Komentarz do Rodzaju 33:17

ויבן לו בית AND HE BUILT FOR HIMSELF A HOUSE — He stayed there eighteen months — summer, winter and summer again (Megillah 17a); for the first mention of Succoth (booths which are erected for the cattle) points to the summer (when booths are necessary for the cattle), the mention of building a house to the winter, and the second mention of booths to the next summer.

AND 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.

נסע סכותה, He journeyed towards Sukkot. The reason this place was called סוכות was because there Jacob built pens and shelters for his herds and cattle. The Torah purposely does not say לסוכות, "to Sukkot" because this would have led us to believe that this place had already been known by the name סוכות. You may well ask why the Torah bothered to mention the fact that Jacob called the name of the place where he built shelters for his animals סוכות. Perhaps the reason is that Jacob was the first human being who expended so much time, energy, and money in order to assure his animals a degree of comfort both in summer and in winter.