Dude was just seen going in and coming out of a house under construction, this is burglary and a felony in Ga
Everything was legal under GA state laws.
Georgia Code Title 16. Crimes and Offenses § 16-7-21
(a) A person commits the offense of criminal trespass when he or she intentionally damages any property of another without consent of that other person and the damage thereto is $500.00 or less or knowingly and maliciously interferes with the possession or use of the property of another person without consent of that person.
(b) A person commits the offense of criminal trespass when he or she knowingly and without authority:
(1) Enters upon the land or premises of another person or into any part of any vehicle, railroad car, aircraft, or watercraft of another person for an unlawful purpose;
(2) Enters upon the land or premises of another person or into any part of any vehicle, railroad car, aircraft, or watercraft of another person after receiving, prior to such entry, notice from the owner, rightful occupant, or, upon proper identification, an authorized representative of the owner or rightful occupant that such entry is forbidden; or
(3) Remains upon the land or premises of another person or within the vehicle, railroad car, aircraft, or watercraft of another person after receiving notice from the owner, rightful occupant, or, upon proper identification, an authorized representative of the owner or rightful occupant to depart.
Arbery's entrance and looking around an open construction site was definitely legal.