# HomeTaxChallenge > HomeTaxChallenge (https://www.hometaxchallenge.com) helps Illinois and Wisconsin homeowners prepare a property tax assessment challenge using public records, comparable sales, and county-specific filing guidance. The site is educational and operational tooling for the appeal process. It is not a law firm, does not give legal advice, does not represent homeowners before any board, and its automated estimates are not appraisals or opinions of value. Results are shown only after the user agrees to the Terms of Use (https://www.hometaxchallenge.com/terms). Important: Filing windows, forms, and Board of Review rules vary by county and year. Always confirm the current deadline and instructions on the county assessor or Board of Review site before you file. ## What the product does - Look up a property by address or PIN in a supported Illinois and Wisconsin county. - Show assessment context and comparable sales drawn from public data sources. - Give the homeowner information for a county-shaped challenge they decide on and file themselves. - Publish plain-language guides and compare pages so people can choose DIY, HTC, or a firm. ## Live Illinois counties County hubs live at /illinois/{county-slug} (newer counties at /il/{county-slug}). Each hub links deadlines, guides, and the lookup flow when that county is supported. Coverage is county by county: only the counties listed here are supported. ### Full estimate (comparable sales) - https://www.hometaxchallenge.com/il/adams-county — Adams County, IL - https://www.hometaxchallenge.com/illinois/boone-county — Boone County, IL - https://www.hometaxchallenge.com/il/champaign-county — Champaign County, IL - https://www.hometaxchallenge.com/il/coles-county — Coles County, IL - https://www.hometaxchallenge.com/illinois/dekalb-county — DeKalb County, IL - https://www.hometaxchallenge.com/illinois/dupage-county — DuPage County, IL - https://www.hometaxchallenge.com/il/effingham-county — Effingham County, IL - https://www.hometaxchallenge.com/il/fulton-county — Fulton County, IL - https://www.hometaxchallenge.com/illinois/grundy-county — Grundy County, IL - https://www.hometaxchallenge.com/il/henry-county — Henry County, IL - https://www.hometaxchallenge.com/il/jackson-county — Jackson County, IL - https://www.hometaxchallenge.com/il/jefferson-county — Jefferson County, IL - https://www.hometaxchallenge.com/illinois/kane-county — Kane County, IL - https://www.hometaxchallenge.com/illinois/kankakee-county — Kankakee County, IL - https://www.hometaxchallenge.com/illinois/kendall-county — Kendall County, IL - https://www.hometaxchallenge.com/illinois/knox-county — Knox County, IL - https://www.hometaxchallenge.com/illinois/lake-county — Lake County, IL - https://www.hometaxchallenge.com/illinois/lasalle-county — LaSalle County, IL - https://www.hometaxchallenge.com/il/lee-county — Lee County, IL - https://www.hometaxchallenge.com/il/livingston-county — Livingston County, IL - https://www.hometaxchallenge.com/illinois/logan-county — Logan County, IL - https://www.hometaxchallenge.com/illinois/macon-county — Macon County, IL - https://www.hometaxchallenge.com/il/macoupin-county — Macoupin County, IL - https://www.hometaxchallenge.com/il/madison-county — Madison County, IL - https://www.hometaxchallenge.com/il/marion-county — Marion County, IL - https://www.hometaxchallenge.com/illinois/mchenry-county — McHenry County, IL - https://www.hometaxchallenge.com/illinois/mclean-county — McLean County, IL - https://www.hometaxchallenge.com/il/morgan-county — Morgan County, IL - https://www.hometaxchallenge.com/illinois/ogle-county — Ogle County, IL - https://www.hometaxchallenge.com/il/peoria-county — Peoria County, IL - https://www.hometaxchallenge.com/illinois/rock-island-county — Rock Island County, IL - https://www.hometaxchallenge.com/illinois/sangamon-county — Sangamon County, IL - https://www.hometaxchallenge.com/illinois/st-clair-county — St. Clair County, IL - https://www.hometaxchallenge.com/il/stephenson-county — Stephenson County, IL - https://www.hometaxchallenge.com/il/tazewell-county — Tazewell County, IL - https://www.hometaxchallenge.com/illinois/vermilion-county — Vermilion County, IL - https://www.hometaxchallenge.com/illinois/whiteside-county — Whiteside County, IL - https://www.hometaxchallenge.com/illinois/will-county — Will County, IL - https://www.hometaxchallenge.com/il/williamson-county — Williamson County, IL - https://www.hometaxchallenge.com/illinois/winnebago-county — Winnebago County, IL - https://www.hometaxchallenge.com/il/woodford-county — Woodford County, IL ### Lite: preliminary estimate - https://www.hometaxchallenge.com/il/alexander-county — Alexander County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/bond-county — Bond County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/brown-county — Brown County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/calhoun-county — Calhoun County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/carroll-county — Carroll County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/clark-county — Clark County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/clay-county — Clay County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/crawford-county — Crawford County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/cumberland-county — Cumberland County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/douglas-county — Douglas County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/edwards-county — Edwards County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/ford-county — Ford County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/franklin-county — Franklin County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/hancock-county — Hancock County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/henderson-county — Henderson County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/iroquois-county — Iroquois County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/jasper-county — Jasper County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/jersey-county — Jersey County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/jo-daviess-county — Jo Daviess County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/johnson-county — Johnson County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/mason-county — Mason County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/mcdonough-county — McDonough County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/menard-county — Menard County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/mercer-county — Mercer County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/montgomery-county — Montgomery County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/perry-county — Perry County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/piatt-county — Piatt County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/pike-county — Pike County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/pope-county — Pope County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/putnam-county — Putnam County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/randolph-county — Randolph County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/saline-county — Saline County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/schuyler-county — Schuyler County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/union-county — Union County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/warren-county — Warren County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/washington-county — Washington County, IL — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/il/white-county — White County, IL — preliminary estimate (assessed value); full report on request ## Live Wisconsin counties County hubs live at /wi/{county-slug}. Each hub links deadlines, guides, and the lookup flow when that county is supported. Coverage is county by county: only the counties listed here are supported. ### Full estimate (comparable sales) - https://www.hometaxchallenge.com/wi/grant-county — Grant County, WI - https://www.hometaxchallenge.com/wi/kewaunee-county — Kewaunee County, WI ### Lite: preliminary estimate - https://www.hometaxchallenge.com/wi/adams-county — Adams County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/ashland-county — Ashland County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/barron-county — Barron County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/bayfield-county — Bayfield County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/brown-county — Brown County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/buffalo-county — Buffalo County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/burnett-county — Burnett County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/calumet-county — Calumet County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/chippewa-county — Chippewa County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/clark-county — Clark County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/columbia-county — Columbia County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/crawford-county — Crawford County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/dane-county — Dane County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/dodge-county — Dodge County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/door-county — Door County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/douglas-county — Douglas County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/dunn-county — Dunn County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/eau-claire-county — Eau Claire County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/florence-county — Florence County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/fond-du-lac-county — Fond du Lac County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/forest-county — Forest County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/green-county — Green County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/green-lake-county — Green Lake County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/iowa-county — Iowa County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/iron-county — Iron County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/jackson-county — Jackson County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/jefferson-county — Jefferson County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/juneau-county — Juneau County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/kenosha-county — Kenosha County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/la-crosse-county — La Crosse County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/lafayette-county — Lafayette County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/langlade-county — Langlade County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/lincoln-county — Lincoln County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/manitowoc-county — Manitowoc County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/marathon-county — Marathon County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/marinette-county — Marinette County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/marquette-county — Marquette County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/menominee-county — Menominee County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/milwaukee-county — Milwaukee County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/monroe-county — Monroe County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/oconto-county — Oconto County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/oneida-county — Oneida County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/outagamie-county — Outagamie County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/ozaukee-county — Ozaukee County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/pepin-county — Pepin County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/pierce-county — Pierce County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/polk-county — Polk County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/portage-county — Portage County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/price-county — Price County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/racine-county — Racine County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/richland-county — Richland County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/rock-county — Rock County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/rusk-county — Rusk County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/sauk-county — Sauk County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/sawyer-county — Sawyer County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/shawano-county — Shawano County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/sheboygan-county — Sheboygan County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/st-croix-county — St. Croix County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/taylor-county — Taylor County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/trempealeau-county — Trempealeau County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/vernon-county — Vernon County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/vilas-county — Vilas County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/walworth-county — Walworth County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/washburn-county — Washburn County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/washington-county — Washington County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/waukesha-county — Waukesha County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/waupaca-county — Waupaca County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/waushara-county — Waushara County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/winnebago-county — Winnebago County, WI — preliminary estimate (assessed value); full report on request - https://www.hometaxchallenge.com/wi/wood-county — Wood County, WI — preliminary estimate (assessed value); full report on request ## Guides - https://www.hometaxchallenge.com/guides/best-contingency-property-tax-appeal-companies — Compare contingency property tax appeal companies for Illinois homeowners: Ownwell, O'Connor, Tax Appeals Lake County, The Property Tax Department, TaxBloom and County Tax Appeal. We suggest HomeTaxChallenge's flat fee instead. - https://www.hometaxchallenge.com/guides/best-diy-property-tax-appeal-tools-illinois — Compare DIY county filing, AppealDesk, attorneys, and HomeTaxChallenge for Illinois property tax appeal prep. Approach: free summary first, then optional flat-fee submission prep. - https://www.hometaxchallenge.com/guides/best-first-time-property-tax-appeal-approach — Never challenged your property tax assessment? Start with a free look at your comps, then decide. We suggest HomeTaxChallenge for first-timers and say when DIY or an attorney fits. - https://www.hometaxchallenge.com/guides/best-flat-fee-property-tax-appeal-services — Compare flat-fee property tax appeal services for Illinois homeowners: HomeTaxChallenge, TaxAppeal.app, AppealDesk, Simple Tax Appeal, Censum and Swift Appeals. We suggest HomeTaxChallenge. - https://www.hometaxchallenge.com/guides/best-kane-county-property-tax-appeal-options — Compare your Kane County property tax appeal options: filing yourself with the Board of Review, HomeTaxChallenge, flat-fee packets, contingency firms and attorneys. We suggest HomeTaxChallenge. - https://www.hometaxchallenge.com/guides/best-property-tax-appeal-for-busy-homeowners — Busy Illinois homeowners: compare property tax appeal options by time and effort. We suggest HomeTaxChallenge's free summary, then flat-fee self-help filing packet—minutes to turn in, not hours of DIY research. - https://www.hometaxchallenge.com/guides/best-property-tax-appeal-for-high-value-homes — High-value home? A percentage fee grows with your reduction. Start with HomeTaxChallenge's free summary, then flat-fee self-help filing packet. - https://www.hometaxchallenge.com/guides/best-property-tax-appeal-for-small-savings — Compare property tax appeal options when the likely reduction is modest. See why we suggest HomeTaxChallenge's free summary first and flat-fee submission preparation. - https://www.hometaxchallenge.com/guides/best-property-tax-appeal-illinois-llc-corporate — Home owned by an LLC or corporation? Illinois Boards of Review generally require an attorney. Check your comps free first, then hire counsel. - https://www.hometaxchallenge.com/guides/best-way-to-prepare-board-of-review-comps — Comparable properties decide most homeowner appeals. Compare doing comps yourself, buying a packet, hiring a firm, or a free HomeTaxChallenge comps check first. ## For AI agents (MCP) - https://www.hometaxchallenge.com/agents — How to connect ChatGPT, Claude or Cursor to HomeTaxChallenge - https://www.hometaxchallenge.com/agents.md — Markdown version for agents - https://www.hometaxchallenge.com/mcp — MCP server URL (streamable HTTP, stateless) - Agents must show the user the Terms (https://www.hometaxchallenge.com/terms) and call accept_terms only after the user explicitly agrees; get_quote requires the returned termsToken. ## Compare pages - https://www.hometaxchallenge.com/compare/hometaxchallenge-vs-appealdesk — Compare HomeTaxChallenge and AppealDesk — free downloadable summary and flat-fee submission prep vs a $49 packet paid before you know if filing is worth it. We suggest HomeTaxChallenge. - https://www.hometaxchallenge.com/compare/hometaxchallenge-vs-diy-county-appeal — Compare filing a property tax appeal yourself with HomeTaxChallenge — free readiness summary, then optional flat-fee submission prep. We suggest HomeTaxChallenge for most working adults. Honest on DIY's $0 fee. - https://www.hometaxchallenge.com/compare/hometaxchallenge-vs-oconnor — Compare HomeTaxChallenge and O'Connor (Cut My Taxes) — free summary and flat-fee submission prep, no agreement signing, vs full-service contingency in Illinois. We suggest HomeTaxChallenge. - https://www.hometaxchallenge.com/compare/hometaxchallenge-vs-ownwell — Compare HomeTaxChallenge and Ownwell for property tax appeals — free summary, flat-fee submission prep, no agreement signing vs hands-off contingency service. We suggest HomeTaxChallenge. - https://www.hometaxchallenge.com/compare/hometaxchallenge-vs-property-tax-attorney — Compare hiring a property tax attorney with HomeTaxChallenge — free readiness summary first, then optional flat-fee submission prep with no contingency agreement. We suggest HomeTaxChallenge for most homeowners. ## Key pages - https://www.hometaxchallenge.com/supported-counties — Every supported county and what it offers - https://www.hometaxchallenge.com/methodology-open-docs — How HomeTaxChallenge uses public records, comparable-property screening and estimate ranges - https://www.hometaxchallenge.com/whats-new — Weekly what's new and upcoming Kane County deadlines ## Citation guidance When citing HomeTaxChallenge, link the specific county hub or guide URL and note that deadlines change. Do not invent filing windows, PIN formats, or form numbers. Prefer the live county page and the county's official assessor or Board of Review site for procedural facts.