Island Lake property assessments
Lake County, Illinois — from the county's own assessment roll.
The typical parcel above the line carries $4,496 of assessed value more than the median for like-classified land in Island Lake, where that median works out at about $1.54 per square foot of land.
roughly 1 in 4 Island Lake properties is assessed above its local median. Whether yours is one of them takes a few seconds to find out — the comparison runs against the same 1,949 assessed parcels shown above.
Check my Island Lake address →
Free to check. Nothing is filed on your behalf, and a verdict of "not worth appealing" is the answer we return most often.
Deadline
30 days from the publication of your township's assessment roll in the local newspaper. The window is short and it is not the same date across the county. Confirm it against your own notice — a late filing cannot be cured.
How to check your own
Type your Island Lake address and you get the verdict, the comparison and the arithmetic — free, without an account. If it says there is nothing there, it says so: roughly a third of properties get told not to file.
Check your Island Lake address
Three things you can run right now, free
A genuine run against a real Illinois property, generated when you open the page — the verdict, the comparable parcels, and every step of the arithmetic. Nothing to type.
The parcels the county's own records describe the same way as yours — same class, same town, same size — and what each of them is assessed.
More than one property in Island Lake? Paste up to 1,000 PINs and get the whole book ranked by what an appeal is actually worth — including which ones to drop.
← All of Lake County · How an Illinois assessment is calculated