What an ESA Letter Is
An ESA letter is documentation from a licensed mental health professional stating that you have a mental health condition that affects your daily life, and that an emotional support animal helps ease it. In California, it is mainly used to ask a landlord for a reasonable accommodation under fair housing law. Katherine Barton, LMFT provides ESA evaluations in Mission Viejo and online across California.
An emotional support animal is different from a service dog. Service dogs are trained to do specific tasks and can go most places in public. An emotional support animal helps simply by being with you, and its protections apply mainly to housing. Since 2021, airlines no longer have to accept emotional support animals, so a letter won’t get your animal into the cabin.
How It Works With Me
California has clear rules about ESA documentation, and I follow them for every letter:
- New clients are welcome. You don’t need to be a current client to ask.
- We meet at least twice during your first 30 days, in person or online.
- California law requires a client relationship of at least 30 days and a clinical evaluation before a provider writes documentation for an emotional support dog. I use the same timeline for every ESA letter, whatever the animal.
- If an emotional support animal is clinically supported, your letter includes my California license type, number, and effective date, as the law requires.
- There is no separate fee for the letter. You pay for your sessions at my usual rate.
An Honest Evaluation
I can’t promise a letter before we meet. Part of my job is to look honestly at whether an emotional support animal helps with what you are going through. Sometimes it clearly does. Sometimes something else would help more, and I will tell you that, kindly and directly.
A no from me says nothing bad about you or your animal. We can talk about what support would fit, and you are welcome to keep working with me if therapy feels helpful.
If you need a letter this week, I am not the right fit. The timeline comes from California law, and it means your letter rests on a real evaluation. For a plain-language look at the law itself, including what changed federally in 2026, see California ESA Laws: What Renters Need to Know.
“Katherine has been my therapist for four years. She helped me get through the hardest thing in my life. Getting a divorce from a man who I was married to for 40 years. I didn't think I would ever laugh or smile again but with the help of Katherine I am stronger than ever. I have my smile back. I am living my best life. If I was not doing good all I had to do is text her and she answered me even though it was not my appointment time or day. I always knew that I could text her no matter what time or day it was. She pulled me out of some of my darkest days thank you so much Katherine.”
Why an Animal Can Help
There is a reason animals can calm us. A dog leaning against your leg or a cat settling on your lap sends your nervous system a simple signal: you are not alone, and you are safe enough right now. I see this in my equine therapy work too. Animals respond to what our bodies are doing, and they can help us settle when words don’t reach.
Who ESA Evaluations Are For
ESA evaluations are for adults in California who live with a mental health condition such as anxiety, depression, or the after-effects of trauma, and who find that their animal helps them get through the day.
In Person in Mission Viejo or Online in California
Evaluations are available in person at my Mission Viejo office or through secure online therapy anywhere in California. Because I am licensed in California, I can only write letters for people who live in the state.
“Katherine is fantastic! She has so much knowledge in IFS and other therapies. She's always professional and very caring. I always look forward to working with and learning from her.”
Fees and Consultation
- No separate fee for the ESA letter
- Private pay practice
- Superbills available for out-of-network reimbursement
- Free 15-minute phone consultation
Getting Started
If you think an emotional support animal could help, a free 15-minute phone consultation is a good first step. We can talk about what you’re hoping for and walk through how the 30-day process works.