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Barrington Township: Assessor window closed — Board of Review next
Barrington Township is bigger than the Village of Barrington: it also covers other places. Places with the most homes in Barrington Township: Barrington, South Barrington, Barrington Hills, Hoffman Estates, Inverness, Unincorporated areas.
The Assessor's window closed September 23, 2026.
Next: the Board of Review. Its dates for this township are not published yet; the Board opens townships in groups after the Assessor certifies them. You can appeal there even if you did not appeal to the Assessor.
Barrington Township 2026 dates
| Assessor notices mailed | August 11, 2026 |
|---|---|
| Assessor appeals open | August 11, 2026 |
| Assessor last file date | September 23, 2026 |
| Board of Review open | not published yet |
| Board of Review close | not published yet |
Sources: Assessor's assessment calendar, Board of Review dates page. Checked on October 2, 2026.
Was Barrington Township reassessed in 2026?
No. Barrington is in the north suburbs, which the Assessor is not reassessing in 2026. Here a property is reassessed only if there is a change due to division work, permit applications or other special circumstances; then the owner gets a Reassessment Notice.
You can still appeal in 2026. The Assessor's calendar lists Barrington with its own appeal window for this year.
Source: Assessor's calendar.
Barrington Township at a glance
- 6,441 residential (class 2) parcels, including 521 condominium units.
- Cities and villages with the most homes: Barrington (1,850), South Barrington (1,826), Barrington Hills (1,031), Hoffman Estates (772), Inverness (731), Unincorporated areas (230).
- Main ZIP codes: 60010, 60192.
Our calculation from Cook County open data (Assessor Parcel Universe), October 5, 2026. Townships, cities and ZIP codes overlap, so the address check is the reliable way to confirm yours.
Appeals in Barrington Township last year
For tax year 2025, 3,479 residential property appeals from Barrington Township were filed at the Board of Review, and 3,211 at the Assessor. Appealing is a routine step for many owners here.
Our count from Cook County open data (Board of Review Appeal Decision History, Assessor Appeals), counted by property, not official figures.
How to file in Barrington Township
- Confirm your PIN and township. Use the Assessor's address search or our free check below.
- Check the notice. The Assessor's rule of thumb: if the characteristics on your notice are correct and the estimated market value is within 10% of what you think your home is worth, an appeal is unlikely to change much. Wrong square footage, rooms or other characteristics are a reason to appeal.
- File online with the Assessor. On the county's online appeal site choose the residential appeal (or "Residential with Comparable Grid" if you argue lack of uniformity). The Assessor says filing is free and can take as little as 20 minutes, and that you don't need to hire anyone.
- Comparables are optional. Assessor analysts review similar homes themselves. You may attach up to 6 comparable PINs from your neighborhood that resemble your home in size and style.
- Board of Review is a second chance. When the Board opens Barrington, you can file there too (online, free). Individual owners may represent themselves; the Board's decision sets the final county value for the year.
More detail: how to appeal step by step · Assessor or Board of Review · choosing comparables.
What our packet adds
Filing is free and you can do it without us. If our free check says your home is assessed above similar homes, you can buy a document packet for $49: the comparable homes, the value to ask for, suggested text and step-by-step filing instructions for Barrington Township.
- One-time $49. No subscription and no share of your savings.
- Refund: if you file using the packet and the county does not lower your assessed value, send us the decision within 30 days and we refund the full price (terms).
- You file yourself on the county's site. We don't file or represent anyone, and no result is guaranteed.
Questions
What is the Barrington Township appeal deadline in 2026?
The Assessor's last file date for Barrington Township is September 23, 2026. The Board of Review has not published its dates for this township yet.
I missed the Assessor deadline. What now?
You can still appeal to the Board of Review when it opens your township, even if you did not appeal to the Assessor.
Should I appeal to the Assessor or the Board of Review?
You can do both. The Assessor's window comes first; the Board of Review is a separate agency and its decision sets the final county value for the year.
Was Barrington Township reassessed in 2026?
No. The north suburbs and the City of Chicago are not reassessed in 2026, except properties with division work, permits or other special circumstances. You can still appeal.
Can appealing raise my assessment?
Under Illinois law (35 ILCS 200/16-95) the Board of Review may not increase an assessment unless the owner is first notified in writing and given a chance to be heard.
I think I missed an exemption. Can I get it back?
Missed homeowner and other exemptions for past years can be requested from the Assessor through a Certificate of Error. The Assessor's page currently lists tax years 2021 to 2025 for the homeowner exemption.
Nearby townships
Sources
- Cook County Assessor — assessment calendar and deadlines
- Cook County Assessor — appeals overview
- Cook County Assessor — residential appeals
- Board of Review — 2026 township open/close dates (PDF)
- Board of Review — residential appeals
- Illinois Property Tax Code 35 ILCS 200/16-95
- Cook County Assessor — Certificate of Error
Dates last checked against the Assessor's calendar and the Board of Review's published dates on October 2, 2026. If anything here differs from the county's own pages, the county's pages win.