Landlord ESA Letter Denials: The Problem No One is Studying

There is plenty of information about whether an emotional support animal (ESA) assists people with mental health disorders. But what isn't studied enough is what happens when a landlord denies a person's ESA letter. What is the aftermath that someone has to go through once they receive an ESA denial from their landlord?

Pettable has facilitated thousands of ESA evaluations, and historically under 2% of our customers experience a landlord denial. This rate has been steady over the past four years.

ESA research focuses heavily on whether ESAs work for people, but we want to look at what happens when a landlord denies an ESA letter. As a platform that connects individuals with licensed therapists for ESA evaluations, we have a unique vantage point. We surveyed over 300 members who were denied emotional support animals in the summer of 2026 after their landlords refused to accept their documentation.

Our study is the largest known study of denial outcomes. In this article we will take a deep dive into the impacts that these denials have on our customers.

What the Data Shows — ESA Letter Denial Rates and Trends

Over the past 4+ years, Pettable's baseline denial rate has consistently been under 2% of purchases.

Our clinicians follow all state-specific laws and regulations, ensuring that our ESA letters are legal and meet any "30-day" rules or other state-specific requirements.

Various states have created their own laws and standards for landlords to handle ESA accommodation requests. Certain states require at least a 30-day minimum patient-provider relationship with a therapist before the ESA letter can be written.

States in this category include California, Montana, Louisiana, Arkansas, and Iowa. One may think renters in these states would see higher denial rates because of this rule, but denials in 30-day states largely due to ESA letter fraud or invalid letters, not people who see a licensed provider multiple times through compliant platforms like Pettable..

Florida and New York have stricter verification processes, which can lead to technical denials if paperwork is incomplete or clinicians' licensing numbers are missing.

Around 20 states have ESA anti-fraud laws and regulations that penalize fake documentation or misrepresenting pets as assistance animals. This seems to lead to more denials and more legal scrutiny.

Some states have their own local fair housing offices that process complaints independently. This seems to reduce landlord denials by closing gaps in federal Fair Housing Act (FHA) enforcement and enforcing local laws to protect ESA owners.

What Happens After a Denial — The Human Impact

ESA landlord denials are more than just numbers. They affect real people with mental health issues who are now forced to pivot their housing plans. 

Landlord denials carry significant family, housing, and safety impacts: Of the surveyed group (n=311), 8% of users surrendered a pet (n=25), and 17% had to find a new place to rent (n=52). Worse yet, 26% (n=79) reported having some thoughts of self-harm.

ESA denials can worsen mental health issues, but awareness and advocacy can lead to better protections and support for affected individuals.

The mental health of ESA owners is also at stake. A landlord denial makes members far more likely to get worse: Compared to our control Pettable group (n=3,504), the test (n=73) group was 10.3x more likely to see depression worsen (31.9% of denial group vs. 3.2% of control group) and 39x more likely to see sentiment worsen (63.4% of test group vs. 1.7% of control group).

We also saw a 26% overall self-harm ideation, rising to 40–50% in the worst-outcome groups. This is another reason why it is so important to protect housing access for people with disabilities and ESAs.

What Pettable is Doing About ESA Letter Denials

Pettable is proactively working to ensure our customers have the best chance of getting letters that work. To accomplish this, we are implementing provider and clinical quality initiatives such as:

• Utilizing monthly provider letter audits to maintain our best-in-class, high-quality ESA letter documentation.
  
• Implementing a network management function to ensure that our missed call, late call, and late letter or form rates stay as low as possible so that our customers have what they need.
  

We also offer an ESA landlord toolkit that includes scripts for talking to your landlord and tenant education.

We will continue PHQ-9 outcomes measurements as part of our standard care model.

What's Next — A Call for More Research

These are early findings from an under-studied population, and while it is an exciting starting point, more work is needed. 

Our next phase is intake-to-survey PHQ-9 benchmarking: comparing where members started clinically with where they are a year after denial, alongside members whose letters were accepted. That will turn today's snapshot into a measured before-and-after.

We'd welcome collaboration with researchers, housing advocacy organizations, and policymakers interested in understanding what happens after ESAs are denied. 

To our knowledge, no other study has tracked the mental health trajectory of individuals denied ESA accommodations. We hope this is the first of many.