Bexar County Property Tax Protest: How to Do It Yourself
If your Bexar County appraisal notice shows a value that looks too high, you can protest it — free, on your own, without hiring anyone. The Bexar Appraisal District/BCAD runs the process, and most homeowners can handle it start to finish in a few hours. Here's exactly how.
Who Sets Your Value: The Bexar Appraisal District
BCAD determines the appraised value of every property in Bexar County for tax purposes. It is separate from San Antonio's city government and from the school districts and other taxing units that actually collect your taxes. When you protest, you are challenging BCAD's number. Lower that number, and every taxing unit's calculation shrinks with it.
The Protest Deadline — Confirm It Before Anything Else
Texas law generally gives homeowners until May 15 or 30 days after BCAD mailed your Notice of Appraised Value — whichever is later. Miss that window and you lose the chance to protest for the current tax year. Check the exact deadline at bcad.org as soon as your notice arrives. Deadlines work the same way in other counties; see Fort Bend County Property Tax Protest and Denton County Property Tax Protest for district-specific details.
Two Grounds Worth Filing On
Texas recognizes several protest grounds, but two cover the vast majority of successful residential protests:
- Market value: BCAD's appraised value is higher than what your home would realistically sell for today. You support this with recent comparable sales — similar homes nearby that closed for less. This same approach is used in other Texas counties; see Denton County Property Tax Protest for a parallel walkthrough.
- Unequal appraisal (equity): Your home is assessed at a higher ratio to market value than comparable properties nearby — even if the absolute dollar amount seems defensible. Texas is one of the few states where this argument alone can win a reduction. The same ground applies in other districts; see Property Tax Protest Tarrant County and Denton County Property Tax Protest for how those ARBs handle it.
You can check both grounds on the same protest form. Most homeowners do — there is no downside to filing on both simultaneously.
How to File Your Protest With BCAD
BCAD accepts protests online through its e-file portal at bcad.org, by mail using the standard Notice of Protest form, or in person at the BCAD office in San Antonio. Online is the fastest option and gives you an immediate confirmation. You do not need to submit evidence at the time of filing — you bring that to the hearing.
Once your protest is on file, BCAD may send an informal settlement offer before you ever appear before the Appraisal Review Board/ARB. Many cases settle at this stage. If you reject the offer — or don't receive one — your case proceeds to a formal ARB hearing, where an independent panel weighs your evidence against BCAD's.
Evidence That Moves the ARB
Print everything — the ARB panel will not scroll through your phone. The same preparation applies in other Texas counties; see Denton County Property Tax Protest for a comparable evidence checklist. For this hearing, bring:
- 3–5 comparable sales from the past 12 months — similar square footage, age, lot size, and condition, located as close to your home as possible, that closed below BCAD's appraised value.
- A table of neighboring properties' appraised value per square foot from BCAD's public records, showing yours is higher (supports an unequal-appraisal argument). See Denton County Property Tax Protest for how this evidence is used in other districts.
- Photos and repair estimates for condition issues BCAD may not know about — roof damage, foundation movement, outdated HVAC, drainage problems.
- A recent independent appraisal from a refinance or purchase — it carries real weight with the ARB. For more on how appraisals factor into protests elsewhere, see Denton County Property Tax Protest.
A reduction is not guaranteed — it depends on how your evidence lines up with BCAD's data and the ARB panel's judgment. Strong, nearby comps are the most reliable path. For outcomes in other counties, see Property Tax Protest Tarrant County.
Should You Hire a Protest Company?
Protest firms typically charge a percentage of first-year tax savings if they win. For a standard single-family home with clear comparable sales, the DIY path often produces the same outcome at no cost. A firm may add value when comps are scarce, the property is complex, or you can't take the time — in that case, ask about the fee structure and what happens if the protest is unsuccessful.
Protests in Other Texas Counties
The same protest framework applies across Texas, but each appraisal district has its own portal, deadlines, and ARB procedures. If you own property elsewhere, see guides for Travis County property tax protest, Harris County property tax protest, Tarrant County property tax protest, and Denton County Property Tax Protest.