Illinois Attorney Review Period: What Sellers Should Expect
What happens during the Illinois attorney review period?
In most Illinois residential sales, the contract you sign isn't final until attorney review ends. That window typically lasts five business days, although your contract controls the exact length. During that time, each side's attorney can approve the contract, propose modifications, or in some cases cancel without losing earnest money. Sellers who prepare before they sign keep their deals intact when a modification letter lands.
By the Constellation Home Sales Team | October 12, 2026
You accepted an offer. You shook hands, signed the contract, and told your family it's sold. Then, two days later, your attorney calls and says the buyer's attorney sent a letter.
That moment catches Chicago-area sellers off guard constantly, and it's one of the most common questions we hear from Plainfield, Naperville, Orland Park, and Joliet sellers. It matters even more right now. Freddie Mac's 30-year rate was reported at roughly 7.4% as of October 8, the highest level since late 2023 and the seventh straight weekly increase. When financing gets more expensive, buyers and their attorneys get more careful about every line of the contract.
Here's how attorney review really works, what a modification letter can ask for, and how you respond without losing your buyer.
Why a signed contract isn't final yet
Illinois is an attorney-review state. In most residential deals, the standard contract makes the sale contingent on attorney approval for a set number of business days after both parties sign. Five business days is the common default, though the contract can say something different, so read yours.
During that window, three things can happen:
Both attorneys approve. The contract becomes binding and you move on to inspection, appraisal, and financing.
One attorney proposes modifications. A modification letter goes to the other side, and the negotiation continues.
One side cancels. Depending on the contract language and how the modifications are framed, a party may be able to walk away without losing earnest money.
There's also a quieter outcome. If an attorney does nothing and the period expires, the contract generally becomes binding on that client. Silence is not a safe strategy, so make sure your attorney is engaged from the first day.
Your attorney also matters beyond this window. In Illinois, attorneys typically represent buyers and sellers and run point on the closing, while the title company handles title insurance and escrow disbursement. Choosing a responsive attorney before you list is one of the simplest ways to protect your timeline. Many sellers also review our breakdown of seller costs in Chicagoland so the numbers don't surprise them at the table.
What a modification letter usually asks for right now
A modification letter is separate from the contract itself. It states what the buyer's attorney wants changed, and it should say whether the changes are a counteroffer. That distinction matters: if the letter is a counteroffer, you can end the contract by rejecting it. If it isn't a counteroffer, rejecting the changes doesn't automatically cancel the deal.
Here's what we see most often in 2026:
Inspection items. Buyers often use the attorney review period and inspection together, so repair requests, credits, or a request to extend the inspection window show up here.
Mortgage commitment deadline. With rates climbing, buyers ask for more time to lock a rate and secure a commitment. A longer deadline helps them. It also keeps your home off the market longer.
Earnest money amount or terms. Some buyers ask to reduce the deposit or change when it's due.
Closing date and possession. Fall closings that slide toward the holidays create real scheduling pressure for movers, utilities, and your own purchase.
Tax proration language. If your home sits in a reassessed township, the buyer's attorney may want specific language on how you handle the final bill. Our guide to Cook County tax tips for southwest suburb sellers explains why this matters this year.
Here's a hypothetical example. Picture a Plainfield seller who accepts an offer on a Friday. The inspection happens Monday, and the buyer's attorney sends a modification letter Wednesday asking for a $4,000 credit, a 10-day longer mortgage commitment deadline, and a closing date three weeks later. Each request on its own is reasonable. Together, they shift roughly a month of risk onto the seller. The seller who answers within a day, trades the credit for the original closing date, and agrees to a shorter extension often keeps the deal and the schedule.
None of these requests means the buyer is walking. Most are routine. However, a long list of changes, especially several at once, is a signal worth reading carefully.
How to respond without losing the buyer
One more point on timing: rates have moved up for seven straight weeks, so a buyer who signed at a lower rate last month may now be worried about affordability. That doesn't make them a flight risk. It does mean the mortgage commitment deadline is the clause most likely to come back changed. Ask your agent early whether the buyer's preapproval is solid and whether they've already locked a rate. A buyer with a locked rate and a full preapproval rarely needs much more time.
Treat the letter as a negotiation, not an insult. Here's the approach we walk our clients through:
Call your attorney the same day. Five business days goes fast. A day of delay can force an extension you didn't want.
Sort the requests into three buckets. Those you can say yes to, those you can trade, and those you refuse. A fast yes on small items builds goodwill for the bigger ask.
Check the request against your price. If you priced the home well, you have room to negotiate. If you chased an inflated number, you have less leverage. Our post on pricing your home right in the southwest suburbs covers how pricing shapes this moment.
Know your backup. If a second buyer or a cash offer exists, your position changes. See whether cash offers are worth it for Bolingbrook sellers for how to weigh that.
Get every agreement in writing. Verbal promises about repairs or credits don't survive a closing table. Your attorney should confirm any extension or change in a signed document.
Watch the clock. If you can't finish in five business days, ask for a written extension before the period expires rather than after.
The mistakes that cost sellers deals
Three errors show up again and again. First, sellers ignore the letter for a day or two while they decide how they feel about it, and the clock runs out. Second, they treat every request as a demand and counter everything, which turns a cooperative buyer into a defensive one. Third, they agree to an open-ended extension, which leaves the buyer free to walk while you stay locked in. A short, written, dated extension protects you. An open-ended one only protects them.
If you're locked into a low rate on your next purchase or weighing a move, our article on selling with a low mortgage rate in the southwest suburbs can help you think through the timing too.
What to do before you sign
The smartest work happens before the contract exists. When we list a home, we prepare the seller for this window:
Complete the Illinois Residential Real Property Disclosure Report accurately. Under the Residential Real Property Disclosure Act, it's a 23-question statement of known material defects, and honest answers reduce surprises later.
Gather paperwork on roof age, major repairs, and permits so you can answer questions quickly.
Line up your attorney before the first showing, not after the first offer.
Decide ahead of time what you'll concede on inspection items and what you won't.
Know your minimum net, so a counteroffer doesn't catch you guessing.
Preparation also protects your next move. Many of our sellers are buying again, whether across town, in a different price range, or in Northwest Indiana, where closings follow a different process through a title company instead of attorney review. If your purchase and sale run on different clocks, a delay in one can put the other at risk. Build your timeline backward from the date you need to be out, and share it with your attorney before you negotiate anything. That context lets your attorney choose which requests are worth fighting over and which are cheaper to grant. A well-built timeline is often worth more than a few hundred dollars of credit.
Preparation turns a stressful five days into a routine one. Sellers who do this rarely lose a deal to a modification letter.
Frequently Asked Questions
How long is the attorney review period in Illinois?
Five business days is the common default in Illinois residential contracts, starting after both parties sign. Your contract controls the exact length, and the parties can agree in writing to extend it.
Can a buyer back out during attorney review?
In many cases, yes. If the contract is contingent on attorney approval, either side's attorney may be able to cancel within the window, depending on the contract language and how any modifications are framed. Ask your attorney how your specific contract reads.
What happens if the attorneys can't agree in five business days?
The parties usually extend the review period in writing while they keep negotiating. If nobody extends it and the period expires without a cancellation, the contract may become binding as written, so confirm the status with your attorney before the deadline.
Does attorney review replace the home inspection?
No. The inspection is a separate contingency, though the two often overlap in time. Repair requests from the inspection frequently arrive inside a modification letter.
Who pays the attorney in an Illinois home sale?
Each side generally pays its own attorney, and fees vary by firm and complexity. Confirm the fee structure with your attorney before you sign anything, and ask what's included.
Now that you know a signed contract isn't the finish line, don't wait for a modification letter to find out whether your terms hold up. Text or call 630-912-9129 and I'll review how your contract handles attorney review, the mortgage commitment deadline, and inspection credits, so you know your move before the letter arrives.
About the Constellation Home Sales Team
The Constellation Home Sales Team — Steve Roake and Kimberly Genovese — has closed more than 615 transactions worth over $113 million across Chicago's southwest suburbs and Northwest Indiana. Licensed since 2003 and operating under Keller Williams Preferred Realty, the team specializes in probate and estate sales, expired listings, negotiation, and divorce and life-transition sales, with a track record of selling homes at 101% of list price against a 97.7% MLS-wide average. Connect with the team at freedomgroupglobal.com or 630-912-9129.
