Guides / Property Tax

How to protest your property tax assessment

Your property tax bill is driven by your assessed value, not just your tax rate — and assessed values are set by mass appraisal, which means errors are common. A successful protest lowers your assessed value, and the lower value compounds every year after. But there is a deadline, and missing it costs you a full year.

Step one: find your deadline

Check your county or appraisal district's protest deadline first — it is often in spring, and it is the single most expensive mistake in this category to miss it. The day your assessment notice arrives, calendar the deadline and work backward from it. Everything else in this guide is useless if the window has closed.

Your assessment notice itself is the starting document: it states the assessed value, the property description the assessor used, and how to protest. Read the property description carefully — wrong square footage, wrong condition, a finished basement you don't have — these are the errors that move values.

Build your evidence packet

Protests are won on evidence, not argument. Three kinds of evidence do most of the work:

1. Comparable recent sales. Look for nearby homes similar to yours that sold recently for less than your assessed value. The appraisal district's own comparable sales are especially persuasive — appraisers argue less with their own data. Pull the comps yourself rather than trusting the district's selection.
2. Photos of needed repairs and condition issues. A roof at end of life, foundation cracks, outdated systems, water damage — document all of it with dated photos. Condition is where mass appraisal most often overshoots, because the assessor never walked your property.
3. Unequal appraisal versus neighboring properties. If similar homes on your street carry lower assessed values than yours, that disparity is itself evidence. Compare assessed values (not sale prices) across comparable properties.

Organize the packet before you file: one page summarizing the value you believe is correct and why, followed by the comps, the photos, and the neighbor comparisons. Reviewers decide quickly; a clean packet beats a long letter.

File online first

Many jurisdictions allow online protest, and it is fast and free. File online first and see what the district offers. If the online offer is weak, request the in-person or phone hearing — hearings are often brief, and a short, evidence-led presentation is all it takes.

Then let the reviewer respond. Common outcomes:

• They accept your evidence and lower the value. Get the corrected value in writing and check the next tax bill to confirm it.
• They offer a partial reduction. Weigh it against your evidence — a partial win now beats a weak hearing later, but don't accept a number your comps don't support.
• They hold firm. Ask what evidence would change their view, and decide whether the hearing is worth it. Sometimes the answer is a specific document you can still gather.

When it won't work

• You missed the deadline. There is generally no late protest. Calendar next year's deadline now and prepare the packet early.
• Your assessment is already below market. If recent sales support a higher value than your assessment, a protest could theoretically raise it — don't file one.
• The comps support the district's value. If comparable sales line up with your assessment and your condition is average, there is no case. Save the effort for next year, when values or condition may have changed.
• You recently bought at or above the assessed value. Your own purchase price is strong evidence for the district. A protest built on comps below your purchase price faces an uphill climb.

Make it automatic

Put a recurring annual reminder on your calendar for a month before your county's protest window opens: check the new assessment, pull fresh comps, and re-photograph any condition issues. Assessed values reset every year, so last year's win doesn't protect next year's bill — but the habit does.