ESA Letter Requirements by State: What You Need to Know

The Fair Housing Act is federal — it sets the floor on ESA protections everywhere in the United States. But several states have layered their own consumer-protection laws on top, mostly to crack down on the small minority of services that issue letters without any real clinical review. Here's where the rules differ, and why it matters for your application.

The federal baseline

Before getting into state-by-state rules, it's worth being clear on what the federal Fair Housing Act requires:

• A licensed health-care professional must provide documentation of a disability and the therapeutic need for the animal.
• The housing provider must grant reasonable accommodation, waiving pet rent, deposits, and breed/weight restrictions for the ESA.
• The housing provider may verify the documentation but cannot demand specifics about the disability.

The HUD guidance issued in 2020 (the "Assistance Animals Notice") clarified that documentation can come from any licensed health-care professional with personal knowledge of the disability — not solely psychiatrists or psychologists. Most ESA letters are signed by Licensed Clinical Social Workers, Licensed Mental Health Counselors, Licensed Professional Counselors, or psychologists.

The four states with stricter rules

Four states have enacted laws that go beyond the federal baseline. If you live in any of these, your application will be routed accordingly.

California (AB 468)

California's AB 468, enacted in 2022, requires that the licensed mental health professional issuing the letter has had a client-provider relationship of at least 30 days before issuing the documentation. This is the strictest rule in the country. In practice, this means California applications cannot be a same-day, two-hour turnaround unless you have already been working with a licensed clinician.

For California applicants who do not have an existing therapist relationship, our process establishes one: an initial consultation, a 30-day relationship period (with check-in), and then formal letter issuance. We comply fully with AB 468 and never circumvent it.

Iowa

Iowa law requires the issuing therapist to have an "established personal relationship" with the client before issuing ESA documentation. This is less specific than California's 30-day rule but generally interpreted as more than a single questionnaire review.

Montana

Montana requires the issuing clinician to be licensed in Montana. Out-of-state therapists may not legally issue ESA letters for Montana residents. This narrows the pool of available clinicians and can extend timelines.

Florida (Statute 760.27)

Florida's statute 760.27, signed into law in 2020, requires that the documentation be issued by a licensed health-care provider with "personal knowledge" of the patient's disability. The statute specifically targets letters issued without a real clinical evaluation. Like California, Florida residents may have a longer review timeline if no prior relationship exists.

Top-10 state comparison

The following table summarizes ESA-letter requirements in the ten most-populous U.S. states. "Standard" indicates the federal baseline applies with no additional state law beyond it.

Iowa, Montana, and any state not listed above with similar legislation will follow that state's rules. We maintain a roster of licensed clinicians across all 50 states so that applications can be routed to a clinician who is appropriately licensed in your state when state law requires it.

State licensing for the clinician

Even in states without special ESA laws, mental health professionals can only practice within the scope of their license. A clinician licensed in New York may issue letters for New York residents. They generally cannot issue letters for residents of other states unless they hold a license there or operate under a multi-state compact (such as the Counseling Compact, which a growing number of states have joined).

This is why, when you apply, we ask for your state of residence. Your application is routed to a clinician who is licensed in that state, ensuring the letter is enforceable.

What this means for your timeline

• If you live in California or Florida: Plan for additional time. We'll guide you through the additional steps.
• If you live in Iowa or Montana: Expect a slightly extended review and limited clinician availability — but the same ultimate outcome.
• Everyone else: The standard two-hour turnaround applies.

What if I move?

If you move to a different state mid-letter — say, you were issued a letter in Texas and you relocate to California — your existing letter is generally still valid because it was legitimately issued at the time. However, when you renew, the renewal will follow your new state's rules. If you have any doubt, contact support before submitting your accommodation request to your new landlord.

What landlords ask for

Most landlords accept the letter at face value when it includes the clinician's license number, signature, and date. Some landlords will independently verify by contacting the licensing board (which is a public record) or the clinician directly. Both are entirely permissible under HUD guidance — landlords are entitled to verify authenticity, but not to demand specific medical records.

Bottom line

The Fair Housing Act sets a floor everywhere in the U.S. Four states (CA, IA, MT, FL) raise the bar for the clinical relationship required before a letter can be issued, and we comply with all of them. Wherever you live, your application is routed to a clinician who can lawfully issue your letter.

For state-specific guidance, see your state's page from the state laws section, or read more about the differences between ESAs and Psychiatric Service Dogs in our ESA vs PSD comparison.

State laws change. This article reflects rules as of 2026. For binding legal guidance, consult a licensed attorney in your state.