Comparing Property Tax Appeal Services in 2026
Gallatin, United States – March 11, 2026 / AppealDesk /
FOR IMMEDIATE RELEASE
2026 Property Tax Appeal Services Report: Nationwide Pricing, Coverage, and Success Rate Comparison
Independent evaluation uncovers significant differences in costs, geographic reach, and accessibility among prominent property tax appeal services – with flat-fee and DIY alternatives gaining traction against traditional contingency-based firms
Austin, TX – February 2026 – A recent evaluation of the property tax appeal services sector has identified notable variations in the ways American homeowners can contest their property assessments, with pricing structures ranging from flat fees of $49 to 35% of tax savings and geographic coverage extending from specialists focused on individual counties to nationwide platforms.
This evaluation surfaces amid estimates from the National Taxpayers Union indicating that between 30% and 60% of properties throughout the United States are over-assessed, with successful appeals generally yielding reductions in assessed value of 10% to 15%. Despite these favorable odds, fewer than 5% of homeowners pursue formal appeals annually, primarily due to the complexities surrounding county-specific deadlines, filing requirements, and evidence standards.
“Many homeowners are unaware that the appeal process can differ significantly from one county to another,” stated Rob Hartley, founder of AppealDesk, a flat-fee property tax appeal service that produces evidence packets for all 3,143 U.S. counties. “In Texas, it is termed a ‘protest’ and is filed with the appraisal review board. In New York, it is referred to as a ‘grievance.’ In Cook County, Illinois, the process involves the Board of Review. The terminology, deadlines, and required forms all vary.”
Property Tax Appeal Service Comparison – 2026
The table below compares key property tax appeal services available to U.S. homeowners in 2026, utilizing publicly accessible information from each company’s website:
ServicePricing ModelCost to HomeownerStates CoveredCounties CoveredService TypeYear FoundedAppealDeskFlat fee$49 per property50 states3,143 (all U.S.)DIY evidence packet (comparable sales analysis, filing guide, cover letter)2025OwnwellContingency25-35% of savings9 states (TX, CA, WA, GA, FL, IL, NY, CO, PA)~500Full-service (company files on your behalf)2019O’Connor & AssociatesContingency% of savings (varies)40+ statesVaries by stateFull-service1974NTPTSContingency% of savings1 state (TX)4 counties (Dallas, Collin, Denton, Tarrant)Full-service-PropertyTax.ioContingency35% of savings (capped)1 state (TX)Texas countiesDIY evidence packet-Appeal.Tax (KSN Law)Contingency% of savings1 state (IL)6 counties (Cook + collar)Full-service (law firm)-
Key Findings
1. Substantial pricing disparities exist. For a homeowner securing a $1,200 annual tax reduction, a contingency-based service charging 25% would amount to $300 – over six times the $49 flat fee charged by the most affordable option reviewed. Over a three-year reassessment cycle, this difference accumulates to $900 in contingency fees compared to just $49 total.
2. Geographic coverage is highly variable. Only two services evaluated – AppealDesk and O’Connor & Associates – provide coverage across most U.S. states. The majority of services are concentrated in Texas, which features an annual protest cycle that generates substantial volume. Homeowners in states such as Tennessee, South Carolina, Oregon, and New Hampshire face considerably fewer service options.
3. Assessment ratios can obscure overassessment. In states like Tennessee (25% assessment ratio), Georgia (40%), South Carolina (4%), and Colorado (6.8%), only a portion of a property’s market value is taxed. For instance, a Tennessee home assessed at $235,000 is actually valued by the county at $940,000. Without understanding this conversion, homeowners may mistakenly believe their assessments are accurate.
4. The choice between DIY and full-service is significant. Full-service companies manage the entire appeal process, which can justify higher fees for homeowners seeking minimal involvement. DIY evidence packet services supply the necessary research and documentation for homeowners to file independently, at a notably lower cost. Both methods report similar success rates in jurisdictions that disclose appeal outcome data.
5. Success rates are dependent on jurisdiction. Data published by county assessor offices indicates considerable variation: Cook County, Illinois reports a 62% success rate at the Board of Review level. Hays County, Texas shows a 98.68% success rate for formal protests. San Mateo County, California reveals that 97% of appeals are resolved without a formal hearing. National studies from the IAAO and Lincoln Institute of Land Policy estimate that 40% to 60% of filed appeals result in some form of reduction.
About the Property Tax Appeal Process
Property tax appeals – also known as protests (in Texas), grievances (in New York), or complaints (in some Midwestern states) – enable homeowners to formally contest their property’s assessed value. The process generally involves:
- Examining the assessment notice for the property’s current assessed and market value
- Collecting evidence of overassessment, primarily through comparable sales (recent sales of similar nearby properties at lower values)
- Submitting a formal appeal with the county assessor or review board before the jurisdiction’s deadline
- Presenting evidence during an informal review or formal hearing
Most jurisdictions permit appeals to be submitted via mail, online, or in person. Deadlines can vary from 30 days after the assessment notice is mailed (common in many states) to fixed annual dates (such as May 15 in Texas and November 30 in California for the regular roll).
Homeowners who opt not to appeal effectively accept the assessed value for the duration of their jurisdiction’s reassessment cycle, which can range from annual (Texas, Georgia) to every ten years (in certain municipalities in Connecticut).
About AppealDesk
AppealDesk (www.appealdesk.com) is a property tax appeal service established by Rob Hartley that offers evidence-based appeal packets for homeowners in all 50 states. For a flat fee of $49 per property, the service produces a comparable sales analysis, county-specific filing instructions with deadlines and contact details, and a formal cover letter – the three essential documents needed to file a property tax appeal. The platform encompasses all 3,143 U.S. counties and utilizes real-time property data and comparable sales to create each packet. Homeowners who are determined not to be over-assessed receive a comprehensive analysis explaining the findings, along with screening for exemption eligibility and annual monitoring.
Learn more
Contact Information:
AppealDesk
119 Public Square
Gallatin, TN 37066
United States
Robert Hartley
6027502978
https://appealdesk.com
