Property tax appeal deadlines, by state.
Every state sets its own window to contest a commercial real-estate assessment, and most owners find out only after it has closed. This is the 2026 filing calendar for real property, pulled from the assessing authorities, cross-checked, and kept in one place. Miss the window and you wait a full cycle, paying the higher bill the whole way.
Values and deadlines straight from the source, not scraped guesses.
Reserve Tax AI reads assessed values, tax rolls, and appeal windows directly from county assessors and taxing jurisdictions, then keeps them current as rolls certify and notices mail. No paper backlog, no OCR errors, no stale spreadsheets. The same authority-sourced data behind our appeals powers this calendar.
Florida runs on a 25-day clock.
Florida owners first see their new number when the TRIM notice hits in August, then have just 25 days to petition the Value Adjustment Board. It is the tightest, most-missed window in the country, and it is exactly where Reserve is live today.
Mid-August: TRIM notice mails. The property appraiser sends your Notice of Proposed Property Taxes with the new assessed value. This is the date that starts the clock.
25 calendar days: petition window. File your petition with the county Value Adjustment Board, pay the filing fee, and select a hearing type. Most deadlines land in September. File on day 26 and the appeal is denied automatically.
Later: evidence exchange & hearing. Evidence is submitted after the petition, ahead of a special magistrate hearing. Reserve Tax Group represents the parcel through resolution.
Window is statewide and strictly enforced. Confirm your county's exact mail date on your TRIM notice.
Find your filing window.
Real property (real estate) assessment appeals only. Search a state or filter by month. A Notice-based tag means the clock starts when your county mails the assessment notice, so your exact date varies, always confirm locally.
| State | Appeal deadline | What starts the clock |
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Sources: county assessing authorities and published state statutes, aggregated 2026. Dates shift year to year and by jurisdiction. This is a planning reference, not legal or tax advice, verify your parcel's exact date before you rely on it.
Reserve watches every deadline for you.
A calendar tells you when. Reserve tells you whether it is worth appealing, and then files it. We map every parcel in your portfolio to its jurisdiction's window, watch for the notice, model whether you are over-assessed, and orchestrate the appeal through licensed counsel before the clock runs out. You never diarize a due date again.
Every parcel mapped to its jurisdiction's appeal window and monitored for the assessment notice.
AI values each parcel against authority-sourced comps to flag over-assessment before you commit.
Reserve Tax Group, licensed counsel, files and argues the appeal inside the window.
Signed, parcel-level documentation and reductions tracked in one dashboard.
Questions owners ask.
Know the date. Then win the appeal.
Upload your portfolio and Reserve maps every parcel to its window, flags what is over-assessed, and files before the clock runs out. Now live in Florida.