Duval County Commercial Property Tax Protest

Questions Duval County Commercial Property Owners Ask Most

”The oil activity has slowed down. Why is my property still assessed the same as it was in 2022?”

This is the most common complaint from Duval County commercial property owners — and one of the strongest protest arguments available. Duval County’s commercial real estate market is heavily influenced by oil and gas activity in the Eagle Ford Shale play that underlies much of South Texas. When exploration and production spending was high, demand for commercial services, equipment yards, and operational facilities in San Diego, Benavides, and along the US-59 corridor supported elevated property values.

When activity contracts — as it has during lower oil price cycles — demand for commercial space drops, vacancy increases, rents fall, and market values decline. The Duval County Appraisal District’s mass appraisal models are slow to reflect these cyclical downturns. The result: commercial properties that were fairly assessed during the boom remain at elevated assessed values even as the market that justified those values has cooled.

If you experienced a reduction in occupancy, rents, or commercial activity on your property between the last assessment and the current one, that evidence directly supports a downward protest.

”I can’t find any sales of similar commercial properties in Duval County. How can the district justify its values?”

This is a legitimate challenge. Duval County has a population of approximately 11,000 and a very thin commercial real estate transaction market. In any given year, there may be fewer than 20 to 25 arm’s-length commercial property sales in the entire county. This thin data set gives the appraisal district limited calibration material and creates significant potential for the district to:

• Stretch comparables from dissimilar locations (larger South Texas cities like Laredo or Corpus Christi) that don’t reflect Duval County’s limited market
• Rely on outdated sales from the boom years without adequately adjusting for current market conditions
• Use income approach assumptions derived from regional benchmarks rather than local market realities

When the district’s evidence base is weak, your evidence matters more. Presenting actual income data, realistic market rent comparisons, and careful equity analysis from the county roll can be more persuasive in Duval County precisely because the appraisal district has so little solid data to rely on.

”I own a commercial building that sits vacant. Why is it assessed at full value?”

Vacant commercial property presents specific protest grounds. A building that cannot attract a tenant at market rate — or that sits vacant because the market demand for that space does not currently exist — has a market value that reflects that vacancy. Under Texas Tax Code §23.01, market value is the price a property would bring in an arm’s-length transaction. A buyer acquiring a vacant commercial building in Duval County will discount the value to account for:

• Carrying costs during the lease-up period
• Costs to attract and retain tenants in a market with limited demand
• The risk premium associated with uncertainty about future occupancy
• Any physical deterioration or deferred maintenance accumulated during vacancy

If you have documented vacancy — dates, efforts to lease, any offers received and declined, and market surveys showing limited demand — compile that documentation. Vacancy is a factual condition that directly supports a lower assessed value and, in many cases, produces prompt settlement at informal hearing.

Duval County Commercial Tax Rates

Duval County’s commercial properties are subject to levies from several taxing entities:

Taxing Entity	Approximate Rate Range
Duval County	0.45% – 0.65%
San Diego ISD	0.78% – 1.05%
Benavides ISD or Freer ISD	0.72% – 0.98%
City of San Diego	0.48% – 0.62%
City of Benavides or Freer	0.38% – 0.55%

Combined rates for San Diego commercial properties typically range from 1.7% to 2.3%. Properties in Freer or Benavides may see slightly different combined rates depending on local school district levies and special district overlaps.

At a 2.0% combined rate, a $500,000 commercial property generates a $10,000 annual tax bill. The oil and gas service sector in Duval County operates on margins that cannot absorb excess tax burdens indefinitely — identifying and correcting overassessments protects the viability of local commercial operations.

Duval County’s Commercial Property Landscape

Duval County’s commercial base reflects the intersection of its agricultural heritage and energy sector influence:

Energy Sector Services: Equipment yards, pipe storage, maintenance facilities, and support services for oil and gas operations in the Eagle Ford. These properties have highly variable value depending on activity levels in the Duval County portion of the play.

Agricultural Support: Feed stores, chemical suppliers, and equipment dealers serving ranching and farming operations. Duval County has historically been one of the major cattle ranching counties in South Texas, and commercial businesses serving that sector represent a significant portion of the county roll.

Highway Commercial: US-59 connects Duval County to Laredo to the west and Corpus Christi to the east. Highway corridor commercial properties capture some regional traffic but compete with larger commercial centers in both directions.

County Seat Services: San Diego (population approximately 4,200) has a small retail and service commercial district. Properties here have limited buyer pools and generate modest income relative to their assessed values.

Oil and Gas Cycle Evidence for Commercial Protests

For commercial properties directly serving the energy sector, document the relationship between your property’s value and oil and gas activity levels:

Rig count data: Texas Railroad Commission and Baker Hughes report active rig counts by basin. Eagle Ford activity data shows clearly when periods of contraction have occurred. If your property’s commercial activity tracks rig counts — as equipment yards, pipe storage facilities, and oilfield service businesses typically do — the rig count data is supporting evidence for reduced income expectations.

Actual revenue and occupancy records: If you operated the property as an income-producing facility and revenue declined during a period when the appraisal district kept values flat or increased them, present actual P&L data. Confidentiality concerns can be addressed through the ARB’s evidence submission process.

Lease rate comparisons: If you lease the property to energy sector tenants and rates have declined from prior years, provide lease rate history. The decline in market rent directly supports a lower income-approach value.

How We Help Duval County Property Owners

We represent Duval County commercial property owners on contingency — you pay 30% of the first-year savings we achieve, nothing if we achieve no reduction.

Step 1: Free Review. We analyze your appraisal notice and Duval County appraisal records to identify protest grounds.

Step 2: Filing. We file before May 15 and handle all communications with the Duval County Appraisal District.

Step 3: South Texas Evidence Package. We develop an energy-market-calibrated evidence package that accounts for cyclical demand, thin transaction data, and geographic market realities.

Step 4: Hearing Representation. We handle informal and, if necessary, formal ARB hearings.

Step 5: Verification. We confirm the reduced value flows through to your tax bill.

For the complete Texas protest process, see our how-to-protest guide. For neighboring South Texas county comparisons, see our pages for Cameron County and Bexar County.

Ready to protest your Duval County commercial property assessment? Contact LowerMyCommercialTax.com — we work on contingency, so you pay nothing unless we save you money.

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About the Author

Mike VanVickle is the founder of LowerMyCommercialTax.com, helping Texas commercial property owners reduce their tax burden through professional protest representation. With deep expertise in Texas property tax law and appraisal district processes, Mike and his team have helped property owners across all 254 Texas counties achieve meaningful reductions on a contingency basis — no savings, no fee.

Sources & References

• Texas Comptroller of Public Accounts — Property Tax System Basics
• Texas Property Tax Code, Title 1, Subtitle D — Tax Code §41.41
• Texas Railroad Commission — Eagle Ford Shale Activity Reports
• Duval County Appraisal District — 2026 Appraisal Roll Data
• Texas Taxpayers and Research Association — Property Tax Reports

This guide was last reviewed and updated on May 22, 2026. Tax rates, deadlines, and procedures are subject to change. Consult your county appraisal district for the most current information.