How to Get a PSD Letter: Step-by-Step

A PSD letter is documentation of your psychiatric disability and your need for a psychiatric service dog — not a certification of the dog itself. That distinction matters. The letter doesn't make your dog a service dog. The dog's trained tasks do that. The letter is what you use when a housing provider or airline asks for documentation.

Here's how to get one correctly.

What a PSD Letter Actually Is

A PSD letter is a letter from a licensed mental health professional (LMHP) that:

1. Confirms you have a qualifying psychiatric disability
2. States that you are under the provider's professional care (or were evaluated by them)
3. States that your dog performs specific trained tasks that mitigate your disability
4. Includes the provider's credentials, license number, and state of licensure

This is distinct from an ESA letter in one important way: it specifically addresses the dog's functional role in mitigating your disability, not just the existence of a disability and a general need for an animal. Landlords and airlines need to understand that your dog is a trained working animal, not just an emotional support companion.

Who Can Issue a PSD Letter

A PSD letter must come from an LMHP licensed in your state. This means:

• Licensed psychologist (PhD, PsyD)
• Psychiatrist (MD or DO with psychiatry specialization)
• Licensed clinical social worker (LCSW)
• Licensed professional counselor (LPC, LPCC)
• Licensed marriage and family therapist (LMFT)
• Psychiatric nurse practitioner (PMHNP)

The provider must be licensed in the state where you're seeking the accommodation. A provider licensed in Texas cannot write a PSD letter for a tenant in Oregon. This is a common failure point with online providers — always verify that your evaluating provider holds licensure in your state.

What the Assessment Involves

For housing purposes, the assessment focuses on:

• Whether you have a qualifying psychiatric disability
• Whether that disability substantially limits major life activities
• Whether your dog performs trained tasks that mitigate your disability-related limitations

For airline purposes, the DOT form requires your healthcare provider to attest that:

• You have a physical or mental impairment that substantially limits major life activities
• Your service animal is trained to perform a specific task directly related to your disability

A legitimate provider will ask about your psychiatric history, current symptoms, and the specific tasks your dog performs. If a provider issues a PSD letter without any discussion of the dog's trained tasks, the letter may not hold up for airline purposes.

Online vs. In-Person Providers

Your existing therapist or psychiatrist is the ideal option. They know your history, which makes the letter maximally credible. Many providers who are familiar with ESA letters are less familiar with PSD documentation — you may need to explain the distinction and note that the letter needs to specifically address trained tasks in addition to your disability.

Legitimate telehealth providers can conduct valid PSD evaluations remotely. The same criteria apply: real clinical assessment, licensed in your state, no same-day mill operation. A video consultation that covers your psychiatric history and your dog's task work can produce a fully defensible letter.

What to avoid: Services offering same-day PSD letters with no assessment. PSD letters that are issued without any discussion of what tasks your dog performs are not reflecting genuine clinical review. These letters are more likely to be rejected by landlords and airlines.

What a Valid PSD Letter Contains

A properly structured PSD letter should include:

• Provider's full name, professional title (e.g., LCSW, PhD), and practice name
• License type, license number, and state of licensure
• Contact information
• Patient's name
• Date of letter
• Statement that the patient has a qualifying psychiatric disability
• Statement that the provider has personal professional knowledge of the patient's condition
• Statement that the patient's dog performs specific trained tasks that mitigate the disability
• Brief description of the relevant tasks (e.g., "performs deep pressure therapy during panic attacks," "interrupts dissociative episodes through tactile grounding")
• Provider signature

The letter does not need to state your specific diagnosis or disclose your treatment history. The disability and need can be established without that level of disclosure.

How Long It Takes

With your existing provider: typically 3–7 business days depending on their schedule.

With a legitimate telehealth provider: usually 24–72 hours after completing the assessment.

If you need an expedited letter for an upcoming flight or housing move, most legitimate providers offer rush options. Don't use that pressure as an excuse to use a mill — a rejected letter costs you more time than a slight delay.

When You Need a PSD Letter

Housing

You'll use your PSD letter when submitting an accommodation request to a landlord, property manager, or HOA under the Fair Housing Act. Submit the letter with a written accommodation request, keep copies of everything, and allow up to 10 days for the landlord to respond.

Airlines

You'll complete the DOT's U.S. Service Animal Air Transportation Form, which your healthcare provider signs. Submit the form at least 48 hours before your flight through the airline's accessibility portal. Bring a printed copy to the airport. See the airline-by-airline guide for carrier-specific requirements.

Public Access

Here's what many people get wrong: for public access under the ADA, you don't need any documentation. The ADA explicitly prohibits businesses from requiring documentation, certification, or registration for service animals. Your PSD letter is for housing and airlines only — not for showing to restaurant managers or store security.

Keeping Your Letter Current

Letters don't expire legally, but landlords may request updated documentation periodically, and airlines typically want letters dated within 12 months. If you change providers, get a new letter from your current provider rather than submitting an old one from a previous relationship.

Get PSD documentation that works for both housing and airlines. PawPass letters are written by LMHPs who understand what landlords and DOT forms require — covering trained tasks specifically, not just general disability documentation. Get your PSD letter →