The ground floor was the area of the private family life of the Jeannerets.

The function of the rooms according to the official plan of 1912 by Charles-Edouard Jeanneret.
1 Room (of Charles-Edouard Jeanneret)
2 Linen closet
3 Bedroom (of the parents)
4 Dressing room (this area became a gallery)
5 Room (changed to a bathroom)
6 Atelier (of Charles-Edouard Jeanneret)

The Jeanneret brothers (Charles-Edouard’s room).