delivered the opinion of the Court.
The Texas Constitution guarantees that “[tjaxation shall be equal and uniform.”
I
An oil refinery is typically a sprawling, complex facility with many different components. Processing units of varying types convert crude oil into different petroleum products including gasoline, diesel, kerosene, lubricating oil, liquified petroleum gas, asphalt, and petroleum coke. Tanks store crude and product inventories. Support buildings house operations and administration. The plant incorporates pollution control equipment required by the State. The facility contains personal property, including inventories, furniture, fixtures, equipment, and supplies. There are intangible assets. And the whole thing sits on land.
Some refineries are more complex than others and can extract more products from crude. A “heavy-conversion” or “deep-conversion” refinery can operate on heavier
Galveston County has three oil refineries, all in Texas City. Petitioner Valero Refining-Texas L.P. (“Valero”) and BP Products (NA), Inc. (“BP”) both own heavy-conversion refineries, and Marathon Petroleum Co. (“Marathon”) owns a medium-conversion refinery. BP’s refinery is the largest and most complex, while Marathon’s is the smallest and least complex. Marathon’s refinery, unlike the other two, cannot remove sulfur from its products. Because of this, Marathon sends its finished products to other refineries for further treatment before sale in the United States.
In other respects, the three facilities are typical of refineries generally. Each sits on land, processes crude oil to produce petrochemical products, and has storage facilities and access to utilities. Each also has support facilities such as warehouses and administration buildings. And each has pollution control equipment (“PCE”). PCE is not part of the refining process but is required to operate the refinery, and its value would be included in determining the refinery’s market value. PCE is largely, but not entirely, tax-exempt. ,
Generally, a tract of land and its improvements are appraised together and assigned a single value. But appraisal districts are permitted to divide a tract and its improvements into separate components, each with its own tax account number, and appraise them individually. A district is required to give the owner “notice of what property was included in each tax account (and thus some assurance that it was not included twice)”.
.Valero protested some, but not all,
Valero contends that for determining unequal taxation, the two other Galveston County refineries are “a reasonable number of comparable properties” under section 42.26(a)(3) of the Tax Code.
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The District’s expert testified that these differences are so great that the three refineries are not comparable, and that three properties are not enough to determine whether Valero’s appraisals were equal and uniform.
But if comparison is to be made, all the experts agreed that values for the refineries must be adjusted for differences in capacity and complexity by calculating Equivalent Distillation Capacity (“EDC”), which is the product of the two figures.
The experts calculated values per EDC, found the mean between BP’s and Marathon’s, and used it to calculate Valero’s adjusted account appraisals. The experts also made these calculations both including and excluding the refineries’ PCE accounts, although Valero had dropped its challenge to that account.
Including or excluding the refineries’ PCE accounts greatly impacts the comparative values of the three refineries. The experts’ testimony is summarized as follows:
Valero argued the greater over-appraisal to the jury, justifying the exclusion of PCE from the calculations on the ground that it was no longer including its PCE account in its unequal appraisal claim. The District argued that the only reason to exclude PCE was to overstate the alleged inequality. The jury found that the property had been appraised unequally by the amount calculated by Valero’s experts excluding PCE.
The District appealed, arguing that the trial court lacked jurisdiction to determine an unequal appraisal challenge to anything but an entire tract, and that the evidence was factually and legally insufficient to support the jury’s findings.
We granted the District’s and Valero’s petitions for review.
II
The Tax Code prescribes the process for obtaining judicial review of a property appraisal. The dissatisfied owner must first protest before the local appraisal review board.
Here, the parties do not dispute that: the District appraised Valero’s refinery in separate tax accounts; Valero filed separate protests of each of some but not all of the account appraisals (not the land, for example); the appraisal review board decided the protests by separate orders for each account; Valero timely appealed those orders; and its petition sufficiently identified the property covered by the tax accounts. But the District argues that the “property” referred to in the statutory provisions authorizing appeal is not the property in the separate tax accounts but the entire refinery. The sole authority the District cites for its argument is Covert v.
Valero’s petition for judicial review fully complied with all of the statutory requirements. Nothing in the applicable statutory provisions requires a taxpayer to challenge all the appraisal accounts used to appraise its property. On the contrary, the Tax Code defines “property” as “any matter or thing capable of private ownership.”
Ill
As we noted at the outset, the Tax Code provides that “a property is appraised unequally if [its] appraised value ... exceeds the median appraised value of a reasonable number of comparable properties appropriately adjusted.”
The District argues that no two refineries are really the same, and that some, but not all, are comparable. While it is certainly true that every piece of real estate is unique,
IV
Different aspects of real property may be appraised and taxed separately even though all are part of the same sur
The District argues that in determining whether Valero’s property has been taxed unequally as compared to BP’s and Marathon’s, only the total valuations can be compared and not their component accounts. In essence, the District’s argument is that the value of property in one tax account is affected by the value of property in other accounts—that is, that the components of the refineries cannot be appraised separately. This is contradicted by the District’s own determination that they can be. The District does not argue that it was wrong to use separate accounts in appraising the refineries but minimizes its decision as one of administrative convenience. The District’s argument that appraisals of some accounts cannot be compared separately from appraisals of others violates the requirement that a property owner have notice of what is included in each account to be assured that property is not being double-taxed. If the component parts of a property cannot be valued in isolation, then as a matter of law, separate tax accounts are not appropriate. It follows that if tax accounts are appropriate, then as a matter of law, the property in each account can be valued in isolation. This is transposition logic, not a factual dispute.
The District argues that PCE must be included in comparing the values of the processing units and tanks because PCE is an integral part of a refinery, without which it cannot operate. But if PCE can be appraised separately, and no one disputes that it can be, then the other account appraisals can be compared with out regard to the PCE appraisals, just as, for example, the appraisals or tanks or land could be compared separately. The District argues that appraised PCE values substantially impact the equalized value calculations. They obviously do, but that is no more reason to include them in the comparison than to exclude them. The reason for the disparity, according to Valero’s experts, is that the District is not careful in appraising PCE, perhaps because much of it is tax-exempt. The District has not offered an explanation. Whatever the reason, the influence of PCE values on the equalized value calculations is not sufficient reason to require that they be included. While the District complains that Vale-ro has excluded PCE values to obtain a more favorable result, one would expect a party to do exactly that. If Valero’s calculations are permitted, as we have concluded they are, then it matters not that they are also beneficial to its position.
The District argues that the refineries’ values cannot be adjusted, as they must be for comparison, using the EDC metric because it only measures what re
Having determined that Valero’s, BP’s, and Marathon’s refineries can best be appraised using different accounts for separate components, it cannot, as a matter of law, argue that the values cannot be compared for determining whether Valero’s constitutional right to equal and uniform taxation has been violated.
* * * * *
Accordingly, we reverse the judgment of the court of appeals. The District has raised other issues on appeal, including the factual sufficiency of the evidence to support the verdict, which must be determined by the court of appeals; hence, we remand the case to that court. If Valero prevails, then, of course, it would be entitled to recover its attorney fees.
So ordered.
. Tex. Const. art. VIII, § 1(a).
. Tex. Tax Code § 42.26(a)(3).
. 463 S.W.3d 177, 190 (Tex. App.-Houston [14th Dist.] 2015).
. The Index was developed by W. L. Nelson in the 1960s to quantify the relative cost of components that make up a refinery. It provides a relative measure of the construction costs of a particular refinery based on its crude and upgrading capacity. See Daniel Johnson, Refining Report Complexity Index indicates refinery capability, value, Oil & Gas Journal (Mar. 18, 1996), http://www.ogj.com/articles/prinV volume-94/issue-12/in-this-issue/general-interest/refining-report-complexity-index-indicates-refinery-capability-value.html.
. Oil & Gas Journal, http://www.ogj.com/index/ about-us.html.
. Matagorda Cty. Appraisal Dist. v. Coastal Liquids Partners, L.P., 165 S.W.3d 329, 335 (Tex. 2005).
. It is not clear from the record which accounts Valero included in its initial protest.
. Tex. Tax Code § 42.26(a)(3).
. The jury was instructed that unequally appraised means "the appraised value of the property exceeds the median appraised value of a reasonable number of comparable properties appropriately adjusted,”
. See Tex. Tax Code § 42.29 (permitting award of fees to a party who prevails under section 42.26).
. 463 S.W.3d 177, 180 (Tex. App.-Houston [14th Dist.] 2015). The District also argued that: Valero’s late amendment constituted a surprise; the evidence that Marathon is a comparable property is factually insufficient; Valero failed to offer legally and factually sufficient evidence of a median appraised value of a reasonable number of comparable properties; Valero’s evidence on attorney fees was inadmissible; and evidence of the award of attorney’s fees was factually and legally insufficient. The court of appeals did not address these arguments.
. Id. at 184-187.
. Id. at 190.
. Id. at 190-193. Accordingly, the court did not address the District’s arguments that the evidence was factually insufficient to support the verdict. Id. at 190 n.14.
. Id. at 191-192.
. Id. at 192.
. Id. at 193.
. Id. at 194.
. 59 Tex. Sup. Ct. J. 1593 (Sept. 2, 2016).
. Tex. Tax Code § 41.41(a).
. Id. § 41.41(a)(1-2).
. Id. § 41.47(a).
. Id. § 42.01(a)(1)(A).
. Id. § 42.21(h).
. 241 S.W.3d 655 (Tex. App.-Austin 2007, pet. denied).
. Id. at 656, 661 ("[h]olding that the trial court did not err because the statute requires a taxpayer to challenge the appraised valuation of the entire improved property and not merely its component values,” and "that a taxpayer challenging the equal and uniform assessment of an improved property under section 42.26 must allege that the overall appraised value of the property is unequal”).
. Tex. Tax Code § 1.04(1).
. Id. § 42.26(a)(3).
. Id. § 23.01(f).
. See Butnaru v. Ford Motor Co., 84 S.W.3d 198, 209 (Tex. 2002).
. Matagorda Cty. Appraisal Dist. v. Coastal Liquids Partners, L.P., 165 S.W.3d 329, 332 (Tex. 2005).
. See id. at 335. See also Tex. Att’y Gen. Op. No. GA-0790 (2010) (suggesting that the chief appraiser has administrative discretion over whether to organize land and improvements into separate tax accounts, citing Tex. Tax Code § 25.02).
. Matagorda Cty. Appraisal Dist., 165 S.W.3d at 335.
. The parties tell us that the District has since ceased appraising the refineries using separate accounts. We intimate no view, of course, on the change.
. Tex. Tax Code § 42.26(a)(3).
. Tex. Tax Code § 42.29.
. Capacity is measured in “barrels of crude per stream day”, which the United States Energy Information Administration defines as "[t]he maximum number of barrels of input that a distillation facility can process within a 24-hour period when running at full capacity under optimal crude and product slate conditions with no allowance for downtime.” See U.S. Energy Information Administration, Glossary, www.eia.gov/tools/glossary/index.cfm? id=B.
