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Tennessee works, and reappraisal years produce enormous spikes in appeals.
The law and the data both work here. No cap and sale prices are public. Nashville's 2025 reappraisal drew more than 19,000 informal reviews plus 14,600 formal appeals, a record, with hearings booked into late 2026. Counties reappraise on published cycles.
So Tennessee decides these on market value, which means the evidence is recent sales of genuinely comparable homes. What really matters is whether that whole set of sales sits below your assessed value. If they bracket your assessment instead of falling under it, boards usually side with the assessor, because nothing's been clearly disproved.
Now a few things lose almost everywhere. Comparing your assessment to a neighbor's assessment usually doesn't count where the argument's market value. One sale on its own can pretty easily be dismissed as an outlier. And the size of your increase, or the size of your bill, isn't really evidence about what your home's worth.
County boards of equalization usually take appeals in June, and your assessor's office has the exact date. The state board's deadline was August 1 for 2026.
Miss it and you generally wait a year, so honestly the date matters more than the paperwork does.
And wherever you are, the single most useful thing you can actually do today is go find your assessment notice and read the date printed on it. That's what starts your clock, it's usually a much shorter window than people expect, and there's no getting it back once it's gone.
First, look up your own record. Your county assessor of property's website shows your appraisal, and it's free to look. Counties reappraise on published cycles, and most appeals happen in a reappraisal year, when values usually jump.
Next, know where to file. Start with an informal review at the assessor's office, which is free and actually settles a lot of cases. The formal appeal goes to your county Board of Equalization, which usually starts meeting June 1 and closes appeals in June. Davidson County's 2026 deadline was June 26, for example. Your assessor's office'll have the exact date. If you don't agree with the county board, you can appeal to the State Board of Equalization.
Then bring the evidence that wins here. Tennessee decides these on market value, so the evidence that really counts is sales of genuinely similar homes, close to January 1 of the reappraisal year.
Also, check your exemptions. The state's tax relief program helps older, disabled and disabled veteran homeowners under income limits, and some counties also offer a tax freeze for seniors. Your county trustee's office handles both, and it's usually a short form.
We only turn a state on once we've read its appeal rules and its actual board decisions, because that's how we make sure what we tell you is right and not generic. It takes a few days per state, and honestly it's the reason our answers are worth anything.
In the meantime our free check runs in parts of Illinois, Washington, Ohio, Georgia, Colorado, North Carolina and Oregon, and in every town in New Jersey. If you leave your email on the check page, we'll write to you the day Tennessee goes live, and we won't email you before that.
We've screened all fifty states and DC on the same two questions. Does winning a lower market value actually lower your bill, or is there a cap sitting in between? And can you even put the evidence together from public records?
This comes from our own fifty-state screen, where we checked each state's cap, whether sale prices are public, whether there's an argument based on assessed values, and how many appeals actually get filed. Where we've quoted an appeal count, it's from the state or county that published it. If you spot an error, please write to hello@propertytaxbuddy.com and we'll correct it and say what changed.