Statute of Repose in Illinois: Construction, Product, and Medical

The statute of repose in Illinois is a hard outer deadline for filing certain lawsuits that runs from the defendant’s act rather than from the day you discovered you were harmed. In the most common categories, that deadline is ten years for construction claims, twelve years for product liability claims, and four years for medical malpractice. Once the repose period ends, the claim is gone, even if the defect only surfaced yesterday and even if the ordinary statute of limitations would otherwise still be running.

How a Repose Deadline Differs From a Limitations Deadline

People use “statute of limitations” and “statute of repose” as if they meant the same thing. They don’t, and the difference decides cases.

A statute of limitations starts running when you discover your injury, or when you reasonably should have. Illinois gives you two years from that discovery date for a personal injury claim.¹ The clock is tied to what the plaintiff knew.

A statute of repose starts running at the defendant’s last relevant act, regardless of whether anyone has been injured yet. Your awareness is irrelevant. And courts cannot extend a repose period on fairness grounds. The U.S. Supreme Court has held that statutes of repose reflect a legislative decision to impose an absolute time bar that overrides judicial authority to toll deadlines equitably.² Doctrines that can pause a limitations period, such as the discovery rule or a plaintiff’s disability, don’t pause a repose period unless the legislature wrote the exception into the statute itself.

Construction Claims: Ten Years

The construction repose period is the one Illinois residents encounter most often. Under 735 ILCS 5/13-214, no lawsuit on any legal theory can be brought against anyone involved in designing, planning, supervising, or building an improvement to real property more than ten years after the act or omission that caused the problem.³ The clock starts at the act itself, not when a building owner notices cracking walls or water intrusion.

Inside that ten-year window sits a four-year statute of limitations. You have four years from when you knew or reasonably should have known about the defect to file suit.⁴

There is one built-in safety net. If you discover a defect before the ten-year window closes, you get a guaranteed four years from that discovery to file, even if those four years run past the ten-year mark.³ Discover a defect in year nine, and you have until year thirteen. Discover it in year eleven, and you have nothing.

The consequence is stark. A homeowner who buys a ten-year-old building and finds serious structural problems a year later has no claim against the original builder under this statute, no matter how bad the workmanship was. The line is bright.

Product Liability Claims: Twelve Years, or Ten From First Use

Strict product liability claims have their own repose period under 735 ILCS 5/13-213. No such action may be filed more than twelve years from the date the product was first sold, leased, or delivered by any seller, or more than ten years from the date it was first delivered to its initial end user, whichever expires first.⁵ A product that sat in a warehouse for five years before reaching a consumer would hit the twelve-year deadline from first sale before the ten-year deadline from delivery to the end user.

If the manufacturer or seller expressly warranted the product for a longer period, the claim survives for the length of the warranty.⁶

If the product was altered, modified, or changed after its original sale, a separate ten-year repose period runs from the date of that modification. The statute defines “alteration” broadly, reaching changes to design, function, instructions, and warnings, as well as failure to properly maintain the product.⁵

Medical Malpractice Claims: Four Years

Medical malpractice claims against physicians, dentists, registered nurses, and hospitals carry a much shorter repose period. Under 735 ILCS 5/13-212, no action arising out of patient care may be brought more than four years after the act or omission alleged to have caused the injury or death.⁷ Within that four-year cap, a two-year statute of limitations runs from the date you knew or should have known about the injury.

Slow-developing injuries are the hardest cases. A surgical error that produces no symptoms for five years is outside the repose window, and the claim cannot be pursued no matter how clear the negligence was.

The rules are more generous for children. If the patient was under eighteen when the malpractice occurred, the repose period extends to eight years from the act or omission, but never past the patient’s twenty-second birthday.⁷ If the patient had a legal disability other than being a minor at the time, the limitations period does not begin to run until the disability is removed, though the statute specifies that this tolling does not override the repose provisions.

Exceptions That Can Extend or Eliminate the Deadline

Illinois statutes of repose are absolute only until the legislature says otherwise. Each of the following exceptions exists because a specific statute created it.

Fraudulent Concealment

The broadest exception applies when a defendant actively hides the problem. Under 735 ILCS 5/13-215, if a person liable for a claim fraudulently conceals the cause of action, the injured party may file within five years of discovering the claim.⁸ Construction claims go further. Section 13-214(e) states that the repose period does not apply at all to claims arising out of fraudulent misrepresentations or fraudulent concealment.³

The Illinois Supreme Court applied this carve-out in Henderson Square Condo. Ass’n v. LAB Townhomes, LLC. A condo association alleged that the developer concealed serious construction defects; the lower court dismissed the claims as time-barred under the ten-year repose period. The Supreme Court reversed, finding that questions of fact remained about whether the developer’s silence about known deficiencies amounted to fraudulent concealment under Section 13-214(e).⁹ Proving fraudulent concealment requires showing the defendant intentionally hid the defect, not merely that the defect was hard to find.

Minors and Persons Under Legal Disability

Under 735 ILCS 5/13-211, a person who was under eighteen or under a legal disability when the cause of action arose may file within two years after turning eighteen or after the disability is removed.¹⁰ The construction statute has a parallel provision at Section 13-214(c): the repose period does not begin to run until the minor turns eighteen or the disability is removed.⁴ Medical malpractice uses the separate eight-year rule for minors described above, capped at age twenty-two.

Express Warranties

Both the construction and product liability statutes contain warranty exceptions. If the defendant expressly warranted or promised the improvement or product for a period longer than the statutory repose period, the claim survives for the length of that warranty.⁶

Asbestos

The construction repose period does not apply to claims for personal injury, disability, disease, or death caused by asbestos discharged into the environment. Section 13-214(f) carves these out, because asbestos-related diseases often take decades to appear.⁴

Federal Law Does Not Save Environmental Claims

One boundary worth naming, because plaintiffs sometimes assume otherwise: CERCLA does not rescue a claim from an Illinois repose deadline. In CTS Corp. v. Waldburger (2014), the U.S. Supreme Court held that 42 U.S.C. 9658, which preempts state statutes of limitations for hazardous substance claims, does not preempt state statutes of repose.¹¹ Illinois’s repose deadlines remain intact for contamination claims brought under federal environmental law.

What This Means in Practice

The repose clock runs whether you know it or not, and that creates real traps. A buyer who purchases a nine-year-old building has less than a year of repose protection left on construction claims. A consumer using industrial equipment delivered twelve years ago has no strict-liability claim against the manufacturer, even if the machine was defective from the start. These are the fact patterns that generate dismissals.

If you suspect a claim, investigate early. In construction and medical contexts, the clock is measured from someone else’s conduct, not from your discovery of harm, and equitable arguments will not save a late filing. Preserve records of construction dates, product delivery dates, warranty terms, and medical treatment dates for at least the length of the applicable repose period.

For defendants in these industries, the statute of repose delivers genuine finality once the deadline passes. The exception is fraudulent concealment: a contractor who knows about a defect and stays quiet can lose the protection the statute was designed to provide.

1
Illinois General Assembly. Illinois Code 735 ILCS 5/13-202 – Personal Injuries
2
Supreme Court of the United States. California Public Employees Retirement System v. ANZ Securities Inc.
3
Illinois General Assembly. Illinois Code 735 ILCS 5/13-214 – Construction Design Management and Supervision
4
Justia Law. Illinois Code 735 ILCS 5/13-214 – Construction Design Management and Supervision
5
Illinois General Assembly. Illinois Code 735 ILCS 5/13-213 – Product Liability
6
Justia Law. Illinois Code 735 ILCS 5/13-213 – Product Liability
7
Illinois General Assembly. Illinois Code 735 ILCS 5/13-212 – Physician and Hospital Malpractice
8
Justia Law. Illinois Code 735 ILCS 5/13-215 – Fraudulent Concealment
9
Justia. Henderson Square Condo Assn v. LAB Townhomes LLC
10
Illinois General Assembly. Illinois Code 735 ILCS 5/13-211 – Minors and Persons Under Legal Disability
11
Cornell Law Institute. CTS Corp v. Waldburger