Quick answer: An emotional support animal (ESA) letter is documentation from a licensed health care professional stating that you have a disability-related need for your cat’s support. It’s about your health, not your cat’s, so it isn’t written by a veterinarian and there’s no ESA “registration” or certificate for the cat. Under the federal Fair Housing Act, a valid letter can support a request for your cat to live with you in housing that otherwise limits pets. It doesn’t give access to public places or, since 2021, require airlines to accept your cat.
Who can write an ESA letter
- A licensed health care professional, such as a psychologist, licensed counselor, therapist, psychiatrist, or physician
- They should have personal knowledge of your condition, based on an evaluation
- A veterinarian can confirm your cat is healthy and vaccinated, but can’t write the ESA letter itself
What housing providers can and can’t ask
- They may ask for reliable documentation of the disability-related need when it isn’t obvious
- HUD guidance says certificates or registrations sold online to anyone, without a real professional relationship, may not be enough on their own
- They generally can’t charge pet fees or deposits for an approved assistance animal, though you’re responsible for damage
State rules
Some states set extra requirements. California, for example, requires the provider to have a client relationship with you for at least 30 days and to complete a clinical evaluation before writing ESA documentation.
Air travel and public places
- Since January 2021, US airlines aren’t required to accept emotional support animals. Most treat them as pets
- ESAs don’t have public access rights like trained service dogs
Red flags with online providers
- “Instant” approval without talking to a licensed professional
- Selling “registrations,” ID cards, or vests as if they’re legally required
- Promising airline or public access
- No verifiable license number or state
Keeping your cat healthy
An ESA cat still needs routine vet care, vaccinations required by local law, and a litter and enrichment setup suited to your home.
This article is general information, not legal advice. Laws vary by state.
Sources
- US Department of Housing and Urban Development (HUD): FHEO Notice FHEO-2020-01, Assessing a person’s request to have an animal as a reasonable accommodation under the Fair Housing Act. 2020
- US Department of Transportation: Final rule on traveling by air with service animals. 2020
- California Health and Safety Code §122318 (AB 468): Emotional support animal documentation requirements. 2022
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.