Why your exemption disappeared
Title changes, missed renewals, and deaths. All three are fixable, often retroactively.
A bill arrives noticeably higher, the assessed value has barely moved, and the exemption line that was there last year is not. This is common, it always has a cause, and it is usually fixable — sometimes retrospectively.
The causes, most likely first
1. A renewal was missed
Some exemptions renew automatically and some do not. The ones that do not are generally the income-tested or condition-tested ones:
| Exemption | Typically renews automatically? |
|---|---|
| General homestead | Usually yes |
| Senior homestead | Varies by county |
| Senior assessment freeze | No — annual application |
| Persons with disabilities | Usually annual |
| Veterans with disabilities | Varies; a rating change requires updating |
2. The property changed hands
An exemption belongs to the owner, not the property. It comes off when they leave. A new owner must apply, and a new-construction buyer has nothing to inherit because the builder never claimed one.
3. Title changed without the property changing hands
Moving into a trust, adding a spouse after a marriage, removing a name after a death or divorce. Any of these can appear to the county as a change of ownership.
4. Occupancy changed, or appeared to
The general homestead exemption requires the property to be your principal residence. Renting it out ends it. So can a mailing address change that suggests you live elsewhere — an entirely innocent one, such as directing post to a second home.
5. Income moved above a ceiling
For the freeze and other income-tested benefits. You can requalify later, though the freeze resets to the current value rather than restoring the old base.
6. An administrative error
It happens. Offices process very large volumes and exemptions are dropped by mistake.
What to do
- Compare last year's bill against this year's, line by line, to confirm which exemption vanished.
- Call the assessor's office and ask why. They can see the reason and will normally tell you.
- Re-apply if it is a renewal or ownership issue.
- Ask about prior years. This is the step people skip. If the exemption came off in error, or you were entitled and did not claim, several Illinois counties allow correction for prior years through a certificate of error — with a refund of the tax overpaid. It is not advertised. Ask explicitly.
Why this matters more than an appeal
A Cook County general homestead exemption removes $10,000 of equalised assessed value — around $750 a year. The median successful appeal is worth about $570, and only 23% of appeals succeed.
A missing exemption is a larger loss than a lost appeal, and unlike an appeal it can often be recovered for years already paid.