Emotional Support Animal (ESA) Letters in Naperville, IL

The one line in the city code that names your animal

Search Naperville’s Municipal Code for “emotional support animal” and you get a single hit. It is in § 12-2-1, the definitions section of Title 12, and it reads badly for you. The code defines a “service animal” as an animal trained in obedience and task skills to meet the needs of a person with a disability, consistent with the Illinois Humane Care for Animals Act (510 ILCS 70), then adds that emotional support animals “shall not be included in this” definition.

Read cold, it looks like the city wrote your animal out of local protection.

It did not. The defined term does no work. “Service animal” is set out in § 12-2-1 and then never appears again — not in the rental chapter, not in the enforcement chapter, nowhere in Title 12. It is attached to no duty at all.

The duty that governs your request sits elsewhere, and it is written far wider.

Section 12-4-2 never asks what kind of animal it is

Title 12 is headed “Human Rights and Fair Housing.” Naperville adopted it by Ordinance 20-143 in December 2020 and amended it in May 2022. Its § 12-4-2 lists things an owner or manager may not do. One of them is refusing “to make reasonable accommodations in rules, policies, practices, or services if the accommodations are necessary for the person with a disability to use the housing.”

Look at what is absent. No species. No training standard. No cross-reference to that definition. The clause turns on rules and on need, and a no-pets clause is a rule.

Section 12-1-1 says who is covered, and physical or mental disability is on the list. So is legal source of income, which few Illinois municipalities protect locally. Title 12 calls itself consistent with, and in some cases more stringent than, the Illinois Human Rights Act and the federal Fair Housing Act.

Ninety days, and the ordinance uses the word “barred”

Put this sentence in your calendar. Section 12-5-1: a complaint “shall be barred from consideration by the Commission if it is not filed within ninety (90) days of the alleged unlawful act.”

Not “should.” Not “ordinarily.” Barred.

Ninety days is a quarter of the year Illinois gives you, and the count starts at the act: the day the leasing office said no, not the day you stopped trying to talk them round. Tenants lose this route by being patient.

Filing runs through the city’s fair housing office at 400 S. Eagle Street, on (630) 305-5315 or fairhousing@naperville.il.us. One wrinkle: the Commission’s own board page does not take complaints and sends you back to that fair housing page. Do not lose a fortnight of a ninety-day clock finding the live page.

The clocks still running after the city’s has stopped

Missing ninety days costs you the local forum, not the claim.

The Illinois Department of Human Rights will take a housing charge for one year after the violation was committed or terminated, 775 ILCS 5/7B-102(A)(1). And 775 ILCS 5/10-102(A) lets you sue in circuit court within two years, where either party may demand a jury and paragraph (3) says you may file whether or not you ever went to the Department.

If the landlord pushes back because you asked (a sudden inspection, a hint about the renewal, pressure to drop it), that is its own violation under 775 ILCS 5/3-105.1.

Why the state right never has to say “pet”

Naperville’s clause has a state twin. 775 ILCS 5/3-102.1(C)(2) makes it a civil rights violation to refuse reasonable accommodations in rules, policies, practices, or services when they may be necessary to give a person with a disability equal opportunity to use and enjoy a dwelling.

The Act does not contain the word “animal” anywhere. That is not an oversight. It operates on rules, and every barrier you are likely to hit in a Naperville lease is one: a blanket no-pets paragraph, a weight limit in a condo association’s rules, a second-animal surcharge typed in by the owner.

Disability, at 775 ILCS 5/1-103(I)(1), is a determinable physical or mental characteristic, and the Department of Human Rights repeats that on its housing rights page. Federal law sits alongside: 24 C.F.R. § 100.204 states the accommodation duty, and § 100.202(c) limits what a landlord may ask. HUD’s 2020 assistance-animal guidance was withdrawn effective September 17, 2025, so quote the regulations, never the guidance.

The support-dog statute is a wrong turn

Sooner or later someone points you at 775 ILCS 5/3-104.1. It is written about refusing to rent to a person who has a guide, hearing or support dog, and its subsection (C) bars an extra lease charge other than for actual damage the dog does. It sounds perfect.

Then read who it covers: a blind or hearing impaired person, or a person with a physical disability. If your animal answers anxiety, depression, PTSD or another mental health condition, that is not your section, and leading with it hands your landlord an easy way to say no. Lead with § 12-4-2 and 3-102.1(C)(2) instead.

There is no ceiling to appeal to, and no need for one

Naperville’s code has no pet deposit rule, no pet rent rule and no cap on a security deposit. Title 12 hands out rights and says nothing about money. Illinois sets no statutory maximum either. So a landlord here can charge a tenant with an ordinary pet whatever the local market bears, and plenty do.

For an approved assistance animal none of that matters, because the protection was never a number. Charging you for the animal is refusing the accommodation, and refusing the accommodation is what § 12-4-2 forbids. The fee fails for the same reason an outright “no” would. State law reinforces it: under 775 ILCS 5/3-102.1(C)(1), a customarily required security deposit may not be increased for a person with a disability.

After you move out, the receipts have to arrive

Approval covers the animal, not the carpet. Damage it actually does is yours.

How that money leaves your deposit is tightly controlled. 765 ILCS 710/1 gives the landlord 30 days to hand over an itemised statement of the damage with paid receipts attached, counted from the later of the day you vacate or the day your right of possession ends. No statement, and the whole deposit is due back inside 45 days. A circuit court that finds bad faith, or a flat refusal to itemise, awards double the deposit on top of costs and the attorney’s fees you ran up getting there.

That law once reached only buildings with five or more units. Public Act 103-224 struck those words effective January 1, 2024. In a city where so many rentals are single houses and small condo buildings, that did real work.

One home in four is rented, across two counties

Of Naperville’s 54,847 occupied homes, 13,827 are rented. That is a 25.2% renter share where the Illinois figure is 32.9%, on the Census Bureau’s 2020–2024 five-year estimates.

That shapes the experience. Much of the stock is scattered: a rented townhouse here, an owner’s condo there, rather than towers with a compliance department that has met this question a hundred times. You are more likely to be explaining § 12-4-2 to an individual owner than to a property manager.

The city also straddles a county line: 100,751 residents in DuPage County and 52,373 in Will. Title 12 follows the city limits and covers you either way. Free legal help does not, and your county decides who takes the call.

No office in this city approves an animal

Neither the Commission nor any Illinois agency certifies or lists assistance animals. Title 12 asks for no card, no vest and no certificate, because none of those exist in law. A site selling you a place on a national registry is selling something your landlord may bin, and a landlord who knows the rules will.

Federal rules at 24 C.F.R. § 100.202(c) do let an owner seek information showing you qualify for the accommodation. Answer that with documentation from a licensed provider who has examined you and can spell out how the animal bears on your condition. A current letter from a clinician who treats you turns a request into one § 12-4-2 obliges your landlord to consider.

Who to call on either side of the county line

Inside the ninety days, start with the city’s fair housing office. It runs intake for the Commission.

Prairie State Legal Services covers both counties, but from two separate offices: West Suburban for DuPage addresses and Joliet for Will ones. Check your county before you dial, or you will be transferred.

HOPE Fair Housing Center names DuPage among the counties it serves and works specifically on housing discrimination, a strong fit when the fight is squarely about the animal. The Illinois Department of Human Rights is the state door, with the one-year charge window and a housing rights page setting out disability as a protected basis.