Get Your ESA Letters Same Day — Backed by Licensed Illinois Professionals

No pet fees. No breed restrictions.
Illinois renters know the struggle — from Chicago high-rises with “no-pet” rules to suburban leases with extra deposits. That’s why we’ve made it simple for Illinois residents to protect their rights with a valid ESA letter issued by licensed local providers.
Now accepting HSA & FSA benefits cards — pay with your healthcare funds at checkout.
- 100% Money-Back Guarantee | HIPAA-Compliant | Licensed Illinois Mental Health Professionals

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Illinois ESA Letters: Protection for You and Your Pet
An ESA letter in Illinois gives you the legal right to live with your emotional support animal — even in housing where pets normally aren’t allowed. That means landlords must waive extra deposits, pet fees, or breed restrictions, so your animal can stay with you no matter their size, weight, or breed.
In Illinois, your ESA letter is only valid if it comes from a licensed local clinician. That’s why every Just Big Dogs provider is licensed in Illinois — so your letter is guaranteed to work.
Start Your Illinois ESA Wellness Assessment
Your First Step to Getting an ESA Letter in Illinois
Take the first step toward your ESA letter — quick, private, and backed by licensed Illinois mental health professionals.
- Takes less than 3 minutes
- Personalized results with instant insights
- Backed by qualified Illinois clinicians
Your free assessment will provide a personalized result — the same trusted framework our Illinois providers use to evaluate ESA eligibility.
🔒Your information is private. This assessment is not a diagnosis. A licensed Illinois provider will complete your evaluation.

From Chicago to Springfield, We Help All Illinois Pets Become ESAs
Whether you have a dog, cat, rabbit, or even a bird, we’ve got you covered. Our licensed Illinois professionals help all kinds of pets become certified emotional support animals, so you and your companion are legally protected in housing.

A Process You Can Trust — Designed for Illinois Pet Owners
Our Illinois ESA process is designed to be straightforward, private, and stress-free. Every evaluation is reviewed by a licensed Illinois professional — never automated — so you can feel confident knowing your rights are protected.

step 1: Take Your 3-Minute Wellness Assessment
Answer a short series of questions about your emotional wellness and daily challenges. This helps determine whether ESA support could be beneficial. It’s completely free to start, secure, and takes less than 3 minutes — no payment or account required.

step 2: Connect with a Licensed Illinois Professional
Once you choose your plan and make your payment, you’ll be matched with a licensed Illinois clinician who reviews your information personally. Your provider considers your answers carefully and makes a professional recommendation based on state and federal ESA guidelines.

step 3: Get Your ESA Letter Same Day*
If approved, your ESA letter will be issued by a licensed Illinois professional and delivered to you quickly and securely. Standard processing takes 24–48 hours, but same-day priority delivery is available at checkout for those who need it faster.
⏱ Over 90% of Illinois applicants finish in under 5 minutes — and most receive approval within 24 hours.
👉 ESA vs PSD: Which Is Right for You?
Both ESA and PSD letters protect your housing rights — but only a PSD letter also makes your dog a service animal with added benefits. Here’s how they compare:
Emotional Support Animal (ESA) Letter
🏠 Housing protections only (no public access or travel rights)
💌 Emotional support is the focus
🐾 No special training required for your dog
✅ Great if housing support is all you need
Psychiatric Service Dog (PSD) Letter
🏠 + ✈️ Housing and travel protections under ADA
🐕 Recognized as a service animal with public access rights
🎓 Dog should have (or be able to learn) basic training tasks
✅ Ideal if you want broader legal protections or public access
🔒 PSD upgrade available during checkout.
Real Pet Owners. Real Results. Real Peace of Mind.
Across Illinois, pet parents face unique challenges — from strict apartment rules in Chicago to rental restrictions in smaller towns across the state. Our ESA letters have helped thousands of Illinois residents keep their animals at home without fear of unfair pet fees or restrictions. Backed by licensed Illinois professionals, every letter provides the protection and peace of mind that pet owners deserve.
Illinois Pet Owners Benefit From An ESA Letter
Renting with pets in Illinois can be stressful — from strict “no-pet” clauses in Chicago apartments to additional deposits in suburban and rural housing. A valid ESA letter protects your right to live with your support animal, helping you avoid costly fees and ensuring landlords recognize your needs under housing law. With support from licensed Illinois professionals, you can keep your companion by your side no matter where in the state you live.
Avoid Extra Pet Costs
Save hundreds each year by eliminating unfair deposits and pet-related fees in Illinois housing.
Breed-Friendly Housing
From Pit Bulls to German Shepherds, your ESA letter protects against discriminatory breed restrictions.
Keep Your Companion Close
Illinois landlords must allow emotional support animals with a valid ESA letter under federal law.
Confidence & Compliance
Every letter is issued by licensed Illinois providers who understand state and federal protections.


Just big dogs was a great help to my family and my wife, Kathy. We are currently down the shore, with our dog Mika, May, because of the help of just big dogs. We are very grateful. Special shout out to Stephanie and the psychologist, and just big dogs legal team, who was relentless in their support.

“I was looking for an ESA letter because my dog is a big part of my life. Like a lot of people, I have been through different life changes and through it all, my dog has always been there. I wanted to make sure that wherever I go, he stays with me. When I came across Just Big Dogs it stood out. The process was simple, fast and it actually felt trustworthy. I was connected with a therapist in my state and everything just worked the way it should. I highly recommend it.”
“My landlord kept telling me no large dogs allowed, but with my ESA letter from Just Big Dogs, I was able to keep my German Shepherd in the apartment. The process was simple, the provider was professional, and everything was accepted without any issues.”
Just Big Dogs Was Built For You
Let’s be honest — every ESA company says they’re the best. We’re not here to argue with that. Maybe they are. We’re not focused on what anyone else is doing. We just want to tell you what we’re doing.
Our platform is focused on doing things the right way: licensed Illinois mental health professionals, same-day digital delivery options, and a real support team that treats you like a person, not a number. No shortcuts. Just a process you can trust.
What You Can Count On:
- Same-Day Delivery Options
- Licensed Illinois Providers
- HIPAA-Secure Platform
- Compassionate Support Team
- 100% Money-Back Guarantee
- Try us once. You'll see the difference.

Why Illinois Pet Owners Choose Just Big Dogs
Whether you’re renting in Chicago, Champaign, or a quiet town downstate, finding pet-friendly housing in Illinois can be stressful. That’s why so many Illinois residents rely on Just Big Dogs. Our process makes getting an ESA letter straightforward, legal, and supported by licensed Illinois providers who know the state’s housing challenges.
Clear, Simple Process
We guide you through each step so you know exactly what to expect — no confusing paperwork or guesswork.
Illinois-Based Licensed Professionals
Every evaluation is done by a clinician licensed in Illinois, ensuring your letter meets housing requirements across the state.
Continued Guidance When You Need It
Our team stays with you even after you receive your letter — offering support if landlords ask for verification or clarification.
Meet Our Licensed ESA Providers

Elena Borrelli DMS, M.S. PAC
Dr. Elena Borrelli is a Doctor of Medical Science and Physician Associate. She has been practicing clinically for 16 years. Her interests include patient advocacy, integrating telemedicine into medical education, and improving healthcare quality. She has years of experience diagnosing and managing behavioral health conditions, including anxiety, depression, and post-traumatic stress disorder. In her free time, Dr. Borrelli enjoys spending time with her family, which includes her dog Rocco.

Edna Lee, MA, LPC-S
My name is Edna Lee, MA, LMHC, LPC-S and I have been counseling since 2005 working with adults struggling with anxiety, depression, trauma, relationships and other life adjustments. I am thrilled to partner with Just Big Dogs to support people with their mental health using their ESA/PSA animals. I have seen the life changing impact of the collaboration of therapy and ESA/PSA animals help clients get their lives back. I am a Houstonian and love to spend time with my husband and 3 boys. I am a proud survivor of the heat!
What Customers Are Saying
Flexible Payment Options — We’ve got you covered. Pay the way that works best for you
All major credit & debit cards (Visa, Mastercard, AmEx, Discover)
Buy Now, Pay Later Options with Klarna or Affirm — split into 4 easy payments
HSA & FSA benefits cards — use your healthcare funds at checkout
ESA Letter Illinois - Frequently Asked Questions
If you’re an Illinois resident thinking about getting an ESA letter, you may wonder how it works, what it covers, and how landlords handle it. From downtown Chicago apartments with strict pet policies to student rentals in Champaign and suburban housing across Naperville, Aurora, and Springfield — ESA letters help Illinois pet owners protect their rights. Below are the answers to the questions we hear most often from people across the state.
An ESA letter is a signed recommendation from a licensed mental health professional confirming your need for an emotional support animal. In Illinois, this letter protects your right to live with your pet — even in housing that typically bans animals or charges high pet fees.
Yes. Every ESA letter is reviewed and issued by a licensed, qualified Illinois clinician, not a bot or template. Your letter comes directly from a real mental health professional who is qualified under Illinois and federal housing law.
Yes. As long as the evaluation is done by a licensed provider serving Illinois, an online ESA letter is valid. Federal housing protections apply whether your evaluation is in-person or virtual.
People experiencing conditions such as anxiety, depression, PTSD, or similar challenges may qualify. Your licensed Illinois provider will determine eligibility during your evaluation.
You’ll start with a short wellness assessment, choose your plan and make your payment, and then connect with a licensed Illinois professional. Once approved, you’ll receive your ESA letter securely by email — often the same day or within 24 hours. Same-day priority processing is available in Illinois.
A PSD (Psychiatric Service Dog) letter documents the need for a specially trained service dog that can perform specific tasks related to a mental health condition. This goes beyond ESA protection and can extend to air travel.
ESA letters allow your pet to live with you without housing discrimination or fees. PSD letters certify a trained service dog that performs tasks for your disability, offering broader legal rights.
Yes. Psychiatric Service Dogs (PSDs) must be trained to perform basic commands that directly assist with a mental health condition. Unlike ESAs, which provide comfort by their presence, PSDs need structured training to meet ADA standards. This training can be done by you or by a professional and to be valid, your dog needs to be trained or willing to train to perform these tasks.
You may qualify if you have a diagnosed mental health condition (such as PTSD, severe anxiety, or depression) and would benefit from a dog trained to perform specific tasks. An Illinois-licensed provider will make the final determination during your evaluation.
Our wellness assessment is the first step to see if ESA support may be right for you. It’s free, private, and designed to mirror what licensed Illinois providers consider during an evaluation. You’ll only pay if you choose to move forward with a professional review.
Once you complete the assessment, you’ll choose a plan, make your payment and be matched with a licensed Illinois clinician. They’ll review your responses, guide you through the process, and issue your ESA letter.
If you don’t qualify you won’t be charged. Our goal is to provide valid, compliant evaluations that protect you legally. Taking the assessment is the first step and will provide insights into whether you are an appropriate candidate or not.
That’s exactly what the assessment is for. Even if you’re uncertain, completing the process allows an Illinois provider to make a clear, professional determination.
Unlike quick letter mills, we connect you with licensed Illinois clinicians who know the state’s housing environment — from Chicago apartments to suburban HOA communities. Every letter is personalized, HIPAA-compliant, and backed by responsive customer care.
Yes. While dogs and cats are the most common, ESA letters can cover other animals if they provide emotional support. Landlords may request reasonable documentation if the animal is unusual.
Yes. ESA letters are typically valid for one year. To stay protected, you’ll need to renew annually with an updated evaluation.
Illinois landlords must make reasonable accommodations under the Fair Housing Act and they must accept valid ESA letters, even in “no-pet” housing. Airlines, however, no longer are required to accept ESA letters — only PSD letters qualify for air travel.
Yes. With a valid ESA letter, Illinois landlords must waive pet deposits, fees, and breed restrictions under federal housing law. This includes common restrictions on larger breeds like Pit Bulls or German Shepherds.
An Emotional Support Animal (ESA) provides comfort that helps with a mental health condition, but does not require specialized training. A Service Animal, such as a guide dog or Psychiatric Service Dog (PSD), is trained to perform specific tasks related to a disability and has broader legal access rights.
In many cases, you can receive your Illinois ESA letter the same day your evaluation is approved. If you choose priority processing at checkout, your letter can often be delivered digitally within hours as long as the mental health professional is available and you have processed your payment before 5pm ET. If not, your application will be pushed to the front of the line for next business day processing.
Same day digital delivery means that if you complete your ESA application and payment before 5pm ET, you can optionally upgrade to same-day delivery which puts your application to the front of the line. If the Illinois mental health professional is available, they will process your application the same day. And once your provider approves your evaluation, you can access a secure, digital copy of your ESA letter immediately — no waiting for the mail. This ensures you can show proof to your landlord right away.
Yes, in certain cases. If your licensed Illinois provider determines that more than one animal is necessary for your emotional support, they can include that in your documentation.
A service animal is trained to perform specific tasks for a person with a disability and is protected under the Americans with Disabilities Act (ADA). Emotional support animals are not task-trained but offer emotional and mental health benefits. ESA letters fall under housing protection — not public access. Psychiatric Service Dogs fall under the ADA and allow public access and travel rights.
Yes. ESA evaluations are often accepted as qualified mental health expenses. At checkout, you can pay using your Health Savings Account (HSA) or Flexible Spending Account (FSA) benefits card, just like you would with a regular debit or credit card.
It gives you more flexibility — allowing you to use pre-tax healthcare funds to cover your ESA evaluation instead of paying entirely out-of-pocket.
No. At this time, Medicare and Medicaid do not reimburse ESA evaluations in Illinois. You would need to pay with a standard payment method, or use an HSA/FSA card if available.
JustBigDogs.com is not the medical provider. We connect you with licensed Illinois professionals who perform your evaluation and, if you qualify, issue your ESA letter. Our role is to provide a safe, secure, and supportive platform for the process.
Start Your Illinois ESA Letter Today
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- 100% Risk-Free Guarantee — Licensed and Accepted in the state of Illinois
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