Hanover Township property tax appeal guide

When were the calendar records checked?

• Cook County Assessor: last retrieved November 9, 2026 at 9:00 AM CST.
• Board of Review: last retrieved October 25, 2026 at 9:00 AM CDT. Dates are unverified; confirm with the official source.

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.

Cities and villages in Hanover Township

Property addresses in Hanover Township most often list these cities:

• Streamwood — 9,907 single-family parcels (47% of this township's single-family parcels)
• Elgin — 4,904 single-family parcels (23% of this township's single-family parcels)
• Bartlett — 3,237 single-family parcels (15% of this township's single-family parcels)
• Hanover Park — 1,718 single-family parcels (8% of this township's single-family parcels)
• Hoffman Estates — 1,538 single-family parcels (7% 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 Hanover Township

From August 11, 2024 through August 11, 2026, the comparison pool contains 1,433 recorded single-family sales.

• Median sale price: $340,000
• Middle-half sale price range (25th–75th percentile): $290,000–$424,990
• Median sale price per square foot: $234
• Median building size: 1,406 square feet
• Median year built: 1984

These are recorded single-family sales used as comparison evidence, not an estimate of any home's value.

Evidence to review

• When recent additions or newer rebuilds appear nearby, compare their construction year, finished area, and quality before using them against an older home.
• Check the Assessor record for bathroom count, basement finish, and attached or detached garage details that can separate otherwise similar houses.
• Use recent sales from the same assessment neighborhood, then screen for lot configuration and location influences rather than relying on distance alone.
• If the subject has incomplete work or deterioration, pair dated photographs with records that identify the affected area and scope.

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

• Wheeling Township
• Maine Township
• Schaumburg Township
• Palatine Township
• Northfield Township
• Niles Township
• New Trier Township
• Leyden Township
• Elk Grove Township
• Evanston Township
• Norwood Park Township
• Barrington Township

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.