Here is the law in Texas regarding criminal trespass. Note that very specific requirements exist regarding notification of a person that they are trespassing. It typically is a class C misdemeanor....partial excerpts below...net= no big deal
(e) A person commits an offense if without express consent or if without authorization provided by any law, whether in writing
or other form, the person:
(1) enters or remains on agricultural land of another;
(2) is on the agricultural land and within 100 feet of
the boundary of the land when apprehended; and
(3) had notice that the entry was forbidden or
received notice to depart but failed to do so.
(d) An offense under Subsection (e) is a Class C misdemeanor
unless it is committed in a habitation or unless the actor carries a
deadly weapon on or about the actor's person during the commission
of the offense, in which event it is a Class A misdemeanor. An
offense under Subsection (a) is a Class B misdemeanor, except that
the offense is a Class A misdemeanor if:
(1) the offense is committed:
(A) in a habitation or a shelter center;
(B) on a Superfund site; or
(C) on or in a critical infrastructure facility;
or
(2) the actor carries a deadly weapon on or about his
person during the commission of the offense.
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Class C Misdemeanor Punishment--
Texas Penal Code section 12.23
Under Texas Law, a Class C Misdemeanor offense is punishable by:
a) NO Confinement in jail;
b) A fine not to exceed $500.
Community Supervision and a Class C Misdemeanor
A person convicted of a Class C Misdemeanor in Texas MAY be eligable for up to 180 days of deferred disposition instead of a final conviction.
(c) Conviction of a Class C misdemeanor does not impose any legal disability or disadvantage.