An Emotional Support Animal (ESA) is an animal that provides therapeutic benefit to a person with a mental or emotional disability. Unlike service animals, ESAs are not required to perform specific tasks. Their primary role is to offer comfort, companionship, and emotional stability through their presence.

An ESA provides emotional support through its presence and does not require specialized training. A Service Dog is individually trained to perform specific tasks directly related to a person’s disability.

• ESA: Comfort through presence; no task training required; protected under Fair Housing Act (housing) but not ADA (public access).
• Service Dog: Trained for specific tasks (e.g., guiding, alerting, interrupting behaviors); protected under ADA for public access.

Common ESAs include dogs and cats, but other household animals like rabbits, birds, and hamsters can also qualify. The key is that the animal provides therapeutic benefit for a diagnosed mental or emotional condition.

Landlords may have reasonable restrictions based on the type, size, or breed of the animal, especially if it poses a safety risk or would cause undue financial hardship.

No. There is no official government or legal registry for ESAs. Any website claiming to “register” your ESA or provide a certificate, ID badge, or vest as proof of ESA status is misleading and likely a scam.

The only valid documentation is a letter from a licensed mental health professional. Learn more about the role of a licensed mental health professional in ESA & PSD letters.

Yes. To qualify for an ESA, you must have a diagnosed mental or emotional disability that substantially limits one or more major life activities. A licensed mental health professional must evaluate your condition and confirm that an ESA would be beneficial for your treatment.

Any licensed mental health professional — including psychologists, psychiatrists, licensed clinical social workers (LCSWs), and licensed counselors — can write an ESA letter, provided they have an established therapeutic relationship with you and have conducted a clinical evaluation.

For an ESA dog, the professional must have a client-provider relationship of at least 30 days in some jurisdictions.

There is no universal expiration rule. However, many providers recommend annual renewal, especially if your housing provider requests updated documentation. Airlines and other organizations may require recent forms, so it’s best to check with the specific entity you are dealing with.

A Psychiatric Service Dog (PSD) is a dog individually trained to perform specific tasks to assist an individual with a psychiatric disability such as PTSD, bipolar disorder, major depression, or panic disorder.

Examples of tasks include:

• Alerting to an impending panic attack
• Providing deep pressure therapy during episodes of anxiety
• Interrupting harmful behaviors (e.g., self-harm)
• Guiding the handler during dissociative episodes

No. Under the ADA, a PSD is not required to have a letter to access public spaces. The law focuses on the tasks the dog performs, not documentation. Businesses may only ask two questions: (1) Is this a service dog required for a disability? and (2) What task has it been trained to perform?

However, a PSD letter is necessary for housing accommodations (under the FHA) and for air travel (under the ACAA).

Ethically and clinically, a PSD letter is stronger when written by a professional with an ongoing therapeutic relationship. However, a licensed professional who conducts a legitimate, thorough evaluation may provide documentation after an initial assessment. The letter must be based on a real evaluation and reflect an accurate diagnosis and need for a service dog.

A legitimate PSD letter should include:

• Clinician credentials: Name, license number, and contact information
• Diagnosis: The specific mental health condition and how it qualifies as a disability
• Need for the service dog: An explanation of how the dog mitigates the disability
• Description of tasks: Specific tasks the dog is trained to perform
• Clinician’s signature and date

The letter should be on the clinician’s official letterhead.

The main difference is training and legal status:

• PSD: Trained to perform specific tasks; protected under ADA (public access), FHA (housing), and ACAA (air travel).
• ESA: Provides emotional support through presence; not task-trained; protected primarily under FHA for housing; no longer protected for air travel.

To get a legitimate ESA letter:

1. Consult a licensed mental health professional (therapist, psychologist, psychiatrist, LCSW, etc.) who is licensed in your state.
2. Undergo a clinical evaluation to determine if you have a qualifying mental or emotional disability.
3. Discuss the benefits of an ESA for your condition.
4. If approved, the professional will provide a letter on their official letterhead with their license information.

Learn more about how it works and read our reviews.

You can use an online service only if it connects you with a licensed mental health professional who conducts a real, live consultation and evaluation. A legitimate letter must come from a licensed professional who has assessed your condition.

Be cautious of services that offer “instant” letters, “lifetime guaranteed” letters, or letters without a proper evaluation — these are red flags for scams.

A valid ESA letter should include:

• Clinician’s name, license number, and contact information
• Statement that you have a mental or emotional disability
• Statement that an ESA is part of your treatment plan
• Clinician’s signature and date
• Letterhead of the clinician’s practice

Some jurisdictions may require additional details about the clinical relationship (e.g., length of treatment).

For an ESA dog, some states and jurisdictions require an established client-provider relationship of at least 30 days before a letter can be issued. This requirement does not apply to other types of ESAs (e.g., cats, birds).

Always check the requirements in your specific jurisdiction.

The cost varies depending on the mental health professional and the evaluation process. Typically, you’ll pay for a standard therapy or consultation session. Be wary of websites offering letters for a flat fee without a consultation — these are often scams.

Some community mental health centers or university clinics may offer low-cost or sliding-scale options.

Yes, a primary care physician can write an ESA letter if they are qualified to diagnose a mental or emotional disability. However, mental health professionals (therapists, psychiatrists, psychologists) are generally preferred because they have more specialized expertise in assessing the need for an ESA.

No. Online ESA registries are not legitimate. There is no official government registry for ESAs. Any website that claims to “register” your ESA or provide a certificate, ID, or vest as proof of ESA status is misleading and likely a scam.

The only legally valid documentation is a letter from a licensed mental health professional.

Under the Fair Housing Act (FHA), landlords must provide reasonable accommodations for ESAs, even if they have a “no pets” policy. However, a landlord can deny accommodation if:

• The ESA poses a direct threat to the health or safety of others
• The ESA would cause undue financial hardship
• The ESA is not housebroken or is disruptive

No, not as a service animal. As of 2021, the DOT no longer recognizes ESAs as service animals under the Air Carrier Access Act (ACAA). ESAs now fly as pets and are subject to each airline’s pet policy — including fees, carrier requirements, and size restrictions. Review current airlines policies for ESA and airlines policies for ESA and PSD.

Psychiatric Service Dogs (PSDs) are still protected under the ACAA and may fly in the cabin at no charge with proper documentation. Learn more about flying with PSD ACAA rights.

To fly with a Psychiatric Service Dog in 2026, you typically need:

• DOT Service Animal Air Transportation Form — submitted at least 48 hours before departure
• Veterinary Health Certificate — dated within 10 days of travel (varies by airline)
• PSD letter — may be requested by the airline as part of their verification process

Always check with your specific airline, as requirements can vary. Review flying with PSD ACAA rights for more details.

Yes, landlords can impose breed restrictions based on legitimate safety concerns or insurance policies. These restrictions can apply even to ESAs. However, landlords must make the determination on a case-by-case basis and cannot have blanket policies that effectively deny reasonable accommodation.

No. Under the Fair Housing Act, landlords cannot charge pet fees, pet deposits, or pet rent for legitimate ESAs or service animals. However, you are still responsible for any damage caused by the animal.

No. The Americans with Disabilities Act (ADA) only protects Service Dogs that are individually trained to perform specific tasks. ESAs are not covered under the ADA and do not have public access rights.

This means businesses, restaurants, and other public places are not required to allow ESAs.

ESAs are not protected under the ADA, so employers are generally not required to allow them in the workplace. However, you may be able to request an ESA as a reasonable accommodation under the ADA if your ESA qualifies as a service dog (i.e., is task-trained) or under the Rehabilitation Act for federal employees.

This is assessed on a case-by-case basis.

No. While both are written by licensed mental health professionals, they serve different purposes.

• ESA letter: Confirms a mental/emotional disability and the need for an ESA for comfort/support. Used primarily for housing accommodations.
• PSD letter: Confirms a psychiatric disability and explains how a task-trained service dog mitigates the disability. Used for housing, air travel, and sometimes public access verification.

No. The ADA does not require that service dogs be professionally trained. Handlers may owner-train their PSD, provided the dog is individually trained to perform specific tasks related to the handler’s disability.

However, the dog must be housebroken, under control, and not pose a direct threat to others.

Under the ADA, there are no breed restrictions for service dogs. However, individual airlines or housing providers may have reasonable policies regarding breed, size, or weight, especially for safety or insurance reasons.

Yes, you can have more than one ESA if your mental health professional determines that multiple animals are necessary for your treatment. However, housing providers may evaluate each animal on a case-by-case basis and may deny unreasonable requests.

If your ESA letter is rejected by a housing provider, you can:

• Ask for clarification on why it was rejected
• Provide additional documentation from your clinician
• File a complaint with the U.S. Department of Housing and Urban Development (HUD) if you believe your rights under the FHA have been violated

Not necessarily. Your ESA letter should state that you have a disability and need the animal for support, but it does not need to include your specific diagnosis. Landlords are entitled to know that the accommodation is necessary, but they do not have the right to know your medical history.

No. A PSD letter is specifically for dogs that are task-trained to assist with a psychiatric disability. If your dog provides emotional comfort only, it is an ESA — not a PSD — and should be documented with an ESA letter.

Misrepresenting an ESA as a PSD is a violation of the law in some states.

To find a legitimate professional:

• Ask your primary care physician for a referral
• Search online directories for licensed therapists or psychiatrists in your state
• Check with your insurance provider for in-network mental health professionals
• Look for professionals with experience in working with ESAs or who specialize in your condition

Learn more about the role of a licensed mental health professional in ESA & PSD letters.

Yes, your ESA letter is generally valid for multiple housing applications. However, each housing provider may have their own verification process or forms. It’s a good idea to keep copies of your letter and be prepared to resubmit it as needed.

No. ESAs are not required to wear vests, ID tags, or other special gear. Vests are often associated with service animals, which have different legal protections. While some ESA owners choose to use a vest for convenience or identification, it is not legally required.