How early should I start preparing before the deadline?
How early should I start preparing before the deadline?
Start the moment your assessment notice arrives — most states give only a short filing window (often 30–60 days from the notice), so the safe move is to gather comps and check your record card before the notice even mails, and file as early in the window as possible.
The honest answer: start before you think you need to. Most appeal windows are short and tied to your notice date, so the homeowners who win are usually the ones who prepared in advance and filed early.
Know your window. Filing deadlines are typically a fixed date or a short rolling period after the notice mails. Pete Sepp of the National Taxpayers Union, via Bankrate (Oct 31, 2025), notes that homeowners often have only about a 30–60 day window to challenge an assessment, and warns: "Miss the deadline, and you'll have to wait until next year." In Texas, the Comptroller sets the protest deadline at May 15 or 30 days after the notice is delivered, whichever is later — a tight, notice-driven clock.
A realistic prep timeline:
- Before the notice mails (off-season): Pull your property record card from the assessor and check it for errors — square footage, bedroom/bath count, lot size, condition. Factual errors are the easiest wins and you can hunt them anytime.
- The week your notice arrives: Read it carefully, note the exact deadline and the correct head term and board for your state, and confirm the value against recent comparable sales.
- Within the first half of the window: Gather 3–5 strong comps, organize photos of any condition issues, and draft your opinion of value. Filing early often secures a better hearing slot and leaves time to fix mistakes.
- Before the deadline: Submit the form (online where available) and, where offered, request the assessor's evidence so you can rebut it.
Why early beats late. Boards get crowded at the deadline, evidence requests take time to fulfill, and a last-minute filing leaves no margin for a portal outage or a missing form. Filing early also preserves the informal-settlement option, which is often the fastest path to a reduction.
What this means for you. Treat assessment season as a year-round habit: check your record card off-season, and the day your notice arrives, confirm the deadline on your county assessor or appraisal district's site and start assembling evidence immediately.
State-by-State Variations
| State | Exception or Variation |
|---|---|
| Texas | Texas — the protest deadline is May 15 or 30 days after the notice is delivered, whichever is later, per the [Comptroller](https://comptroller.texas.gov/taxes/property-tax/protests/); notices commonly mail in March–April, so prep should begin in late winter. |
| Florida | Florida — the VAB petition window is just 25 days after the TRIM notice (typically mailed mid-to-late August), so Florida homeowners should be ready before TRIM arrives. |