Cook County property tax
Lake Township property tax appeal guide
Your township: Lake
Cook County Assessor
Deadline: October 29, 2026 · 40 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 ↗
Lake Township's Assessor appeal window is open now through October 29, 2026.
File with the Cook County Assessor · $0 filing fee ↗County calendar updated September 15, 2026.
Although Lake Township became part of the City of Chicago through annexation in 1889, Cook County continues to use it as an assessment township. Its City Triad reassessment occurred in 2024, and the next is scheduled for 2027. The Board of Review provides a Lake Township filing window each year.
Recent home sales in Lake Township
From July 13, 2024 through July 13, 2026, the comparison pool contains 8,709 recorded single-family sales.
- Median sale price: $250,000
- Median sale price per square foot: $181
- Median building size: 1,190 square feet
These are recorded single-family sales used as comparison evidence, not an estimate of any home's value.
Evidence to review
- Start by checking whether the Assessor lists the correct class, residential type, building area, and number of units.
- Compare like with like when reviewing the township's mix of single-family homes, two- to six-flats, and condominiums.
- Favor recent recorded transfers from the subject's assessment neighborhood whose physical characteristics align closely with the property.
- Label condition photos with their dates and connect each image to the specific repair or defect it documents.
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.