If you want a ground floor in line with the dimensions of the Lundby dollhouse 4-room, the following combinations are suitable: - 1 pc Room 44 cm + 1 pc Room 22 cm, - 3 pcs Room 22 cm, - 2 pcs Room 33 cm. NOTE! This combination requires you to remove the part (2B / 2F) in the middle of the bottom of the Lundby dollhouse, which some older Lundby dollhouses do not allow. We encourage you to think outside the box! As a suggestion, you can use 2 Lundby Rooms 44 cm to get a nice roof terrace for the Lundby dollhouse. The possibilities are many!