Reviewed August 31, 2026
ESA Letter Requirements
The eight elements a housing provider looks for, and the six mistakes that get letters rejected. Check yours before you send it.
The 8 Things Every ESA Letter Must Include
| # | Element | Why it matters |
|---|---|---|
| 1 | Provider letterhead with real contact details | Lets the housing provider confirm the source |
| 2 | License number | The single most checkable fact on the page |
| 3 | State of licensure | Must match the state you live in |
| 4 | Date of issue | Most providers want something within twelve months |
| 5 | A statement that you have a disability | The first element of the legal test — no diagnosis needed |
| 6 | A statement of disability-related need | The second element: what the animal does |
| 7 | The animal or animals identified | Species and name; ties the letter to the request |
| 8 | Signature | Wet or verified electronic; a typed name alone is weak |
6 Mistakes That Make an ESA Letter Fail
Wrong state they are licensed in
The most common rejection by a distance. An out-of-state license is a clean reason for a landlord to say no.
No license number
Without it the letter cannot be verified, and an unverifiable letter is close to worthless.
The diagnosis is named
Not a legal defect, but it discloses information you were never obliged to share.
Certification language
“This animal is certified” signals to a knowledgeable reader that the author is out of their depth.
Public access claims
Any sentence about shops, flights or restaurants is wrong on the law and undermines the rest.
Undated, or over a year old
Easy to fix and easy to reject. Get it re-dated rather than arguing.
How to Verify a Provider License Yourself
Every state maintains a public licensing board lookup. Search for your state plus the profession — board of psychology, board of behavioral sciences, board of social work, medical board — and enter the number. It takes under a minute, it is free, and it is exactly what a diligent property manager will do. Do it before they do.
State-Specific ESA Letter Requirements
A handful of states add elements. California requires specific written disclosures and a thirty-day relationship under Health & Safety Code § 122318. Iowa requires annual renewal. Florida, Illinois, Michigan, Nevada, Texas, Virginia and Wisconsin each spell out what a landlord may request. Your state page covers what applies where you live.
If your letter has a problem, ask the provider to reissue it. Every item on the mistake list is a five-minute correction for the person who wrote it. Sending a defective letter and hoping is the expensive option, because a denial is harder to reverse than to avoid.
Questions
Frequently Asked Questions
Does the letter have to be on paper?
No. A PDF is standard and preferred by most management companies. Keep the original file rather than a photograph of a printout.
Should the letter mention my landlord by name?
It is not required and it makes the letter single-use. A letter addressed “To whom it may concern” works everywhere.
Can a nurse practitioner sign one?
Yes, where they are licensed in your state and treating you. The credential type matters less than the license and the relationship.
My landlord wants their own form filled in. Do I have to use it?
You cannot be required to use a specific form, but if the form asks only for information the statute permits, using it is often the path of least resistance. If it asks for your diagnosis or medical records, you can decline that part and supply the letter instead.
Skip the Registry. Get a Real ESA Letter.
A clinician licensed in your state, a letter that meets the requirements, and a written request to your housing provider. That is the whole route.
Sources
Sources
- Fair Housing Act, 42 U.S.C. § 3604 — discrimination in the sale or rental of housing — Office of the Law Revision Counsel, U.S. House of Representatives
- 24 C.F.R. Part 100 — HUD regulations implementing the Fair Housing Act — Electronic Code of Federal Regulations
- Joint Statement on Reasonable Accommodations Under the Fair Housing Act — HUD and the U.S. Department of Justice
- Office of Fair Housing and Equal Opportunity — the office that enforces the Fair Housing Act — U.S. Department of Housing and Urban Development
- HIPAA for individuals — your health information privacy rights — U.S. Department of Health and Human Services