From circle to rectangle
There was a crucial moment in the history of domestication during the neolithic period related to form, which was the transition from circle to rectangle. The new configuration of the round single-room-house became the multi-room-house or grill house, based on narrow alonged rooms in a grid layout. The main function for the houses was to serve as storages and to separate labour activities, as the result of more permanent urban settlements for sedentary living, which also paved the way for increased accumulation of food and items. Rectangular configurations enabled subdivision, which became important in a functional and practical sense. The house as a place of living had turned into a house as a place of storing.

Sources
Family Horror – A critical history of domestic space. Aureli Pier Vittorio