Split estate

In the United States, a split estate is an estate where the property rights to the surface and the underground are split between two parties. It is the result of Homestead Acts such as the Alaska Native Claims Settlement Act (1971) or the Stock-Raising Homestead Act (1916).^[1]

In the 49 United States practicing British common law (the 50th, Louisiana, derived its law from French and Napoleonic Code), a split estate is created when the original fee simple owner sells or otherwise loses ownership of the subsurface, often called the mineral estate. Executor rights transfer in whole, unless otherwise reserved, and administration of the estate carries the same rights, liabilities, and privileges the surface estate does.

In the Louisiana, severability of estate is legal and common, however a particular law practice similar to easements in English law allows the reversion of the mineral estate to the current surface owner if the mineral estate is not actively engaged in productive activity. This is similar to squatter's rights in other states; however other states do not allow this for the mineral property.

Who owns the right to exploit the underground is important in case it contains minerals, oil, or natural gas.^[2] It is currently the object of controversies ^[3] because some landowners are concerned about the nuisance and environmental impact ^[4]

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