Cook County property tax
Elk Grove Township property tax appeal guide
Elk Grove Township filing window
This cycle's filing windows have passed for Elk Grove Township.
Check your Elk Grove property freeWhen were the calendar records checked?
- Cook County Assessor: last retrieved .
- Board of Review: last retrieved .
These are separate source retrievals, not editorial reviews or a guarantee that filing is open. A published source date can be older than its retrieval date. Missing dates do not mean there is no deadline.
Elk Grove Township covers more area than the village that shares its name. Its North Triad reassessment occurred for 2025, and the next is scheduled for 2028. Because the assessment calendar follows the township rather than the municipality in a mailing address, owners should confirm the township; a Board of Review window opens for Elk Grove Township every year.
Cities and villages in Elk Grove Township
Property addresses in Elk Grove Township most often list these cities:
- Mount Prospect — 6,214 single-family parcels (37% of this township's single-family parcels)
- Elk Grove Village — 5,274 single-family parcels (32% of this township's single-family parcels)
- Des Plaines — 2,771 single-family parcels (17% of this township's single-family parcels)
- Arlington Heights — 1,968 single-family parcels (12% of this township's single-family parcels)
- Rolling Meadows — 383 single-family parcels (2% of this township's single-family parcels)
A city can span more than one township, so confirm your township on your assessment notice or the Cook County Assessor's site.
Recent home sales in Elk Grove Township
From August 11, 2024 through August 11, 2026, the comparison pool contains 1,031 recorded single-family sales.
- Median sale price: $440,000
- Middle-half sale price range (25th–75th percentile): $375,000–$530,000
- Median sale price per square foot: $287
- Median building size: 1,486 square feet
- Median year built: 1963
These are recorded single-family sales used as comparison evidence, not an estimate of any home's value.
Evidence to review
- Read the land and improvement portions of the property record separately so a lot-size issue is not confused with a building-size issue.
- For homes near commercial or industrial uses, note whether a proposed comparable has the same type and degree of exposure.
- Check the transfer history behind each candidate sale and set aside transactions whose circumstances make the recorded price less informative.
- If an addition changed the home's footprint or utility, gather records that show when it was completed and compare properties with similar finished space.
To check property facts on the county map, follow our CookViewer property comparison walkthrough. Keep assessment values separate from recorded sale prices.
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.
Other North Triad townships
Related guides
- Cook County property tax appeal evidence checklist — Organize records, sales comparisons, photos, and submission confirmations with a printable preparation checklist.
- How much could a Cook County property tax appeal save? — Work through an illustrative tax calculation and understand why an assessment reduction is different from a tax saving.
- Wrong square footage on your Cook County assessment? — Verify property measurements, document a record error, and prepare a correction request with an evidence checklist.
- Why are my neighbor’s property taxes lower in Cook County? — Separate assessments from exemptions, compare similar homes, and work through a neighbor comparison before appealing.
- Cook County property tax appeal after buying a home — Assessment higher than your purchase price? Compare the figures, gather closing documents, and check your appeal window.
- How to use CookViewer to compare Cook County properties — Find the official map, compare property facts, and keep assessment figures separate from recorded sale prices.
- Why did my Cook County property tax bill go up? — Work through annual totals, assessment changes, exemptions, and tax rates before choosing your next step.
- How to read your Cook County assessment notice — Understand the numbers, verify your property facts, and turn your notice into an evidence checklist.
- Missed your Cook County property tax appeal deadline? — Find out which window closed, check the other appeal office, and prepare for what comes next.
- Assessor appeal vs Board of Review appeal — Understand the two appeal offices, their separate calendars, and the evidence each reviews.
- How to find comparable sales — Review a hypothetical sales comparison and print a blank research worksheet.
- How to appeal without a lawyer — Gather evidence, check your township window, and file directly with Cook County.
- Cook County property tax exemptions: are you missing one? — Check which exemptions apply, renew automatically, or need annual filing.
- What happens after a Board of Review appeal? — Understand PTAB's role after a Board of Review decision and its filing instructions.
- How to find your Cook County PIN — Find your 14-digit PIN on county records and use it for filings and research.
- Cook County property tax appeal research guide — See how property records and comparable sales can support an assessment appeal.
Guide revision dates describe changes to this guidance. County calendar retrievals are shown separately above; confirm filing dates with the office receiving your appeal.