An unauthorized pet can be a real lease violation
If your lease has a no-pet clause and you bring in an animal without your landlord's written permission, that's generally a lease violation your landlord can act on, typically starting with a cure-or-quit notice giving you a window to remove the animal before eviction proceedings continue. Some leases allow pets only with an added deposit or monthly pet rent — check your specific lease rather than assuming a blanket ban, since many "no pet" clauses actually mean "no pet without approval and an added fee." If you want a pet your lease doesn't currently allow, asking for a pet amendment is often more successful than you'd expect, especially with an offer to add a pet deposit.
A service animal isn't a pet, and a no-pet clause doesn't reach it
The Fair Housing Act requires housing providers to make reasonable accommodations in their rules and policies when necessary to give a person with a disability an equal opportunity to use and enjoy a dwelling (42 U.S.C. § 3604(f)(3)(B)). HUD's regulation gives the worked example: a blind tenant's guide dog in a building with a no-pets policy (24 CFR § 100.204). For a service animal — one individually trained to do a task related to a disability — this is settled. A landlord can't refuse the exception to a no-pet policy, can't charge a pet deposit, pet fee or pet rent for the animal, and can't apply breed, size or weight limits to it. Charging anyway is a fair housing violation. That comes from the statute and the regulation, not from a policy a landlord could change.
Where an untrained emotional support animal now stands
An ESA provides comfort rather than performing a trained task, and the federal enforcement picture for one changed in 2026. HUD withdrew its 2013 and 2020 assistance-animal notices on September 17, 2025, and on May 22, 2026 said it will pursue an animal-accommodation complaint only where the animal is individually trained — the same test the ADA uses for service animals.
That is a change in what HUD will investigate, not a repeal. The statute and the regulation above are untouched; HUD's own memo says in terms that nothing in it affects a tenant's right to sue in court, within the Act's two-year window; and a number of states and cities protect ESAs in their own law regardless of what HUD enforces. So an ESA accommodation request is still very much worth making in writing — you just can't assume HUD will take up the complaint for you the way it once would.
A caution about documentation standards you may have read elsewhere
For years, HUD published detailed guidance spelling out exactly what documentation a landlord could and couldn't require to verify an assistance-animal request. Those notices are withdrawn, so the specific "acceptable documentation" checklist still circulating online is no longer current federal guidance. If a landlord asks for documentation, the standard now rests on the statute itself, your state's own law, and how courts in your area have read it. One practical consequence: if your animal is trained to perform a specific task for your disability, say so and name the task — since May 2026 that is what decides whether HUD itself will take the complaint.
What a landlord can still ask
A landlord can still ask for reliable documentation that you have a disability-related need for the animal if that need isn't obvious, and can hold you responsible for actual damage the animal causes, the same as any other tenant. What a landlord can't do is demand a specific certification or registration that no law requires, or — for a service animal — charge the fees normally associated with pets.
A concrete example
Say your lease has a strict no-pets policy, a $300 pet deposit and $40-a-month pet rent. If your dog is trained to alert you to an oncoming seizure, none of that applies to your dog: the lease's pet terms are for pets, and your dog isn't legally one. If instead you have a cat that helps manage a documented anxiety condition with no task training, your landlord still has to consider the accommodation request on its facts and can ask you to substantiate the disability-related need — but if they refuse or charge you anyway, your realistic route is your state's fair-housing agency or a court rather than a HUD complaint. Compare both to a roommate's dog brought in with no disclosure and no accommodation request at all — that's a straightforward lease violation the landlord can act on.
Protecting yourself
If you have an ordinary pet, check your lease's pet clause before you bring the animal home, not after. If you need an assistance-animal accommodation, submit the request in writing along with whatever documentation of your disability-related need you can reasonably provide, and keep a copy. Honestkey can review your uploaded lease's pet policy and flag whether a fee or restriction it lists would actually be enforceable against an assistance animal.