Pet Deposits, Pet Rent & ESA Rules in Missouri 2026
State pet-deposit treatment, federal Fair Housing Act assistance-animal rules, and what Missouri landlords can and cannot ask.
Missouri draws a sharp line between an ordinary pet and an assistance animal, and the two are governed by completely different rules. There is no Missouri statute regulating pets in private rental housing, pet policies, pet deposits, pet rent, and breed or weight limits are lease terms that you set and enforce as a matter of contract. Assistance animals are the opposite: they are a disability-accommodation question controlled by the federal Fair Housing Act (FHA) and mirrored in the Missouri Human Rights Act (RSMo Chapter 213), and the FHA overrides your no-pets clause and your fee schedule. For a Missouri landlord the practical takeaway is that your leverage over pets is broad, your leverage over service dogs and emotional-support animals is narrow, and confusing the two is where liability starts.
How Missouri Treats Pet Deposits
Security deposit capped at 2 months' rent. Pet deposits count toward this cap; Missouri law does not authorize a separate pet deposit allowance.
Ordinary pets: your lease is the law in Missouri
Missouri has no state landlord-tenant statute governing pets. There is no cap on pet deposits, no limit on pet rent, and no state rule preventing you from banning pets outright or restricting breeds, weights, or the number of animals. Everything about pets is a matter of contract, so the enforceable terms are the ones written into your lease. If your lease is silent on animals, you have not reserved the right to charge for them or remove them, so spell out the policy in writing before the tenancy begins.
Because a pet deposit is not a Missouri assistance-animal accommodation, it is treated like any other security money: it must be handled under Missouri's security-deposit statute (RSMo 535.300), which caps the total deposit at two months' rent and requires return, with an itemized statement of deductions, within 30 days of move-out. A separately labeled 'pet deposit' still counts toward that two-month ceiling. Keep pet-damage deductions documented with move-in and move-out condition records.
Service animals vs. emotional-support animals: know the categories
Two different federal frameworks are in play, and Missouri does not add its own housing-specific definitions. Under the Americans with Disabilities Act (42 U.S.C. 12101 et seq.), a service animal is a dog (and in limited cases a miniature horse) individually trained to perform work or tasks for a person with a disability, guiding, alerting, retrieving, interrupting a panic episode. The ADA governs public accommodations more than private rentals, but its definition is the one people reach for.
In housing, the controlling term is the FHA's broader assistance animal, which includes both trained service animals and emotional-support animals (ESAs). An ESA does not need any specialized training; it qualifies if it alleviates an identified symptom or effect of a disability. Crucially, an ESA is not a pet under the FHA, which is why your pet rules do not apply to it. ESAs are also not limited to dogs, though an unusual species can affect whether the request is reasonable.
Reasonable accommodation: what you must allow, and what you can ask
When a tenant or applicant asks to keep an assistance animal, the FHA and RSMo Chapter 213 require you to grant a reasonable accommodation unless a recognized exception applies. That means you must waive a no-pets policy, and you may not charge a pet deposit, pet fee, or pet rent for the animal, and you may not impose breed, size, or weight restrictions on it. The tenant remains fully responsible for any actual damage the animal causes and for nuisance or safety violations, you are waiving pet charges, not the tenant's liability.
Your right to ask questions is narrow. If the disability or the need is not obvious, you may ask only two things: whether the animal is needed because of a disability, and what work, service, or support it provides. For a non-obvious disability you may request reliable documentation of the disability and the disability-related need, typically a letter from a physician, therapist, or other qualified professional. You may not demand medical records, a diagnosis, or a specific 'registration' or 'certification.' Following HUD's January 2020 assistance-animal guidance keeps these requests defensible.
When you can lawfully say no
A reasonable-accommodation request is not unconditional. You may deny or condition an assistance animal when the specific animal poses a direct threat to the health or safety of others that cannot be reduced by another accommodation, when it would cause substantial physical damage to property, or when the accommodation would impose an undue financial or administrative burden or fundamentally alter your operations. The analysis must be individualized: a denial has to rest on that animal's actual conduct or history, not on breed reputation, size, or a blanket policy.
You may also decline documentation that is plainly unreliable, for example, an instant online 'ESA certificate' with no professional relationship behind it. If you have a genuine, individualized reason to doubt the paperwork, you can request more reliable verification rather than deny outright, and you should document each step in case a fair-housing complaint follows.
ESA and service-animal fraud: Missouri's RSMo 209.204
Missouri is one of the states that criminalizes faking an assistance animal. Under RSMo 209.204, it is unlawful to knowingly misrepresent an animal as a service dog or assistance animal. That includes creating or providing false documentation, fitting an animal with a vest, harness, collar, or sign of the type used to indicate an assistance animal, or misrepresenting a material fact to a health-care provider to obtain the documentation.
A first violation is a Class C misdemeanor (up to 15 days in jail and a fine up to $750 under RSMo 558.011 and 558.002); a second or subsequent violation is a Class B misdemeanor (up to 6 months in jail and a fine up to $1,000). Violators are also liable for any actual damages caused by the misrepresentation. This statute does not give you license to reject legitimate requests; it is a backstop against clear fraud, and the safer path when you have doubts is a documented request for reliable verification.
The Cost of Mishandling a Missouri ESA Request
The most common mistake in Missouri ESA cases is responding with a flat denial, "no pets means no pets", instead of engaging in the interactive process. The interactive process is itself a substantive duty. A landlord who refuses to consider the request, demands more documentation than HUD permits, or imposes a pet fee on an accepted assistance animal will lose at HUD even if the underlying accommodation could have been reasonably denied on its merits.
City-Level Eviction Risk in Missouri
Pet-related eviction filings correlate with overall landlord-tenant litigation rates. View landlord risk and tenant-law profile by city:
Sources & Methodology
- Federal Fair Housing Act: 42 U.S.C. § 3604(f)(3)(B); 24 C.F.R. § 100.204; 24 C.F.R. § 180.671.
- HUD guidance: HUD FHEO Notice 2020-01 (Jan 28, 2020), assistance animals as a reasonable accommodation.
- ADA service animals: 28 C.F.R. § 36.302 (Title III, public accommodations).
- Missouri pet deposit rule: Mo. Rev. Stat. § 535.300.
Related Guides for Missouri Landlords
This overview reflects Missouri law and federal fair-housing rules in effect as of 2026, drawn from the Revised Statutes of Missouri (RSMo 209.204, 213.040, 535.300, 558.011, and 558.002), the federal Fair Housing Act (42 U.S.C. 3601 et seq.), the Americans with Disabilities Act (42 U.S.C. 12101 et seq.), HUD's January 2020 assistance-animal guidance, and the State of Missouri Disability Portal's assistance-animals-in-housing materials. Assistance-animal disputes are fact-specific and enforced by HUD and the Missouri Commission on Human Rights, and a single misstep on a reasonable-accommodation request can trigger a fair-housing complaint. This page is general information for landlords, not legal advice; consult a Missouri landlord-tenant or fair-housing attorney before denying an accommodation or acting on a suspected fraudulent request.
Frequently Asked Questions
Can a Missouri landlord charge a pet deposit for an emotional-support animal?
No. Under the Fair Housing Act, a qualified assistance animal, including an ESA, is not a pet, so you cannot charge a pet deposit, pet fee, or pet rent for it. You can still hold the tenant responsible for any actual damage the animal causes, and you can charge normal pet fees for genuine pets that are not assistance animals.
Is there a Missouri law limiting pet deposits or pet rent?
There is no Missouri statute that specifically caps pet deposits or pet rent; those are lease terms. However, any deposit money you collect, including anything labeled a pet deposit, counts toward Missouri's overall security-deposit cap of two months' rent under RSMo 535.300 and must be returned with an itemized statement within 30 days of move-out.
What can I ask a tenant who requests an emotional-support animal?
If the disability or the need is not obvious, you may ask only two things: whether the animal is required because of a disability, and what work or support it provides. For a non-obvious disability you may request reliable documentation of the disability-related need, typically a letter from a qualified professional. You may not demand medical records, a diagnosis, or any official registration or certification.
Can I refuse an assistance animal because of its breed or size?
No. Breed, size, and weight restrictions do not apply to a qualified assistance animal, even if your pet policy bans that breed. You may only deny or condition the specific animal if it poses a direct threat to health or safety or would cause substantial property damage that cannot be reduced by another accommodation, based on that animal's actual conduct rather than its breed.
What happens if a tenant fakes an ESA or service animal in Missouri?
Missouri's RSMo 209.204 makes knowingly misrepresenting an animal as a service or assistance animal a crime, including using fake documentation or vests or lying to a health-care provider to get a letter. A first offense is a Class C misdemeanor (up to 15 days in jail and a $750 fine) and a repeat is a Class B misdemeanor (up to 6 months and a $1,000 fine), plus liability for actual damages. When you have doubts, request reliable verification rather than reject the request outright.
Does a service animal have different rules than an ESA in Missouri housing?
In housing, both fall under the FHA's broad 'assistance animal' category and get the same reasonable-accommodation protection, including no pet fees. The main difference is documentation: a task-trained service dog's role is often obvious and needs no letter, while an ESA usually requires reliable documentation of a disability-related need because the need is not visible.
Federal authority: 42 U.S.C. § 3604(f)(3)(B); 24 C.F.R. § 100.204; HUD FHEO Notice 2020-01. State authority: Mo. Rev. Stat. § 535.300. Last updated October 23, 2026. For informational purposes only, not legal advice. Pet and assistance-animal questions are highly fact-specific; consult a licensed Missouri attorney before refusing any request.