How to Verify an ESA Letter Is Legitimate: A Checklist for Tenants and Landlords

The ESA Letter Legitimacy Checklist

Use this checklist to evaluate any ESA letter — whether you are verifying the letter you received, or evaluating one as a housing provider:

Required Elements

• ☐ Clinician's full name — the name of the licensed professional who issued the letter
• ☐ Professional credentials — title (MD, PhD, LCSW, LPC, LMFT, etc.)
• ☐ License number — the specific license number issued by the state licensing board
• ☐ State of licensure — the state in which the clinician holds their active license
• ☐ Contact information — phone number or email for verification
• ☐ Disability confirmation — statement that the person has a disability under the FHA
• ☐ Therapeutic nexus — statement that the identified animal provides support related to that disability
• ☐ Animal identification — the name and species of the animal
• ☐ Original signature — the clinician's signature (wet or electronic)
• ☐ Date — the date the letter was issued (within the past 12 months)
• ☐ Letterhead — the clinician's or practice's letterhead

How to Verify the Clinician's License

Every state maintains a public searchable database of licensed mental health professionals. Here is how to check:

1. Search for "[State name] [license type] license verification" — e.g., "California LCSW license verification"
2. Enter the clinician's name or license number in the state licensing board's search tool
3. Confirm the license is active, that the license type matches what is stated in the letter, and that the license number matches
4. Confirm the state of licensure matches the state where the housing is located (clinicians must be licensed in the state where their client resides)

If the clinician does not appear in the state database, or if their license is expired or suspended, the letter is fraudulent.

Red Flags That Suggest a Fraudulent Letter

• No license number: A legitimate ESA letter always includes the clinician's license number. No license number = no verifiable credentials.
• Generic or missing letterhead: Legitimate letters are on professional letterhead. A letter that looks like a template with fields filled in is suspicious.
• Instant issuance: A letter issued instantly (within seconds of completing an online form) has not been reviewed by a clinician. Real clinical evaluations take time.
• Bundled with registry certificates or ID cards: National ESA registries, certification programs, vests, and ID cards have no legal value. Providers that sell these alongside ESA letters are typically not legitimate clinical services.
• Very low price: A legitimate ESA letter requires a licensed clinician's time. Letters priced at $30–$60 cannot reflect the cost of a genuine clinical evaluation.
• Guaranteed approval: No legitimate clinician can guarantee approval before evaluating a patient. A guarantee of approval means there is no real evaluation.

For Housing Providers: How to Handle an ESA Letter

If you are a landlord evaluating an ESA accommodation request:

• You may contact the clinician to verify the letter's authenticity — you may not ask for medical details beyond what is in the letter
• You may verify the clinician's license through the state licensing board's public database
• You may not require additional documentation beyond the letter, such as medical records or a diagnosis
• You may not deny the accommodation based solely on the fact that the letter was obtained through a telehealth service

From the Clinician

As Head of Legal & Compliance, I've reviewed hundreds of ESA letters — both ours and those that clients brought us after their landlord rejected them. The patterns in fraudulent letters are strikingly consistent: no clinician name, license number formatted as "ESA-XXXX" rather than a state-issued number, no state of practice identified, and a template that could have been issued in any state for any person. The HUD guidance on assistance animals describes what constitutes "reliable documentation" from a clinician — and the fraudulent letters I see meet none of those criteria. What those services are selling is the appearance of documentation, not documentation itself.

Client scenario: A client came to us after their second landlord rejection. Their first letter, purchased for $49, named a clinician whose license number returned no results on the California licensing board search. Their second letter, from a different cheap service, named a licensed psychologist — but one whose license had lapsed three years prior. After obtaining a legitimate letter through our clinical evaluation process, their third landlord accepted without any follow-up questions. The client told us they had spent more money on the two fake letters than a legitimate evaluation would have cost.

A Fair Look at the Other Side

Even thorough verification steps are imperfect: some bad actors use real license numbers belonging to legitimate clinicians who did not actually issue the letter — a fraud that standard license board verification cannot catch. The most reliable additional check is to call the provider's office directly, using a phone number found independently through the state licensing board (not one printed on the letter), to confirm the letter was actually issued to you. A legitimate provider will confirm without hesitation; a fraudulent service often cannot.

Related: ESA letter scam red flags · Online vs in-person ESA letters · ESA registration scams