ESA letter in Illinois: 2026 rules and how to qualify

Illinois ESA rules at a glance

This summary reflects Illinois law and federal guidance as of October 8, 2026. Rules change, so check the linked sources before relying on them for a dispute.

What Illinois law requires for an ESA letter

A housing provider may require documentation only when the disability or need is not readily apparent or known; it must be in writing, come from a person with a therapeutic relationship (a physician or other medical professional, a mental health service provider, or a non medical service agency or reliable third party with actual knowledge), and describe the disability related need, and sellers of certificates or letters who make no meaningful assessment do not qualify. Providers may verify authenticity and may offer a standard form but cannot deny a request only because it was not used, and may not charge pet deposits or fees. The Act sets no relationship period, license location rule or misrepresentation penalty.

Source: Assistance Animal Integrity Act, 310 ILCS 120 (P.A. 101-518), effective Jan. 1, 2020. Read the source.

How HUD's 2026 change affects Illinois renters

On May 22, 2026, HUD's fair housing office announced it will find reasonable cause in animal accommodation complaints only when the animal is individually trained to perform disability related tasks, and it withdrew its older ESA guidance. The Fair Housing Act itself, HUD's regulation at 24 CFR 100.204 and your right to bring a private lawsuit within two years did not change.

Illinois renters have an extra layer of protection: The Act defines assistance animal as an emotional support or service animal that qualifies as a reasonable accommodation under the federal FHA or the Illinois Human Rights Act, so the IHRA is a separate basis. Fisher Phillips (June 2026) lists Illinois among states whose laws independently protect ESAs.

If your dog is trained to perform tasks, a psychiatric service dog evaluation may suit you better, because trained animals keep HUD's presumption of reasonableness.

How to get an ESA letter in Illinois

Start with the free assessment. It takes about 5 to 10 minutes. Choose your evaluation, pay once through Stripe, and a licensed mental health professional who can practice in Illinois reviews your answers and talks with you by phone or video when Illinois rules or their judgment call for it.

Most clients hear from their clinician within one business day. When an ESA is clinically appropriate, the signed letter usually arrives by email within 24 to 72 hours of the evaluation.

Your letter lists the clinician's license number, type, issuing state and effective date, so a landlord can check it on the state licensing board website. If your completed assessment is not approved, you receive a 100% refund.

ESA letter cost in Illinois

Pet ESA Service charges the same one time price in Illinois as everywhere else: $89 for one pet, $109 for two, $129 for three and $149 for four. Renewal evaluations are $79 and psychiatric service dog evaluations are $99. There is no subscription, no rush fee and no charge for landlord verification. See the pricing page for what each evaluation includes.

Be cautious of "free ESA letter" offers and instant certificates sold to Illinois residents. A registry listing or ID card is not clinical documentation, and several states say landlords may reject them.

Pet fees and deposits for ESAs in Illinois

Illinois bars pet deposits and pet fees for assistance animals (310 ILCS 120). You remain responsible for any damage your animal causes.

Where to get help in Illinois

If a housing provider denies a reasonable request, you can contact the Illinois Department of Human Rights about filing a complaint under state law, consult a local fair housing organization, or speak with an attorney about a private Fair Housing Act claim, which generally must be filed within two years.

Keep copies of your request, your letter and every reply. Our guides on talking to your landlord and what landlords can ask walk through each step.