Mineral and Surface Rights in Texas: Exam Guide

Texas is an oil, gas, and groundwater state, so this topic carries real weight here. The core idea is that land is not just the surface. A buyer can own the surface while a stranger owns the minerals below, and that split changes who controls what. Learn the split estate, the dominance rule, and the five mineral rights.

The split estate: surface and minerals

Snippet answer: A split estate exists when the surface estate and the mineral estate of the same land are owned by different people. Minerals are severed by a reservation in a deed or by a separate mineral deed. Once severed, the surface owner and the mineral owner hold distinct property interests in the same tract.

Ownership of land runs from the sky down through the surface to the minerals below. Texas lets an owner sever the minerals from the surface, creating two separate estates in one tract. That is a split estate, and it is extremely common in Texas.

Severance happens two ways:

• Reservation. The seller conveys the surface but keeps the minerals, using a reservation in the deed.
• Mineral deed. The owner sells the minerals to someone else in a separate mineral deed, leaving the surface behind.

Once minerals are severed, they have their own chain of title. A buyer of the surface may get little or none of the minerals, which is why checking the mineral status is part of examining title. This vertical division of surface, air, and subsurface rights is the same idea introduced in the bundle of rights.

The mineral estate is the dominant estate

Snippet answer: In Texas, when the mineral estate is severed from the surface, the mineral estate is dominant. The mineral owner has an implied right to use as much of the surface as is reasonably necessary to explore for and produce the minerals. Under the accommodation doctrine, the mineral owner must sometimes accommodate an existing surface use when reasonable alternatives exist.

This is the rule that surprises new agents. In a Texas split estate, the mineral estate is the dominant estate. The mineral owner holds an implied easement to use the surface as reasonably necessary to reach and produce the minerals. That right holds even over the objection of the surface owner, so a rancher can own the surface and still have a well site placed on it by the mineral owner.

That dominance is not unlimited. In Getty Oil Co. v. Jones (1971), the Texas Supreme Court adopted the accommodation doctrine. A mineral owner may have to accommodate the surface owner when there is an existing surface use, the mineral owner's plan would preclude or substantially impair that use, and a reasonable alternative to recover the minerals exists under industry practice. Parties often sign a surface use agreement to spell out where drilling can go and how the surface will be protected. The mineral owner's surface right is a kind of implied easement, tempered by the duty to accommodate.

The five rights of a Texas mineral estate

Snippet answer: Under Altman v. Blake, a Texas mineral estate has five separable attributes: the right to develop, the right to lease (the executive right), the right to receive bonus payments, the right to receive delay rentals, and the right to receive royalties. Each is a distinct property interest that can be conveyed or reserved on its own.

Texas treats the mineral estate as a bundle of five separate rights. The Texas Supreme Court laid them out in Altman v. Blake (1986), and any of them can be split off and owned separately.

Because these rights are separable, Texas ownership can get intricate. One person can hold the executive right while another collects the royalty, which creates a non-participating royalty interest, a right to royalty with no say in leasing. For the exam, the key is that the mineral estate is not one indivisible thing. It is five sticks, each of which can be conveyed or reserved.

The oil and gas lease and how owners get paid

Snippet answer: An oil and gas lease is an agreement in which the mineral owner, the lessor, grants a company, the lessee, the right to explore and produce. The mineral owner is typically paid three ways: a bonus for signing, delay rentals to postpone drilling, and a royalty share of production. The lease has a primary term and continues so long as there is production.

Most Texas minerals are developed through an oil and gas lease. The mineral owner is the lessor, and the exploration company is the lessee. The lease gives the company the right to drill and produce, and it defines how the owner is paid.

The three classic payments track three of the five mineral rights:

• Bonus. An up-front payment, usually per acre, for signing the lease.
• Delay rental. A payment that lets the company delay drilling during the primary term without ending the lease.
• Royalty. A share of the value of what is produced, often between one-eighth and one-fourth, paid free of production costs.

A lease runs for a primary term of set years, then continues into a secondary term for as long as the well produces in paying quantities. The company's operating stake is the working interest, which bears the costs of drilling and production. You do not need every detail for the sales exam, but you should recognize the lessor and lessee roles and the three payment types.

Rule of capture and the Texas Railroad Commission

Snippet answer: Under the rule of capture, a Texas landowner who drills a well on their own land owns the oil and gas it produces, even if some migrated from under a neighbor's tract, with no liability for the drainage. The neighbor's remedy is to drill their own well. The Texas Railroad Commission regulates oil and gas spacing and production to prevent waste and protect each owner's fair share.

Oil and gas move underground, so Texas needed a rule for who owns what. The answer is the rule of capture. A landowner who lawfully drills a well and produces oil or gas owns it, even if some of it drained over from a neighbor's property. The landowner owes the neighbor nothing for that drainage.

The neighbor is not helpless. Their remedy is to drill their own well and capture their share, sometimes called the rule of go and do likewise. To keep this from turning into a free-for-all that wastes the resource, the Texas Railroad Commission regulates oil and gas. Despite its name, the Railroad Commission today mainly oversees oil and gas. It sets well spacing and production limits to prevent waste and protect each owner's correlative rights, meaning their fair share of a common reservoir.

Groundwater rights in Texas

Snippet answer: Texas groundwater also follows a rule of capture, so a landowner may generally pump water from beneath their land even if it draws from a neighbor. In Edwards Aquifer Authority v. Day, the Texas Supreme Court held that a landowner owns the groundwater in place as a property interest. Groundwater conservation districts regulate pumping, while surface water in rivers belongs to the state.

Water splits into two very different legal buckets in Texas, and the exam can test the difference.

Groundwater, the water beneath the surface, follows a rule of capture much like oil and gas. A landowner may generally pump groundwater from under their land, even if it pulls water from beneath a neighbor, with only narrow limits like willful waste or malicious harm. In Edwards Aquifer Authority v. Day (2012), the Texas Supreme Court held that a landowner owns the groundwater in place as a vested property interest, so overly strict limits could raise a takings claim. Pumping is regulated by local groundwater conservation districts.

Surface water, the water in rivers, streams, and lakes, is different. In Texas it belongs to the state, and the right to use it is granted through permits under a prior appropriation system. Historic riparian rights and seller disclosure of water service are covered in the Texas water rights guide. The quick contrast: groundwater is captured by the landowner, while surface water is owned by the state.

Mineral reservations in a Texas sale

Snippet answer: Because Texas minerals are often severed, a seller may reserve all or part of the mineral estate when selling the surface. Texas uses the promulgated TREC Addendum for Reservation of Oil, Gas, and Other Minerals to document that reservation. The title commitment shows mineral reservations as exceptions, so a buyer knows whether the minerals convey.

For an agent, mineral rights are not just theory. Many Texas properties have severed minerals, so a residential or rural buyer may be getting the surface only.

When a seller wants to keep all or part of the minerals, Texas has a promulgated form for it: the TREC Addendum for Reservation of Oil, Gas, and Other Minerals. It is attached to the contract and spells out how much of the mineral estate the seller keeps and whether the seller waives the right to use the surface. The title commitment then lists prior mineral reservations as exceptions, and a survey and the deed history show what has already been severed. The practical takeaway for a buyer is simple: do not assume the minerals come with the land, and use the right addendum when the seller reserves them.

Common exam traps to remember

Snippet answer: Mineral and surface questions punish a few confusions: forgetting the mineral estate is dominant, thinking minerals always convey with the surface, mixing up groundwater and surface water, and missing that the mineral estate has five separable rights.

• The mineral estate is dominant. The mineral owner can use the surface as reasonably necessary, subject to the accommodation doctrine.
• Minerals do not always convey. In Texas they are often severed, so a surface buyer may get no minerals.
• Groundwater is captured, surface water is the state's. A landowner may pump groundwater, but river water belongs to Texas and needs a permit.
• The mineral estate has five rights. Develop, lease, bonus, delay rental, and royalty can each be owned separately.
• The Railroad Commission regulates oil and gas. Not railroads, despite the name.

You can drill these against timed Texas questions in the free practice test, and look up any unfamiliar term in the Texas real estate glossary.

Original practice questions

Use these to check yourself. They are written for practice and are not copied from any real exam.

Question 1. In a Texas split estate, the mineral owner and the surface owner disagree about placing a well. Whose estate is dominant?

• A) The surface estate
• B) The mineral estate
• C) Neither, they are equal
• D) Whoever bought first

Answer: B. In Texas, the severed mineral estate is dominant. The mineral owner has an implied right to use as much of the surface as reasonably necessary to produce the minerals, subject to the accommodation doctrine from Getty Oil v. Jones. (Original question.)

Question 2. Under Altman v. Blake, which of the following is one of the five rights of a Texas mineral estate?

• A) The right to zone the property
• B) The executive right to lease
• C) The right to a homestead exemption
• D) The right to prevent all surface use

Answer: B. The five rights are the right to develop, the right to lease (the executive right), the right to bonus, the right to delay rentals, and the right to royalty. The executive right to lease is one of them. (Original question.)

Question 3. A landowner drills a lawful well and produces gas, some of which migrated from beneath the neighbor's land. What does Texas law say?

• A) The landowner must pay the neighbor for the drained gas
• B) Under the rule of capture, the landowner owns the gas and owes nothing, and the neighbor may drill their own well
• C) The gas belongs to the state
• D) The well is illegal

Answer: B. Under the rule of capture, the producer owns the oil or gas from a lawful well, even if it drained from a neighbor, with no liability. The neighbor's remedy is to drill their own well. The Railroad Commission regulates spacing to protect fair shares. (Original question.)

Question 4. In Texas, who owns the water in a flowing river, and who may capture groundwater beneath their land?

• A) The landowner owns both
• B) The state owns river water, and the landowner may generally capture groundwater
• C) The state owns both
• D) The federal government owns both

Answer: B. Surface water in Texas rivers and streams belongs to the state and is used by permit. Groundwater follows a rule of capture, and under Edwards Aquifer Authority v. Day the landowner owns the groundwater in place. (Original question.)

Frequently Asked Questions

For quick answers to every common Texas exam question, see the Texas real estate exam FAQ.

What is a split estate in Texas?

A split estate exists when the surface estate and the mineral estate of the same land are owned by different people. Minerals are severed by a reservation in a deed or by a separate mineral deed. After severance, the surface owner and the mineral owner hold separate property interests in the same tract, each with its own chain of title.

Is the mineral estate or the surface estate dominant in Texas?

The mineral estate is dominant. When minerals are severed from the surface, the mineral owner has an implied right to use as much of the surface as is reasonably necessary to explore for and produce the minerals. Under the accommodation doctrine from Getty Oil v. Jones, the mineral owner may have to accommodate an existing surface use when a reasonable alternative exists.

What are the five rights of a Texas mineral estate?

Under Altman v. Blake, the five separable rights are the right to develop, the right to lease (the executive right), the right to receive bonus payments, the right to receive delay rentals, and the right to receive royalties. Each is a distinct property interest that can be conveyed or reserved on its own.

What is the rule of capture in Texas?

The rule of capture says a landowner who drills a lawful well owns the oil and gas it produces, even if some migrated from beneath a neighbor's land, with no liability for the drainage. The neighbor's remedy is to drill their own well. The Texas Railroad Commission regulates spacing and production to prevent waste and protect fair shares.

Who owns groundwater in Texas?

Under the rule of capture, a Texas landowner may generally pump groundwater from beneath their land even if it draws from a neighbor. In Edwards Aquifer Authority v. Day, the Texas Supreme Court held that a landowner owns the groundwater in place as a property interest. Pumping is regulated by local groundwater conservation districts. Surface water in rivers, by contrast, belongs to the state.

Do mineral rights transfer when I buy a house in Texas?

Not always. Texas minerals are frequently severed, so a buyer may receive only the surface estate. A seller can reserve the minerals using the TREC Addendum for Reservation of Oil, Gas, and Other Minerals, and the title commitment lists prior mineral reservations as exceptions. Never assume the minerals convey with the surface without checking.

Sources and Methodology

This article was reviewed against Texas primary sources on July 21, 2026. The concept of a split estate, severance of minerals by reservation or mineral deed, and the vertical division of surface and subsurface rights reflect settled Texas property law. The rule that the severed mineral estate is dominant, and the accommodation doctrine that can require a mineral owner to accommodate an existing surface use when a reasonable alternative exists, come from the Texas Supreme Court decision in Getty Oil Co. v. Jones, 458 S.W.2d 93 (Tex. 1971). The five separable attributes of the mineral estate, the right to develop, the right to lease or executive right, the right to bonus, the right to delay rentals, and the right to royalty, come from Altman v. Blake, 712 S.W.2d 117 (Tex. 1986). The rule of capture for oil and gas, and the role of the Railroad Commission of Texas in regulating spacing and production to prevent waste and protect correlative rights, reflect Texas oil and gas law. The rule of capture for groundwater, and the holding that a landowner owns groundwater in place as a vested property interest, come from Edwards Aquifer Authority v. Day, 369 S.W.3d 814 (Tex. 2012), with pumping regulated by groundwater conservation districts under the Texas Water Code. The state's ownership of surface water is administered under the Texas Water Code. The reservation of minerals in a residential sale is documented on the promulgated TREC Addendum for Reservation of Oil, Gas, and Other Minerals. Case law and statutes can change, so verify the current Texas sources before relying on any point in practice.

Official Source Links

• Getty Oil Co. v. Jones, 458 S.W.2d 93 (Tex. 1971)
• Altman v. Blake, 712 S.W.2d 117 (Tex. 1986)
• Edwards Aquifer Authority v. Day, 369 S.W.3d 814 (Tex. 2012)
• TREC: Addendum for Reservation of Oil, Gas, and Other Minerals
• Railroad Commission of Texas: Oil and Gas

This post is educational content for Texas real estate sales agent candidates. It is not legal advice. Mineral, surface, and water rights in a real transaction depend on the deeds, leases, and current law, and Texas oil and gas law is complex, so confirm the current Texas statutes and Texas case law and consult a licensed attorney before you rely on any point in a real situation.