OPINION
This is an appeal from a district court order granting a plea to the jurisdiction based on sovereign immunity. The case concerns a piece of real property. Appellant Judith Elaine Carroll Koch is the surface owner of the property, and appel-lee Texas General Land Office (GLO) owns the mineral estate. The GLO removed limestone from the property without providing compensation to Koch under the claim that the limestone was a part of the mineral estate. Koch sought a declaratory judgment that the mineral estate does not include the limestone, and that the GLO’s removal of the limestone was a taking in violation of the United States and Texas constitutions. The GLO filed a plea to the jurisdiction based on sovereign immunity from suit. The district court granted the plea and dismissed the suit. We affirm the judgment of the district court as to Koch’s requested declaratory relief concerning the title ownership of the limestone. We reverse the judgment of the district court as to Koch’s takings claim and remand for further proceedings.
Factual and Procedural Background
Judith Elaine Carroll Koch is the successor-in-interest to a 641.1-acre parcel of land in Hudspeth County granted by the State to “Jos. J. Knox” in 1926. 1 The *454 patent under which the land was granted states, “All of the minerals in the above described land are reserved to the State.” According to Koch’s pleadings, the GLO removed a portion of the limestone from Koch’s land (leaving a large hole in the ground and a large stack of dirt and ca-liche) and obtained over $200,000 by its sale to a third party. The GLO asserted ownership of the limestone on the basis that the limestone constituted a portion of the minerals in the land.
Koch filed suit against the GLO on December 6, 2004, seeking (1) declaratory relief that the term “minerals,” as contemplated by the patent and applicable statutes at the time of the conveyance, does not include “dirt, soil, sand, gravel, caliche, and limestone” and, therefore, that title to such materials remains with the surface estate, and (2) declaratory relief that the GLO’s removal of any such materials was an unconstitutional taking and that any monies obtained by the State for the removed limestone be returned to Koch. 2 The GLO answered and filed a plea to the jurisdiction asserting that it possessed sovereign immunity from suit as to all of Koch’s claims. The district court granted the plea to the jurisdiction on December 22, 2006. Koch appeals.
Standard of Review
Sovereign immunity from suit deprives a trial court of subject-matter jurisdiction for lawsuits in which the State or a state agency has been sued, unless the State consents to suit.
See Texas Dep’t of Parks & Wildlife v. Miranda,
Claims for Declaratory Relief Regarding Title
Koch seeks declaratory relief that the term “minerals,” as contemplated under the original patent and the applicable statutes, does not include limestone or the other disputed materials. 3 Koch also con *455 tends that sovereign immunity does not bar her claims for declaratory relief.
The Uniform Declaratory Judgments Act (UDJA)
4
can generally be used to clarify a person’s legal rights in relation to the State.
See, e.g., Hawkins v. El Paso First Health Plans, Inc.,
However, a party’s request for declaratory relief cannot change the basic character of a lawsuit.
State v. Morales,
A trespass-to-try-title action is the proper method to adjudicate rival claims of title to real property.
See
Tex. Prop.Code Ann. § 22.001 (West 2000);
Martin v. Amerman,
Koch asserts that her lawsuit is not an attempt to establish title because she does not dispute the State’s title to the mineral estate; rather, she seeks a declaration of what that mineral estate includes. The Texas Supreme Court rejected a similar argument in
Martin v. Amerman.
That case involved a boundary dispute between two residential property owners, and the plaintiffs argued that a declaratory judgment action was proper because the suit would not determine substantive title rights but would merely declare the boundary’s location.
See Martin,
Koch’s characterization of her causes of action as merely construing the patent or the applicable statutes — the Texas Relinquishment Act
6
— does not change the analysis. Koch is correct that the UDJA generally permits a person who is interested in a deed, or whose rights, status, or other legal relations are affected by a statute, to have determined any question of construction or validity arising under the instrument or statute and obtain a declaration of rights, status, or other legal relations thereunder.
See
Tex. Civ. Prac. & Rem.Code Ann. § 37.004(a) (West 2008). However, the UDJA is “merely a procedural device for deciding cases already within a court’s jurisdiction.”
Texas Ass’n of Bus. v. Texas Air Control Bd.,
Koch’s claims under the UDJA are, in reality, claims to determine title to the limestone on her property. Consequently, “the action brought is considered a trespass-to-try-title suit and is not an action for declaratory judgment.”
Aguillera v. Kenedy Mem’l Found.,
Constitutional Takings Claim
Koch also seeks a declaration that the GLO’s removal of any disputed materials, including limestone, was a violation of the takings provisions of the United States and Texas constitutions as well as a declaration that any monies obtained by the State for such limestone be returned to Koch. This is as an assertion of a constitutional takings claim via a claim for declaratory relief.
Sovereign immunity does not shield the State from a claim based on an unconstitutional taking of property.
State v. Holland,
The GLO does not dispute that it has no sovereign immunity against a takings claim under the federal or state constitution. Unlike a declaratory judgment action regarding title, a takings claim is not a functional equivalent of a trespass-to-try-title claim. As stated by the First Court of Appeals:
The available remedy is a key distinction between the two. While one suit quiets title and possession of the property, the other allows only for just compensation for the property taken or used — the prevailing party does not regain use of land lost to the public’s use, or win possession of it.
Porretto v. Patterson,
The Thirteenth Court of Appeals reached a similar result in
Kenedy Memorial Foundation v. Mauro,
The GLO argues, however, that Koch cannot assert a takings claim. According to the GLO, its claim of title to the disputed materials establishes the absence of the GLO’s
intent
to commit a taking.
7
To establish a takings claim, Koch must prove (1) the State intentionally performed certain acts, (2) that resulted in a “taking” of property, (3) for public use.
Little-Tex Insulation Co.,
To support its contention regarding intent, the GLO cites to case law in which a takings claim was alleged in the context of a contract dispute. According to the Texas Supreme Court, when the State’s withholding of property or money occurs in a contractual context, the State does not have the requisite intent to commit a taking, as it is “acting within a color of right under the contract and not under its eminent domain powers.” Id. at 598-99. In reaching this holding, the supreme court recognized that the State sometimes wears two different “hats” — one as party to a contract and the other as sovereign — and when acting as the contracting party, the State is acting “akin to a private citizen.” See id. at 599. The GLO submits that this same reasoning should apply whenever the State “believes” it owns the real property at issue because in such a case it acts within a color of right as a landowner.
We are not persuaded that the State’s subjective belief regarding its title to property, by itself, changes or dictates the capacity in which the State acts. The GLO does not identify any authority to support its view that when the State acts in the role of a self-interested landowner— even though an actual dispute exists as to whether it is in fact the landowner — the State acts within a “color of right” in the same way as when it acts in its contractual capacity. We have found no authority holding that the State acts akin to a private citizen or other than as sovereign in such a circumstance. The analysis might be different if it is determined that the State is, in fact, the property owner. However, absent such a determination, the State’s intentional act of taking property for public use is an exercise of its eminent domain powers. The power of eminent
*459
domain is a sovereign power.
See City of Dallas v. VSC, LLC,
[T]he state in the exercise of its sovereign authority has the right to take, damage, or destroy private property for a public use, subject, of course, to the right of the owner thereof to adequate compensation. These principles of law are so well established and uniformly recognized that it is trite to repeat them.
Texas Highway Dep’t v. Weber,
The GLO also cites to case law that applies the following standard of intent, which the GLO asserts is determinative in current Texas takings jurisprudence:
[W]hen a governmental entity physically damages private property in order to confer a public benefit, that entity may be liable under Article I, Section 17 if it (1) knows that a specific act is causing identifiable harm; or (2) knows that the specific property damage is substantially certain to result from an authorized government action....
City of Dallas v. Jennings,
The
Jennings
intent standard was developed to draw a line between mere negligence and an unconstitutional taking.
See Gragg,
The GLO’s position on the takings claim is, at its essence, an attempt to add an intent standard regarding the ownership of the property alleged to be taken. We are of the opinion that the cases cited by the GLO do not support the application of such a standard of intent in situations such as this one. Therefore, we decline to adopt the GLO’s position.
See VSC,
As the Texas Supreme Court has observed, if the government could claim immunity for a taking by simply asserting title, then it need never legally condemn land — it “could simply appropriate it, and the landowner would be entitled to no compensation unless the Legislature granted him permission to sue.”
Porretto,
Finally, the GLO cites
Domel v. City of Georgetown,
Sovereign immunity does not bar Koch’s constitutional takings claim seeking compensation for the GLO’s removal of limestone from her property. If it is determined that the State owns the limestone on Koch’s property, Koch cannot recover under her takings claim. However, the State’s allegation of ownership, by itself, does not deprive the district court of jurisdiction over Koch’s claim.
*461 Conclusion
We reverse the portion of the district court’s judgment dismissing Koch’s constitutional takings claim, and remand that claim to the district court for further proceedings. We affirm the portion of the district court’s judgment dismissing all other claims.
Notes
. This lawsuit was originally filed by Maty Margaret Booth, acting both as the owner of a *454 three-fourths undivided interest in the subject land and on behalf of her mother Mary Virginia Booth, who owned the remaining one-fourth undivided interest. While the lawsuit was pending in district court, Mary Margaret Booth died, and Koch continued the lawsuit as independent executrix of Mary Margaret Booth’s estate. Also during that time period, Mary Virginia Booth granted her one-fourth interest to Koch, her granddaughter.
. Koch also sought a declaration that the GLO’s removal of any disputed materials, including limestone, violated the due process provision of the United States Constitution as well as the prohibition against retroactive laws in the Texas Constitution. However, Koch has not adequately briefed these issues and, therefore, has waived the issues.
See
Tex.R.App. P. 38.1(h);
San Saba Energy, L.P. v. Crawford,
. Koch’s pleadings seek three separate declarations that essentially seek to arrive at the same result:
1. A declaration that under the subject patent and the Texas Relinquishment Act in effect at the time of the State of Texas' original patent conveyance of the land in *455 question to the Plaintiffs ancestors, the term "minerals," as contemplated under said Act and patent, did not authorize the State to take or assume title to the dirt, soil, sand, gravel, caliche, and limestone which are part of the land in question;
2.A declaration that the dirt, soil, sand, gravel, caliche, and limestone, which are part of the land in question, do not come within the scope of [the] term "minerals,” as contemplated under the subject Act and patent; [and]
3.A declaration that under the original Relinquishment Act patent land conveyance to the Plaintiff's ancestors, title to the dirt, soil, sand, gravel, caliche, and limestone, which are part of said land, remained with the Plaintiff's ancestors and ultimately the Plaintiff and her Grandmother, and was not reserved by the Defendant or the State of Texas[.]
.Tex. Civ. Prac. & Rem.Code Ann. §§ 37.001-.011 (West 2008).
. The GLO cites to
Brainard v. State,
. Originally enacted in 1919, the Texas Relinquishment Act governs the State’s retention of ownership to the minerals underlying permanent school fund property. See Act of July 31, 1919, 36th Leg., 2d C.S., ch. 81, § 1, 1919 Tex. Gen. Laws 249 (current version at Tex. Nat. Res.Code Ann. §§ 52.171-.190 (West 2001)).
. The GLO points out that the courts in
Por-retto
and
Kenedy Memorial Foundation
did not address the issue of intent in the context of the State's colorable claim to title.
See Porretto v. Patterson,
