Ramban on Genesis 33:17/רמב"ן על בראשית ל״ג:י״ז

1AND HE BUILT FOR HIMSELF A HOUSE. It is possible that the place was a location which had no city, and he therefore found it necessary to build for himself a house and make booths for his cattle. Or it may be that the expression, and he built for himself a house, means that he built for himself a large house with a strong tower to fortify himself against Esau.