The general homestead exemption, and how it goes missing
The one nearly every Illinois owner-occupier gets — and the one that quietly falls off after a title change.
The general homestead exemption is the most valuable thing most Illinois homeowners can do about their property tax bill, and it is also the most commonly missing.
What it is
An owner-occupier exemption under 35 ILCS 200/15-175. It removes $8,000 of equalised assessed value in most Illinois counties and $10,000 in Cook County.
On an Illinois tax bill it usually appears as "Owner Occupied" rather than under the word homestead, which is one reason people look for it and conclude it is not there.
What it is worth
For comparison, the median successful Cook County appeal reduces assessed value by 8.4% — roughly $570 a year on a typical home. And only 23% of appeals succeed.
The exemption is worth more, is granted on an application rather than won on an argument, and does not depend on beating anyone.
Who qualifies
You must own the property and occupy it as your principal residence as of 1 January of the tax year. That is essentially the whole test — no income limit, no age requirement.
Why it goes missing
It does not transfer with the property. The previous owner's exemption comes off when they leave. Yours does not appear until you apply.
New construction is worse. A builder never claimed one, so there is nothing to inherit, and the first bill arrives with no exemption at all.
A change in how title is held. Moving the property into a trust, adding or removing a name after a marriage, divorce or death — any of these can require re-application.
Refinancing occasionally disturbs it in some counties.
Nothing tells you. A bill shows what you were charged, not what you could have been charged. The absence is invisible unless you look for it.
How to check in two minutes
- Find your most recent tax bill.
- Look for a line reading "Owner Occupied", "General Homestead", or "Homestead Exemption".
- If it is not there and you own and live in the property, you are probably owed it.
Your county's parcel search will usually also show which exemptions are applied.
How to fix it
Apply to your county — the Supervisor of Assessments outside Cook, the Assessor in Cook. It is a short form, usually available online, and it is not an appeal: different form, different process, and not governed by the 30-day appeal deadline.
Then ask the question most people do not: can this be applied to prior years? Several Illinois counties allow a missed exemption to be claimed retrospectively through a certificate of error, with a refund of the tax overpaid. It is not advertised. It is worth asking about explicitly, and it is frequently granted.
The one-line version
Before you spend a weekend building an appeal, spend two minutes checking whether the exemption you are already entitled to is on your bill. It is worth more than the appeal, and it is granted rather than argued.