The flexible spaces of this group of houses are refers to spaces that can be separated or connected turning into a unique space with different characteristics from the ones that they had when they were separated; they can have a different use or can turn into a transitional space between the exterior and the interior. To get this type of spaces they use mobile transparent divisions. This system gets spaces with a special characteristic that probably can’t be get with a rigid division of a house. These divisions and these spaces haven’t got the same characteristics that ones that are separated, so it is a good option for flexible uses. A rigid use of the rooms couldn’t work correctly with this system, so it is important to be sure that the use of the building is according to the system.