Illinois

ESA Letter in Illinois: Requirements, Laws & How to Get One

Last updated April 2026 · 6 min read

Illinois follows the federal Fair Housing Act baseline with no separate ESA-letter statute, supplemented by the Illinois Human Rights Act and (for Chicago tenants) the Chicago Residential Landlord and Tenant Ordinance. If you live in Chicago, Aurora, Naperville, Joliet, Rockford, Springfield, Peoria, or anywhere else in the state, this guide explains how to get an Illinois ESA letter and how to use it with your landlord.

Illinois ESA law in plain English

Illinois has no analog to California's AB 468 or Florida's 760.27. The federal FHA governs ESA accommodations, and Illinois layers on the Illinois Human Rights Act (775 ILCS 5/), which prohibits housing discrimination based on disability and requires reasonable accommodation. Chicago tenants have additional protections under the Chicago RLTO.

The standard for an ESA accommodation in Illinois: a licensed health-care professional issues a letter stating that the tenant has a qualifying disability and that the named animal is necessary for the tenant's well-being. The housing provider must grant the accommodation and may verify the letter directly with the issuing clinician.

Standard turnaround

Illinois applications follow our two-hour standard turnaround. An Illinois-licensed mental health professional reviews your file and signs the letter if the clinical criteria are met.

Your housing rights in Illinois

Your landlord must allow your ESA in your unit, regardless of pet policy
Pet rent and pet deposits cannot be charged for the ESA
Breed restrictions and weight limits do not apply
Condo associations and HOAs must grant reasonable accommodation
Chicago tenants benefit from additional anti-retaliation protection under the RLTO

Illinois cities served

Chicago / Cook County (Lakeview, Wicker Park, Lincoln Park, Hyde Park, Logan Square, Pilsen, Bronzeville)
Suburban Cook County (Evanston, Oak Park, Skokie, Cicero, Berwyn)
Northwest suburbs (Schaumburg, Arlington Heights, Palatine)
West suburbs (Aurora, Naperville, Wheaton, Lombard)
South suburbs (Joliet, Orland Park, Tinley Park)
Downstate (Springfield, Peoria, Champaign-Urbana, Bloomington, Rockford, Decatur)

Specific Illinois concerns

Chicago RLTO and ESA accommodations

The Chicago Residential Landlord and Tenant Ordinance (RLTO) provides some of the most tenant-favorable rules in the country. While the RLTO does not directly create an ESA accommodation right (that comes from the FHA), it does create strong anti-retaliation protections that apply when a tenant exercises a fair-housing right. If your Chicago landlord retaliates after you submit an ESA accommodation request — refusing to renew, raising rent above market, harassing — this may trigger RLTO penalties on top of FHA remedies.

Cook County breed restrictions

Many Cook County apartment buildings — particularly in suburban areas — have aggressive breed restrictions, often targeting pit bulls, Rottweilers, German shepherds, Doberman pinschers, and Akitas. These breed restrictions do not apply to a documented ESA. If your ESA is a restricted breed, the FHA accommodation preempts the breed policy.

Condo associations in Chicago

Many Chicago high-rise condo buildings have aggressive pet rules — weight limits (often 25-40 pounds), breed restrictions, monthly pet fees. These rules do not apply to documented ESAs. The condo board may verify the letter with the issuing clinician, and our letters include the contact information for that purpose.

Illinois winters and ESA accommodation

Illinois winters present unique challenges for ESA owners. Many older Chicago buildings have small or no outdoor spaces, and walking dogs in -15°F weather creates real welfare issues. While not a legal requirement, many ESA owners install indoor relief solutions during winter — and landlords cannot impose pet-specific rules that effectively prevent the ESA from living with the tenant.

Chicago notes: The City of Chicago licenses dogs separately and requires registration. ESA designation does not exempt your dog from the licensing requirement, but the licensing fee (typically $5-50/year depending on spay/neuter and senior status) is not something your landlord can charge or use against you.

How to apply

Click "Get Started" and create your account.
Choose your package — Essential ($99), Signature ($199), or Platinum ($499).
Complete the pet information and clinical questionnaire.
Pay through Stripe.
An Illinois-licensed clinician reviews and signs (typically within two hours during business hours).
Download your signed letter from your secure dashboard.

Apply for Your Illinois ESA Letter

Illinois-licensed mental health professional. FHA + Illinois Human Rights Act compliant. Two-hour standard turnaround.

Get Started — $99

What if my Illinois landlord rejects the letter?

Request the rejection in writing with the specific reason.
Coordinate with us to verify the letter directly with your landlord.
If unresolved, file a complaint with the Illinois Department of Human Rights (state-level) or HUD's Region V office (federal).
Chicago tenants can also file with the Chicago Commission on Human Relations.
Consider consulting an Illinois tenant-rights attorney. The Lawyers' Committee for Better Housing and the Sargent Shriver National Center on Poverty Law both assist with Illinois fair-housing matters.

Common Illinois questions

Does my Illinois condo association have to accept my ESA? Yes. Condo associations are housing providers under the FHA and the Illinois Human Rights Act and must grant reasonable accommodation when documentation is in order.

Can my Chicago landlord raise my rent because I requested an ESA accommodation? No. This would be retaliation under both the FHA and the Chicago RLTO. Document any rent increase that follows an accommodation request.

What if I'm in a small Illinois town with limited landlord options? The FHA applies in small towns just as it does in Chicago. A landlord with four or more rental units (or any landlord using a real estate broker) is covered. Owner-occupied buildings of three or fewer units may be exempt under the "Mrs. Murphy" exception.

Does the letter work for student housing at U of I, Northwestern, or other Illinois universities? Most university housing falls under FHA coverage. Some universities have their own ESA processes; check with your housing office, but our letter generally satisfies their requirements.

This page is for informational purposes only and does not constitute legal advice. Illinois law changes; consult an Illinois-licensed attorney for guidance specific to your situation.