Cameron County, Texas Property Tax Appeal Guide for 2027

What deadline matters first

For the 2027 Cameron County appraisal cycle, the regular protest deadline is May 17, 2027. The usual Texas deadline is May 15 or 30 days after the appraisal district mails the notice, whichever is later; May 15, 2027 is a Saturday, so the regular May 15 deadline moves to the next regular business day. The local notice is the Notice of Appraised Value, which is the mailed notice showing Cameron Appraisal District’s value for your property. Texas Comptroller protest guidance and Cameron CAD’s notice insert describe the May 15 or 30-day rule. Cameron CAD Notice of Appraised Value insert

If your Notice of Appraised Value is mailed late, your deadline may be later than May 17, 2027. Use the date on your own notice, not a neighbor’s notice, because the 30-day rule can make the deadline property-specific.

The protest goes to the Cameron Appraisal Review Board. Cameron CAD says a protest must be in writing, and its FAQ describes filing by mail, hand delivery, fax, or email by the protest deadline. Cameron CAD FAQ

For planning only, TaxSauce uses a countywide estimated median effective tax rate of 1.50%. Your actual tax rate can be higher or lower because school districts, cities, the county, and special districts set tax rates. Cameron Appraisal District does not set those tax rates.

For a volume example, O’Connor’s 2024 Cameron County compilation reported 13,110 Appraisal Review Board property tax protest hearings, including 5,701 hearings for houses. This is a third-party appeal count, not a guarantee that any individual homeowner will receive a reduction. O’Connor 2024 Cameron property tax protest data

The common value appeal

The common homeowner protest reason is “Incorrect appraised (market) value and/or value is unequal compared with other properties.” Use this when you believe Cameron Appraisal District’s January 1, 2027 market value is too high, or when similar properties are valued lower.

“Market value” means the value as of the appraisal date, which is January 1, 2027 for this cycle. A recent arm’s-length sale of your home can be strong evidence if it reflects an open-market transaction with a knowledgeable buyer and seller and no unusual pressure.

Comparable sales should be homes like yours in the same neighborhood or competitive market area. Look for similar property type, building size, land size, age, condition, quality, location, and amenities. If a sale is different, explain the difference rather than hoping the board notices it.

Cameron CAD’s evidence guidance recognizes sales of comparable properties, closing or settlement statements if a sale occurred within two years, and recent fee appraisals. It also recognizes printed photos, listing-price and time-on-market evidence, insurance information, and structural-damage reports. Cameron CAD FAQ

Other reasons you might appeal

Texas protest forms include official reasons beyond value. Choose every reason that actually applies, because the board can decide only the protested items. The following labels come from the verified Cameron County policy snapshot and should be preserved exactly when you file:

• Property should not be taxed in a taxing unit: use this if a school district, city, county, or other taxing unit is listed even though the property should not be taxable by that unit.
• Property is not located in this appraisal district or otherwise should not be included on the appraisal district’s record: use this if the property should not be on Cameron Appraisal District’s records.
• Failure to send required notice: use this if a legally required appraisal notice was not sent or delivered as required.
• Exemption was denied, modified, or cancelled: use this when a homestead, over-65, disability, disabled veteran, or other exemption was denied, reduced, changed, or cancelled.
• Temporary disaster damage exemption was denied or modified: use this if a temporary disaster damage exemption application was denied or changed.
• Ag-use, open-space or other special appraisal was denied, modified or cancelled: use this when agricultural-use, open-space, timber, or another special appraisal treatment was denied, changed, or cancelled.
• Change in use of land appraised as ag-use, open-space, or timber land: use this if the district says land previously under special appraisal changed use.
• Incorrect appraised or market value of land under special appraisal for ag-use, open-space or other special appraisal: use this if the productivity or market value assigned to land under special appraisal is wrong.
• Owner's name is incorrect: use this when the appraisal record lists the wrong owner name.
• Property description is incorrect: use this when the record has an incorrect legal description, building description, land description, or other descriptive data.
• Incorrect damage assessment rating for a property qualified for a temporary disaster exemption: use this if the disaster-damage rating category is wrong.
• Circuit breaker limitation on appraised value for all other real property was denied, modified or cancelled: use this if the circuit breaker limitation for eligible non-homestead real property was denied, changed, or cancelled.

The Texas Comptroller’s Form 50-132, Property Owner’s Notice of Protest, is the statewide protest form used to identify protest reasons. Texas Comptroller Form 50-132

If your Notice of Assessment says something else changed

A Notice of Assessment is the assessment notice that tells you what value, exemption, classification, ownership, or description the appraisal office has placed on your property. In Cameron County, the official local notice label is Notice of Appraised Value. That is the notice you should read carefully before choosing protest reasons.

If the notice only shows a value increase, the value reason may be enough. If it also says an exemption was denied, special appraisal was cancelled, a disaster rating was assigned, or the property description changed, you may need to select the matching official reason too.

Do not ignore small-looking record errors. A wrong square footage, building condition, land size, owner name, or taxing unit can affect the value or the account record. If you protest a record issue, bring documents that show the correct information.

What evidence helps

Start with evidence that directly explains the value as of January 1, 2027. Strong homeowner evidence can include comparable sales, your closing statement if you bought recently, a fee appraisal, printed photos showing condition problems, repair estimates, insurance information, or structural-damage reports.

Cameron CAD says all evidence is scanned and retained, so bring copies rather than originals you need back. It also says not to submit electronic devices such as memory cards, digital cameras, or video cameras as evidence. Cameron CAD FAQ

If you use a fee appraisal, Cameron CAD states that it must be submitted 14 days before the ARB hearing to be admitted as evidence. Cameron CAD FAQ

For comparable sales, prefer arm’s-length, open-market sales. That usually means the buyer and seller were knowledgeable, the property was exposed to the market for a reasonable time, and neither side was forced to act. Be careful with foreclosures, related-party transfers, distressed sales, partial-interest sales, and sales with unusual concessions.

Cameron CAD does not publish a fixed comparable-sale radius, building-size variance, lot-size variance, or maximum comparable count. As a conservative screening approach, TaxSauce usually starts with nearby sales, often within about five miles when possible, and focuses on the most similar sales rather than a large pile of weak examples.

What the board can and cannot decide

The Cameron Appraisal Review Board, often called the ARB, is the official protest body. Cameron CAD describes the ARB as an independent group of citizens authorized to resolve disputes between taxpayers and the appraisal district. Cameron CAD ARB hearings page

At a formal hearing, you and the appraisal district each present evidence. The ARB hears testimony, reviews the evidence, and makes a decision on the protested items. Cameron CAD says hearings generally last about 15 minutes, and the board order is sent later by certified mail. Cameron CAD ARB hearings page

The ARB cannot decide everything that feels unfair about taxes. Cameron CAD states that the ARB has no control over property taxes, quality of government services, or appraisal district operations, and that those topics should not be included in your presentation. Cameron CAD FAQ

Focus your presentation on the specific protest reasons you filed. If the issue is value, explain the comparable sales and condition evidence. If the issue is an exemption, special appraisal, disaster rating, ownership name, or description, show documents that prove the correction you are requesting.

How TaxSauce helps

TaxSauce helps you turn a confusing notice into an organized protest packet. We can estimate whether the value looks high, screen comparable sales, flag record issues, and prepare a plain-English summary you can review.

You stay in control. You choose the protest reasons, review the evidence, decide whether to submit the materials, and decide whether to attend a hearing, use an affidavit, or share the packet with a representative.

TaxSauce does not set Cameron County deadlines, guarantee a reduction, or replace the Cameron Appraisal Review Board’s decision. The goal is to help you file with clearer evidence, fewer surprises, and a better understanding of what the board is allowed to decide.