Then the state/government can "condemn" the property and take it under eminent domain laws, through due process.
I do not believe there is anything in the USA comparable to this "quirky" British law - nor should there be.
I do not believe there is anything in the USA comparable to this “quirky” British law - nor should there be.
Under certain circumstances, a trespasser can occupy and gain legal ownership to land via the doctrine of “Adverse Possession.” To qualify as adverse possession sufficient to get ownership, the trespasser’s occupation of the land typically must be:
hostile (meaning without permission, though the definition can vary)
actual (meaning physical occupation)
open and notorious (meaning the possession is obvious to onlookers), and
exclusive and continuous for a certain period of time.
The time period that the trespasser must occupy the land varies by state. To find the period for your state, see the table below.
You might want to look up "adverse posession" laws. It's a common feature of most nations that inherit the British common law, like we did.
Adverse possession is part of the common law and is covered by state statute AFAIK in all 50 states. The requirements to satisfy all the elements of adverse possession will differ by state, but it definitely exists.