State Rep. Jay Hoffman, D-Swansea, called mine subsidence "a frustrating challenge for homeowners in our area" when describing the law he just got signed. He's right about the frustration. He's less specific about where it actually shows up, and that's the part worth understanding before you sign anything on a Collinsville property.
Here's the assumption most buyers walk in with: Collinsville sits over old coal workings, so mine subsidence insurance is mandatory, so it's handled. Check the box, move on. That's true as far as it goes. What it skips is the part that actually complicates a closing: subsidence damage doesn't resolve on a schedule that matches a real estate transaction, and the insurance follows the claim, not the current owner, unless somebody does the paperwork to make it follow the sale. Illinois just passed a law that changes the cost of getting that paperwork wrong. It didn't remove the need to do it.
Coverage Is Automatic. The Claim History Isn't.
Collinsville is one of the specific communities mapped as sitting over known underground mine workings, alongside Belleville and Fairview Heights nearby. Because Madison County, where Collinsville sits, is one of the 34 Illinois counties where most underground mining occurred, state law requires insurers to build mine subsidence coverage into residential and commercial property policies automatically. You'd have to sign a written waiver to reject it. Most homeowners don't, and most never think about it again.
The part that surprises people is how long these events actually run. Ground movement from a mine subsidence occurrence can continue for a decade or more, and Illinois law treats all the damage from a single occurrence, or from several continuous occurrences, as one claim. That's not a hypothetical. A 2025 engineering study on secondary surface subsidence used the Dorris School campus in Collinsville as a documented case of a site built over closed mine workings that continued to see ground movement long after the mining itself ended. Old mines don't stay settled just because decades have passed.
Why the Claim, Not the Coverage, Is Where Deals Get Complicated
This is the mechanism that catches people off guard. Because a subsidence event can outlast the length of time most people own a house, a meaningful number of Collinsville-area homes get bought and sold while an insurance claim on the property is still technically open. When that happens, the payout ceiling isn't reset for the new owner. It's fixed to the amount of coverage that was in force at the moment the damage was first reasonably observable, minus whatever has already been paid out to the seller or any prior owner.
In plain terms: if you buy a home where the seller already collected a settlement for subsidence damage, you don't start with a fresh policy limit. You inherit whatever is left of the original one, and if it's exhausted, repairs are on you.
The tool that's supposed to prevent this from being a surprise is called an Assignment of Claim Rights. It's a legal document, typically drafted by an attorney, that transfers the seller's remaining rights to a claim over to the buyer at closing. The Illinois Mine Subsidence Insurance Fund recommends buyers request several things from a seller before closing when a claim history exists: a letter from the insurer confirming ground movement has stopped, the insurer's estimate of repair costs, and paid bills showing any repairs were actually completed. None of that shows up automatically in a standard purchase agreement. Somebody has to ask.
What Changes on January 1, 2027
The law Hoffman sponsored, House Bill 5376, passed the Illinois Senate 58-0 and was signed by Governor Pritzker this year. It modernizes a statute that dates back to the Fund's creation in the late 1970s, and two changes matter directly to anyone buying or selling in Collinsville's undermined footprint.
| Before January 1, 2027 | Starting January 1, 2027 | |
|---|---|---|
| Deductible on covered subsidence damage | Applies, per policy terms | Eliminated for policies issued or renewed on or after this date |
| Covered costs | Structural repair to the insured structure | Also includes debris removal, moving and storage of contents, and repair or replacement of landscaping |
| Premium rate-setting | Historical Fund methodology | Fund must weigh the same factors a private insurer would reasonably use |
Removing the deductible is a real dollar benefit for a homeowner filing a claim after that date. It does not touch the claim-transfer problem described above. A house with an open claim from 2024 doesn't get a cleaner history because the deductible rule changed in 2027. If anything, the new law raises the stakes of getting the paperwork right, because a fully reinsured, deductible-free claim is worth more to preserve accurately at the point of sale than a partial one was before.
The Region's Own Track Record
Metro East's subsidence history isn't limited to houses. In Shiloh, subsidence damage at the Dierbergs Green Mount Crossing retail plaza was serious enough that village officials committed roughly $8 million toward remediation. In Fairview Heights, the $4.7 million U.S. Ice Sports Complex closed in 2012 because of subsidence damage. In Swansea, cracks that appeared in a Wolf Branch School District 113 middle school forced administrators to weigh repair against relocating the building entirely. None of this means every Collinsville property is at risk of the same scale of damage. It does mean the pattern is documented, recurring, and close enough to home that "it probably won't happen to my house" isn't a data-backed position in this specific market.
Before You Sign Anything
If you're buying or selling in Collinsville, treat mine subsidence history the way you'd treat any other material fact that affects value, not as a box the insurance company already checked for you.
- Ask the seller directly whether a subsidence claim has ever been filed on the property, and request the paid claim history in writing. The Mine Subsidence Disclosure Act requires sellers to disclose paid insurance claims for mine subsidence at the time an agreement to transfer the property is made.
- Check question 17 on the Illinois Residential Real Property Disclosure Report, which specifically addresses mine subsidence. Sellers must disclose material defects they actually know about.
- If a claim history exists, ask an attorney about drafting an Assignment of Claim Rights before closing rather than after.
- Request the insurer's letter confirming ground movement has ended, along with repair estimates and paid invoices if repairs were made.
- If you're PCSing into the area on a tight timeline, build in the extra week or two this due diligence takes. It's not something a rushed closing schedule handles well, and orders don't wait for a claim history to sort itself out.
A Few Straight Answers
Does the new law apply to a claim that's already open? The deductible elimination applies to policies issued or renewed on or after January 1, 2027. A claim tied to an occurrence that began under an earlier policy is still governed by the terms in force when the damage was first observed.
Do I need to buy mine subsidence coverage separately in Collinsville? No. In Madison County, coverage is built into property insurance policies automatically. You'd have to sign a waiver to opt out.
What if neither I nor the seller knows whether the property was ever undermined? The Illinois State Geological Survey maintains mine maps you or your agent can check, though older maps vary in accuracy since much of the early mining wasn't formally documented. Asking the seller and neighbors about any history of ground movement is still one of the more reliable sources of information available.
Mine subsidence isn't a reason to avoid buying in Collinsville. It's a documented feature of the ground under a lot of good homes in this part of the Metro East, and Illinois built an entire insurance and disclosure system around managing it. The system works when the paperwork keeps pace with the sale. That's the part worth getting right, and it's exactly the kind of detail an agent who works this specific market should be walking you through before you're at the closing table, not after.
If you're relocating to Collinsville on a PCS timeline or planning a move here for any reason, Veterans PCS Group can connect you with a vetted, military-experienced agent who already knows how this market works. Find an Agent to get started.
