What Does an ESA Letter Need to Say? Contents and Signers

An ESA letter needs to say two things clearly: that you have a physical or mental impairment that substantially limits at least one major life activity, and that the animal provides therapeutic emotional support that alleviates a symptom or effect of that disability. Everything else in the letter — your name, the professional’s credentials, the type of animal — exists to make those two statements verifiable. HUD’s 2020 assistance animal guidance (FHEO-2020-01) sets out the recommended contents, and while the guidance calls them “best practices” rather than a required form, a letter that hits every point is far less likely to be questioned.¹

The Five Things the Letter Should State

HUD’s guidance recommends a letter cover the following:

Your name, identifying you as the patient or client.
A statement that the health care professional has a professional relationship with you involving health care or disability-related services.
A statement that you have a physical or mental impairment that substantially limits at least one major life activity.
A statement that the animal provides therapeutic emotional support that alleviates a symptom or effect of your disability, and is not merely a pet.
The type of animal — dog, cat, rabbit, bird, or whatever species the accommodation covers.

The letter also needs the professional’s name, credentials, license information, and the date it was written. Those details let the housing provider confirm the letter came from a real, licensed person with actual knowledge of your situation.¹

Notice what is not on that list. There is no required template, no notarization, no statement under penalty of perjury. A landlord cannot demand any of those, and cannot insist the letter be written on a form of their choosing.¹

What the Letter Should Leave Out

Your specific diagnosis stays out. Housing providers cannot require you to disclose whether the condition is PTSD, major depression, generalized anxiety, or anything else. The professional confirms you have an impairment that substantially limits a major life activity without naming it.¹

Descriptions of trained tasks the animal performs also stay out. Task-based descriptions belong to service animals under the ADA. Emotional support animals help through their presence and companionship, and importing service-animal language into an ESA letter muddies the request instead of strengthening it.

Who Can Sign the Letter

HUD refers to a “health care professional,” not specifically a mental health professional. Psychiatrists, psychologists, licensed clinical social workers, and licensed counselors are the common signers, but a primary care physician or other licensed provider who treats you can write the letter if they have personal knowledge of your disability and your need for the animal.²

The non-negotiable part is a genuine professional relationship. HUD’s fact sheet is blunt: documentation issued without a personal medical relationship is “not meaningful and a waste of money.” The provider needs to have actually evaluated you and have firsthand knowledge of your condition.²

Telehealth counts. HUD acknowledges that many legitimate licensed professionals deliver services remotely, and the medium is not the issue. What matters is whether the provider has actually gotten to know you, not whether the visits happened in an office or on a screen.²

Why Online ESA Letters Get Rejected

Websites that sell ESA “certificates,” “registrations,” or letters after a few clicks and a questionnaire are the single most common reason accommodation requests stall. HUD has specifically addressed these operations: in HUD’s experience, documentation from such sites is not sufficient to establish that you have a disability or a disability-related need for the animal.²

Landlords now recognize the patterns: identical templates across states, letters produced after minimal contact, providers with no ongoing relationship with the patient. When a housing provider sees one of those, they can legitimately push back and ask for more reliable documentation. In roughly a dozen states, submitting fraudulent assistance animal documentation can also carry fines or criminal penalties.

The path that works is straightforward. Establish care with a licensed professional, discuss your condition and how an emotional support animal fits into your treatment, and then ask for the letter. It takes longer than an online purchase and produces documentation that stands up.

Extra Details If Your Animal Is Unusual

Dogs and cats are routine. If you are requesting an accommodation for a less common animal, such as a miniature horse, a reptile, or a potbellied pig, HUD says housing providers may ask for additional information. In that case the letter should also state the date of your last consultation with the professional, any unique circumstances explaining why you need that particular type of animal, and whether the professional specifically recommended it.¹

How Current the Letter Needs to Be

Federal law does not set an expiration date. That said, a landlord reviewing a letter from several years ago can reasonably wonder whether it still reflects your current situation and treatment. A letter dated within the past year avoids that argument. Some states have their own rules, so check local requirements if you are not sure whether yours needs refreshing.

Where an ESA Letter Does Not Help

An ESA letter is a housing document. It does not give your animal access to restaurants, grocery stores, workplaces, or other public spaces. The Americans with Disabilities Act covers public accommodations, and under the ADA only trained service dogs (and in limited cases miniature horses) qualify. Animals that provide comfort through presence alone are excluded.³

Air travel is no longer covered either. Airlines used to accommodate emotional support animals under the Air Carrier Access Act, but a Department of Transportation final rule that took effect in January 2021 redefined “service animal” to mean only trained dogs. Airlines now treat emotional support animals as pets, subject to standard pet policies and fees.⁴

Some housing sits outside the Fair Housing Act as well. The law exempts owner-occupied buildings with no more than four units and, in certain circumstances, single-family homes rented without a real estate broker. If you rent a room in the owner’s house or live in a small owner-occupied building, the landlord may not be required to accept the letter, though Section 504 of the Rehabilitation Act can still apply where the housing receives federal financial assistance.⁵

If you need an animal that can go with you in public or on flights, the question is whether it can qualify as a psychiatric service dog. The dividing line is training: a psychiatric service dog is trained to detect and respond to specific symptoms, such as sensing an oncoming panic attack and performing a trained task in response. That trained response is what separates a service animal from an emotional support animal under both the ADA and DOT rules, and no letter can substitute for it.³

1
U.S. Department of Housing and Urban Development. HUD FHEO Assistance Animals Notice 2020
2
U.S. Department of Housing and Urban Development. Fact Sheet on HUD’s Assistance Animals Notice
3
U.S. Department of Justice. Frequently Asked Questions About Service Animals and the ADA
4
Federal Register. Traveling by Air With Service Animals
5
U.S. Department of Housing and Urban Development. Fair Housing – Equal Opportunity for All