Whether the dwelling coverage on your policy would actually rebuild your house — and what a shortfall costs you at claim time. Planning estimate only, not an appraisal.
Your renewal jumped and the carrier said 'rates went up.' Here is what is actually driving it, how to tell whether yours outran your state's, and the four levers that genuinely move the number.
Flood and earth movement are excluded from every standard homeowners policy — and the clause that excludes them is written so a wind-and-water loss can be denied entirely. Here is what is out, and what fills each gap.
Non-renewed, cancelled, or declined: read the notice correctly, stop force-placed insurance, fix the reason code on it, and get the house insured again in 30 days.
The exact sequence to run when your house is damaged — mitigation, documentation, the claim call script, the adjuster visit, reading the estimate, and every escalation step in order.
Illinois guide
From Home Insurance in Illinois: What It Costs and What Actually Covers You
The most consequential number on your policy is your Coverage A limit, and the most common way it goes wrong is setting it to your home's market value or your mortgage balance.
Neither is right. Dwelling coverage should equal the cost to rebuild your home from the foundation up at today's construction prices. Market value includes land, which does not burn. Your mortgage balance is a financing number with no relationship to construction cost.
In Illinois this error runs badly in one direction, and it is worth being blunt about. Illinois's median home price is about $315,000. Illinois construction cost is about $260 per square foot. Those two numbers mean that across much of the state, it costs meaningfully more to rebuild an Illinois house than to buy one. A homeowner who insures to purchase price in Illinois is very often underinsured, not overinsured — the opposite of the mistake made in high-land-value states.
Rebuilding in Illinois runs roughly $260 per square foot — the midpoint of a published $200 to $320 band covering materials, labor, and general contractor overhead and profit, excluding land. That is the highest band of any Midwestern state in that source.
On a 2,000 square foot home:
Take the band seriously rather than the midpoint alone:
Now hold that against the $315,000 median home price. Even the bottom of the band exceeds the state's median sale price. That is the whole argument for getting an actual replacement-cost estimate on your specific home rather than working from what you paid.
Note what this figure is not. It is construction cost — materials, labor and contractor overhead to rebuild finished living area after a loss. It is not market value, and it is not the price per square foot of a home sale. Treating one as the other is the single most common way a replacement-cost estimate goes wrong. And no Illinois building department or insurance regulator publishes a competing rebuild-cost survey to narrow the band, so read it as a range.
Most homeowners policies contain a coinsurance provision requiring you to insure the dwelling to at least 80% of its full replacement cost. Fall below that threshold and the insurer does not merely cap your payout at your limit — it reduces every partial claim proportionally.
Work it on the example. Full replacement cost $520,000, so the 80% threshold is $416,000. Suppose you carry the $300,000 reference limit instead, and a hailstorm does $100,000 of damage. Your limit is three times the loss, so it feels safe. It is not:
You are roughly $30,000 short on a $100,000 loss well inside your policy limit. Two separate mechanisms — the coinsurance penalty and the percentage deductible — stacked on the same claim. Neither is visible until you file.
At a 2% wind/hail deductible the net drops to $66,115.
Read the full Illinois guide →17 min read · Updated 2026-08-28