Lake County deadline tracker

Lake County 2026 assessment appeal deadlines

In Lake County, you don't get one countywide deadline. Each township publishes its assessment list in a local newspaper, then you generally have about 30 days to file with the Board of Review. City limits are not township lines — check your parcel.

How to use this tracker Find your township → note its status → if open, run a free estimate; if TBD, get an alert; if closed, review next-step options.
Open — You can still file for 2026. TBD — The assessment list is not published yet. Closed — The 2026 Board of Review window ended.

Verified against Lake County sources: September 30, 2026. Statuses use America/Chicago time.

Open for 2026 filing

6 townships
Open

Antioch Township

Deadline: October 19, 2026

19 days left. Published September 17, 2026 in the Lake County Journal.

Check my property
Open

Lake Villa Township

Deadline: October 5, 2026

5 days left. Published September 3, 2026 in the Lake County Journal.

Check my property
Open

Moraine Township

Deadline: October 5, 2026

5 days left. Published September 3, 2026 in the Highland Park News.

Check my property
Open

Newport Township

Deadline: October 5, 2026

5 days left. Published September 3, 2026 in the Lake County News-Sun.

Check my property
Open

Shields Township

Deadline: November 2, 2026

33 days left. Published October 1, 2026 in the Lake Forester.

Check my property
Open

Vernon Township

Deadline: October 26, 2026

26 days left. Published September 24, 2026 in the Buffalo Grove Countryside, Lincolnshire Review and Vernon Hills Review.

Check my property

Publication date still TBD

0 townships

2026 filing window closed

12 townships
Closed

Fremont Township

2026 window closed: September 28, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window
Closed

Grant Township

2026 window closed: September 14, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window
Closed

Libertyville Township

2026 window closed: September 21, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window
Closed

Warren Township

2026 window closed: September 8, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window
Closed

Wauconda Township

2026 window closed: September 14, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window
Closed

Waukegan Township

2026 window closed: September 8, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window
Closed

West Deerfield Township

2026 window closed: September 14, 2026

Review record corrections, exemptions, and preparation for the next filing cycle.

See options if you missed the window

Deadline alerts

Get an email when a TBD township publishes

Choose one or more townships. We'll store your email and selections so a publication alert can be sent when the county posts the dates.

Official Lake County sources

Lake County assessment complaint deadlines are tied to township assessment publication dates. Lake County says property owners generally have 30 days after publication to file through SmartFile, and filing deadlines are fixed.

Disclaimer: HomeTaxChallenge is not a government agency and is not affiliated with the Lake County Assessment Office or Lake County Board of Review. Always confirm dates on the official county sources above. This is not legal, tax, or appraisal advice.