Cook County property tax
Barrington Township property tax appeal guide
Your township: Barrington
Cook County Assessor
Deadline: September 23, 2026 · 4 days remaining Official Cook County Assessor source ↗
Board of Review
Current dates are not verified here. Check the official source. Official Board of Review source ↗
Barrington Township's Assessor appeal window is open now through September 23, 2026.
File with the Cook County Assessor · $0 filing fee ↗County calendar updated September 15, 2026.
Barrington Township covers more area than the village that shares its name, and the assessment calendar follows the township rather than the municipality in a mailing address. The township, one of the county's smaller townships by recent sales volume, was reassessed for 2025 and is next scheduled for 2028. A Board of Review window opens for Barrington Township every year, including the years between reassessments.
Evidence to review
- Confirm the township in the county record before collecting evidence, because the place name in a mailing address does not establish the assessment calendar.
- If only a small set of neighborhood sales is available, rank the candidates by physical similarity and sale date rather than choosing on price alone.
- For an older recorded sale, check whether later changes to the land or building limit what that transaction can demonstrate.
- Review the Assessor's land and improvement entries independently, including the dimensions and features used for each proposed comparison.
Official sources
Cook County Assessor calendar · Cook County Board of Review appeals
You file directly with Cook County for free. We provide optional research, not representation or guaranteed savings.
Editorial guidance reviewed 2026-09-19. Filing dates are checked separately.