The Wise Property Tax Almanac

How to read your county assessor's notice

The notice your county sends each year looks intentionally bureaucratic, but it actually contains the three numbers that decide your bill: the land value, the improvement value, and the total assessed value. Anything else on the form is either an exemption or an explanation of how to appeal.

Start with total assessed value and compare it to the previous year. A jump greater than 10% deserves a closer look — many counties have caps that make a sudden double-digit increase rare unless something changed (a sale, a permit, a re-classification).

Next, read the comparable sales the assessor cites — they are usually printed in tiny type on the back of the notice or available on the county portal with your parcel number. If those comparables are larger, newer, or in a clearly different submarket from your home, you have the start of an appeal.

Finally, check the protest deadline. It is the only date that matters, and it is often only 30 days after the notice was mailed. Miss it and you wait a full year. Wise Property Tax loads every state's deadline into our calendar and emails you 14, 7, and 1 day before.

The Texas appeal calendar — every deadline that matters

Texas runs the most aggressive property tax appeal calendar in the country, and missing a date means waiting until next year. The notices go out in early to mid April. The protest deadline in most counties is May 15 or 30 days after the notice was mailed, whichever is later.

Once you file a protest, you'll be offered an informal review with an appraiser — accept it. About 70% of Texas reductions happen at the informal stage and never go to a formal hearing.

If informal doesn't get you to a fair value, you'll be scheduled for the Appraisal Review Board (ARB), usually in June, July, or August. Three citizens hear your evidence. Bring printed comps, photos, and a one-page summary of value.

You generally have 60 days after the ARB ruling to appeal further (binding arbitration up to a market value of $5M, or district court). At that point, talk to a Wise Property Tax pro — the math has to work for it to be worth it.

Why your neighbor pays less (and how to fix it)

Most counties value property using a mass appraisal model. The model produces good averages but bad individual results — meaning two nearly identical houses on the same street can land hundreds or thousands of dollars apart on assessed value.

Your state's law almost certainly says assessments must be equitable with similar properties. That gives you a second shot beyond pure market value: even if your home really is worth what the county says, if a comparable home is assessed for less, you may be entitled to come down to that level.

Wise Property Tax's equity comparable feature pulls the 5 most-similar properties on your street and ranks them by assessed value per square foot. Where you sit in that ranking is your appeal in a single chart.

Florida's Save Our Homes cap, explained

Florida's Save Our Homes assessment limitation caps annual increases on your homesteaded primary residence at 3% (or the change in CPI, whichever is lower). The cap is wonderful — until you sell, at which point the new buyer's assessment resets to market value.

Portability lets you carry up to $500,000 of accumulated SOH benefit to your next Florida homestead, as long as you establish the new homestead within three tax years. Skipping this filing is the most common Florida tax mistake we see.

Even with the cap, you can still appeal market value. The lower of capped value or market value is what you pay tax on, so a successful market-value appeal still saves you money on the millage applied above the cap (school district taxes, in particular).

Informal review vs. formal hearing — how to choose

An informal review is a short conversation with an assessor. They have a target reduction in mind based on your evidence; you usually find out within 20 minutes whether they can offer it.

Take the informal offer when: the reduction is within $1,000 of your target, your evidence is moderate, and you don't want to schedule another half-day off work for the formal hearing.

Push to the formal hearing when: the offer is below 50% of your requested reduction, you have strong recent comparable sales, or the assessor is using comparables you can clearly disqualify.

Comparable sales 101 — the math counties actually use

Counties weight comparable sales by three factors: recency (within 9 months ideally), proximity (same neighborhood), and similarity (size, beds/baths, year built). Each comp gets adjusted up or down for differences — a comp with a nicer kitchen gets adjusted down, a comp with a smaller lot gets adjusted up.

The adjustment grid is the single most contested document in an appeal. Wise Property Tax's grid uses the same standards your county appraiser does, then computes a defensible adjusted-value range. Anything below the bottom of that range, and you have a strong case.

California's Prop 13 in 2026

Prop 13 (1978) sets your assessed value at the original purchase price plus an annual cap of 2% — for as long as you own the home. Most California homeowners never need to appeal, because their assessed value is wildly below market.

Where appeals matter is Prop 8 (1978) — the decline-in-value rule. If your market value drops below your factored base-year value, you can request a temporary reduction. This was huge in 2009-2012 and again briefly in 2023. Track current sales — if your neighborhood is down, file.

After you win — what changes on next year's bill

Many homeowners assume a successful appeal locks in the new value forever. It doesn't. The county can re-value your home next year just like every other property — and they often do, especially in rising markets.

This is why Wise Property Tax files an appeal for you every year automatically (free tier always, Pro on opt-in). The work compounds: each reduction lowers the base from which next year's increase is calculated.

How AI is changing property tax appeals (without removing the human)

The mass-appraisal models counties use have been computer-driven since the 1990s — what's new is that homeowners now have similar tools on their side. Wise Property Tax's model picks comps, runs the adjustment grid, and drafts the narrative in seconds. That's where the AI ends.

A human always reviews the packet. For Pro filings, a state-licensed property tax consultant signs and submits. The consultant reads what the AI produced, edits where local nuance demands it (every county has its quirks), and stands behind the filing. AI accelerates the prep; humans own the outcome.