distinction that gets confused constantly: the difference between a pet and an assistance animal.
Pets vs. assistance animals: not the same thing, legally
A pet is a pet. An assistance animal — which includes both service animals and emotional support animals (ESAs) — is legally treated as a reasonable accommodation under fair housing law, not a pet at all. That distinction has real consequences: landlords cannot charge pet rent, a pet deposit, or any additional fee for a legitimate assistance animal, cannot apply breed, size, or number restrictions to one, and cannot deny one under a blanket “no pets” policy. California provides especially strong protections here through the federal Fair Housing Act, the state’s Fair Employment and Housing Act, and Assembly Bill 468, which as of 2026 requires ESA letters to come from a licensed mental health professional following a genuine 30-day patient-provider relationship — a meaningful guardrail against the instant-ESA-letter sites that circulated in past years.
Denying a legitimate assistance animal is only allowed in narrow circumstances — the specific animal poses a documented safety or health threat, the tenant won’t provide requested (limited) documentation, or the accommodation would fundamentally alter the housing. Outside those situations, a no-pets policy simply doesn’t apply.
What you can actually control for true pets
For pets that aren’t assistance animals, owners have real flexibility: reasonable breed or size restrictions, a pet interview or meet-and-greet before approval, a pet count limit, and a written pet addendum spelling out expectations — leash rules, cleanup responsibility, noise, and what happens if damage occurs.
The deposit cap changes what you can charge
This is where a lot of existing pet policies are now out of date. Under California’s AB 12, effective since mid-2024, most landlords can collect no more than one month’s rent as a total security deposit — and that cap includes everything, pet deposits included. You can’t charge a full month’s security deposit and then stack a separate pet deposit on top; a “small landlord” (someone who owns two or fewer rental properties totaling four or fewer units) can collect up to two months, but that’s the outer limit either way. Pet rent, a recurring monthly charge rather than a deposit, is a separate, still-available tool for true pets, since it isn’t a deposit and falls outside the AB 12 cap.
Put it in writing
Whatever your policy is, document it clearly in the lease and a pet addendum, and apply it the same way to every applicant. Inconsistent enforcement is exactly the kind of lease violation mistake that creates fair housing exposure even when unintentional.
This post is for general informational purposes only and is not legal advice — assistance animal accommodations and deposit rules carry real compliance risk, so consult an attorney or your property manager before finalizing a pet policy or responding to an accommodation request.
How Smart One handles this
At Smart One, every pet policy and assistance animal request is handled through a consistent, documented process — protecting owners from fair housing exposure while still giving true pet policies real teeth.
Want help reviewing or setting up a compliant pet policy for your property? Reach out to Smart One Property Management.
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