State pet-deposit treatment, federal Fair Housing Act assistance-animal rules, and what Idaho landlords can and cannot ask.
Idaho gives landlords wide latitude over ordinary pets and no statutory cap on what you can charge, but that freedom stops at the door of federal disability law. Service animals and emotional support animals (ESAs) are not pets, and the same pet deposit, pet rent, or breed restriction you enforce against a dog owner cannot be applied to a qualified assistance animal. Idaho layers one useful protection on top of the federal baseline: Idaho Code 18-5811A makes it a misdemeanor to fake a disability or misrepresent an animal to obtain housing benefits. This page covers where you have discretion, where federal law overrides it, and how to document requests without stepping into a fair-housing complaint.
Idaho has no statutory cap on the security deposit or pet deposit. The amount is set by the lease.
For a genuine pet, Idaho leaves the terms almost entirely to your lease. You may prohibit pets outright, limit breed, size, or number, charge pet rent, and require a pet deposit. Idaho sets no maximum on security deposits, so a pet deposit is legally just part of the overall security deposit under Idaho Code 6-321. That classification matters: because it is a security deposit, it is refundable and cannot be kept for normal wear and tear. If you want a truly non-refundable pet charge, structure it as pet rent or a clearly labeled non-refundable fee in the lease rather than calling it a deposit. Put every pet term in writing, including who is responsible for damage and any weight or breed limits, so there is no dispute at move-out.
Under the federal Fair Housing Act and the Idaho Human Rights Act, a landlord must make a reasonable accommodation for a tenant with a disability who needs an assistance animal. Assistance animals include both ADA service animals and emotional support animals. Because they are not pets, you cannot charge a pet deposit, pet rent, or any pet fee for them, and you cannot apply a no-pets policy or breed and size restrictions to them. This holds even in a building that otherwise bans animals entirely. The trade-off is narrow: the tenant still owes you for any actual damage the animal causes beyond normal wear and tear, which you can recover from the standard security deposit or by direct claim, just as with any other tenant damage.
The permissible inquiry depends on whether the disability and the animal's role are obvious. For a service animal where the need is not apparent, the ADA lets you ask only two questions: whether the animal is required because of a disability, and what work or task it has been trained to perform. You may not demand ID cards, certificates, registration, or a demonstration. For an ESA request, where the disability-related need is not obvious you may ask for reliable documentation from a health-care or other qualified professional confirming the disability and the disability-related need for the animal. You cannot require a specific form, a particular provider, or online registry "certificates." Respond to accommodation requests promptly and in writing; unexplained delay or refusal is itself a fair-housing risk.
Idaho is one of the states that criminalizes assistance-animal fraud. Idaho Code 18-5811A makes it a misdemeanor for a person who is not disabled, and not training an assistance animal, to use an assistance device, assistance animal, or service dog to attempt to gain the treatment or benefits given to people with disabilities. That reaches a tenant who fakes a disability or passes off an ordinary pet as an assistance animal to dodge your pet fees or no-pets policy. A misdemeanor under Idaho Code 18-113 carries up to six months in county jail, a fine up to $1,000, or both. This statute is not a self-help tool: you cannot deny the accommodation on suspicion alone. If documentation looks fraudulent, verify through proper channels and, where warranted, refer the matter to law enforcement rather than rejecting the request unilaterally.
When a tenant with a pet moves out, the pet deposit follows the ordinary Idaho deposit rules. Under Idaho Code 6-321, you must refund the deposit within 21 days if the lease fixes no time, and in any event within 30 days after the tenant surrenders the premises. If you keep any part of it, you must provide a written statement itemizing the deductions. Charges must reflect actual damage, not normal wear. For assistance-animal households, the same 21/30-day timeline and itemization apply to the standard security deposit; you simply cannot have collected a separate pet deposit in the first place. Document the unit's condition at move-in and move-out with dated photos so that any animal-related damage claim is defensible.
The most common mistake in Idaho 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.
Pet-related eviction filings correlate with overall landlord-tenant litigation rates. View landlord risk and tenant-law profile by city:
This overview reflects Idaho law as of 2026, drawing on the Fair Housing Act (42 U.S.C. 3601 et seq.) and HUD assistance-animal guidance, the Idaho Human Rights Act (Idaho Code Title 67, Chapter 59), Idaho Code 6-321 (security deposits), and Idaho Code 18-5811A (assistance-animal misrepresentation). It is general information for rental-housing owners, not legal advice. Fair-housing determinations turn on specific facts, and assistance-animal accommodation is heavily fact-driven; consult a qualified Idaho attorney or the Idaho Human Rights Commission before denying a request or withholding a deposit.
No. Under the federal Fair Housing Act and the Idaho Human Rights Act, an ESA is an assistance animal, not a pet, so you cannot charge a pet deposit, pet rent, or any pet fee for it. You may still recover the cost of actual damage the animal causes from the ordinary security deposit.
No. Idaho sets no statutory maximum on security deposits, and a pet deposit is legally part of the security deposit under Idaho Code 6-321. Because it is a deposit, it is refundable and cannot be withheld for normal wear and tear.
For a service animal whose need is not obvious, the ADA allows only two questions: whether the animal is required because of a disability and what task it is trained to perform. For an ESA, where the need is not obvious you may request reliable documentation from a qualified professional confirming the disability-related need. You cannot demand registration, certificates, or a specific form.
Yes. Idaho Code 18-5811A makes it a misdemeanor to misrepresent an animal or fake a disability to obtain benefits meant for people with disabilities. Under Idaho Code 18-113 a misdemeanor carries up to six months in jail, a fine up to $1,000, or both. You still cannot deny an accommodation on suspicion alone.
Under Idaho Code 6-321, you must refund the deposit within 21 days if the lease fixes no time, and in any event within 30 days after the tenant surrenders the premises. If you keep any portion, you must provide a written itemized statement of the deductions.
No. A no-pets policy does not apply to service animals or ESAs. You must make a reasonable accommodation under the Fair Housing Act and Idaho Human Rights Act, though the tenant remains responsible for any actual damage the animal causes.
Federal authority: 42 U.S.C. § 3604(f)(3)(B); 24 C.F.R. § 100.204; HUD FHEO Notice 2020-01. State authority: Idaho Code § 6-303. Last updated August 15, 2026. For informational purposes only, not legal advice. Pet and assistance-animal questions are highly fact-specific; consult a licensed Idaho attorney before refusing any request.
