///COMPARISONS

Property tax appeal services, compared honestly.

Every provider on these pages is a legitimate way to challenge an assessment. The comparisons are factual, cited to each provider's own public pages, and honest about when someone else is the better fit.

Comparisons

Castellan vs Ownwell

National-scale contingency appeals; describes managing the process “from paperwork filing to discussions with county ass…

Castellan vs O'Connor

Annual enrollment-based “Property Tax Protection Program” — appeals filed and represented every year, from informal hear…

Castellan vs AppealDesk

DIY evidence packet: comparable sales analysis, county-specific filing guide, pre-written cover letter, and deadline inf…

Fair questions.

How do I choose between property tax appeal services?

Start with three filters: your state (not every provider operates everywhere), your property type (commercial cases reward per-case depth; simple residential cases have more options, including DIY), and how much of the work you want done for you — a DIY packet, volume enrollment, or an appeal completed end to end including the hearing.

What does Castellan charge?

Pure contingency, one schedule in every state Castellan serves: $0 upfront and a share of your first-year savings, at a lower rate once your properties with Castellan pass a combined assessed-value threshold, quoted in writing before you sign. The rate keys on assessed value, so you know it before you sign rather than after a win. If the appeal doesn't win, the fee is $0 — and there's nothing to pay up front.

Know where you stand.

Enter your address and we'll check the county's records at no cost. If there's no case, we'll tell you that too.

Start your free analysis → Book a 15-minute call

Emailinfo@castellan.so

Serving California, Georgia, and Florida.

Property tax appeals. Any estimate is based on county assessment data and public records and is not a guarantee of any outcome. Representation and fee terms are provided in writing before any filing. Competitor information reflects their public materials as of the dates cited and may change — verify with the provider.