One possibility is that his own house
symbolizes his private life, after retiring from office.1 But this would make the statement superfluous, because naturally people live in their own houses. Another possibility is that the term refers to the royal palace. This latter option is attractive, in light of his regal conduct. The house symbolizes Gideon’s governmental establishment. The meaning of the word [to live] is to enter into office, and the meaning of the passage therefore is that Gideon went and sat on his throne of leadership, and the passage seeks to intimate that this resembled a royal dynasty.
2,3
29 Jerubbaal the son of Joash went and lived in his own house.