Illinois Diminished Value Claims
What Illinois Drivers Need to Know
Whether the crash happened on the Kennedy Expressway in Chicago, in Naperville, or out in Peoria or Springfield, the same rule applies once the repairs are done: a vehicle with an accident on its record is worth less than one that never had a claim filed against it, no matter how good the bodywork looks. Illinois law lets you recover that gap from the at-fault driver's insurer, treating it as part of the overall property damage claim rather than a separate bonus. You have five years from the accident to bring the claim — one of the longer windows among neighboring states, but not a reason to delay building your file. For a deeper walkthrough, see our diminished value claim guide.
If your vehicle was declared a total loss instead of being repaired, see Illinois total loss appraisals. For what our report includes and what it costs, see our diminished value report service.
Every report is prepared using our Premier Market Comparison Method, built on real world market data and structured for insurance review.
Illinois Diminished Value at a Glance
We team up with you to provide clear, accurate diminished value guidance and documentation you can confidently use with insurers or in court.
Five-Year Filing Window
Illinois allows five years from the date of the accident to pursue a diminished value claim.
Filing Against the At-Fault Driver
Diminished value claims can be pursued against the at fault driver’s liability insurance when another driver caused the accident.
Your Own Policy: Sometimes, Through UMPD
Most first party policies in Illinois exclude diminished value, but uninsured motorist property damage (UMPD) coverage may apply if you carry it.
Illinois Small Claims Cap: $10,000
Illinois small claims court allows diminished value claims up to $10,000.
Understanding Diminished Value in Illinois
What diminished value is, what drives the amount, and what a Illinois claim needs before it goes to the insurer.
What Is Diminished Value?
Diminished value is the difference between what your vehicle was worth before the accident and what it is worth after repairs. Even quality repairs leave an accident on the vehicle history report, and buyers typically pay less for a vehicle with that history.
What Affects the Amount
- Vehicle age and mileage
- Severity of the damage
- Structural repairs
- Prior accident history
- Local market conditions
What You Need to File in Illinois
- Completed repairs and the final repair bill
- The accident report
- Market-based documentation of the loss in value
How Insurers Review a Claim
Carriers use different approaches, from internal formulas to comparable market data. A report built on comparable vehicles with and without accident history gives the adjuster market evidence to review.
How Illinois Courts Have Ruled on Diminished Value
Illinois courts addressed this issue decades ago, and the rule has held up: repair costs alone don't capture the full financial harm when a vehicle's market value doesn't fully bounce back.
Trailmobile Division of Pullman, Inc. v. Higgs, 12 Ill. App. 3d 323 (1973)
The Illinois Appellate Court held that when damaged personal property is repairable, damages include both the reasonable cost of repairs and any remaining gap between the property's pre-injury market value and its post-repair value. If the repaired property is still worth less than before, that residual loss counts as compensable damage.
Start Your Illinois Diminished Value Claim
Independent, market-based diminished value report — $299 flat fee. Every claim is reviewed before you pay.
Illinois Diminished Value: Common Questions
Below are answers to common questions about Illinois diminished value claims, including how claims work, time limits, and how loss in market value is calculated after an accident.
Does Illinois allow diminished value claims?
Yes. When another driver is responsible for an accident, Illinois law permits a third-party diminished value claim against them.
I wasn't at fault — who do I file against?
The at-fault driver's insurer. Illinois runs on a fault-based system, so their carrier can be held responsible for diminished value in addition to repair costs.
Can I go after my own insurer instead?
Only in limited cases — generally you'd need first-party diminished value coverage written into your policy.
What determines how much the claim is worth?
There's no required Illinois formula. The standard approach is a market comparison of similar vehicles to establish the real-world resale impact.
What's the deadline to file?
Five years from the date of the accident under Illinois's statute of limitations for property damage. The deadline is set by 735 ILCS 5/13-205.
Do insurers pay out on these without a dispute?
Usually not without documentation. Detailed evidence of market impact is what moves these claims forward.
Do I need an appraisal for an Illinois diminished value claim?
It isn't required, but an independent, market-based report documents the loss in a format insurers can review.
Still have a question?
Our diminished value claim guide provides additional information about diminished value claims and what vehicle owners can expect from the process.
If your accident occurred near a neighboring state, the rules surrounding diminished value may be different. You can also review claims in Wisconsin, Indiana, Kentucky, Missouri, and Iowa.