Cook County property tax
Northfield Township property tax appeal guide
Northfield Township filing window
Next window: the Assessor and Board of Review each open once a year; check your property now so you're ready.
Check your Northfield property freeNorthfield Township covers more area than the village that shares its name. Because the assessment calendar follows the township rather than the municipality in a mailing address, the township's North Triad cycle controls: it was reassessed for 2025 and is next scheduled for 2028. A Board of Review window opens for Northfield Township every year, including non-reassessment years.
Recent home sales in Northfield Township
From July 13, 2024 through July 13, 2026, the comparison pool contains 1,597 recorded single-family sales.
- Median sale price: $834,000
- Median sale price per square foot: $355
- Median building size: 2,472 square feet
These are recorded single-family sales used as comparison evidence, not an estimate of any home's value.
Evidence to review
- Anchor the comparable search in the subject's assessment neighborhood instead of assuming the place name in a mailing address defines the relevant area.
- Separate teardown-era rebuilds and substantially expanded homes from older houses whose original size and construction remain largely intact.
- Account for traffic exposure, proximity to commercial uses, or other site influences when weighing a sale on an otherwise similar lot.
- Reconcile the Assessor's living-area, basement, and bathroom details with available property records before presenting a 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.