The illusion materialized through the looking glass allows us to perform spatial actions where it was not possible at first glance, to expand or reduce spaces, to make uses appear or disappear, to cause material levitations of built volumes, generating surprise in the viewer of a changing environment, within an apparently static and defined space. I. The commission. The house to be refurbished is located in Calicanto, Valencia, a garden house development linked to the mountain landscape. The sufficient slope in the plot allowed the existing construction to be developed on two floors: one with direct access from the street and the second one, to be refurbished, on a lower level with three free façades in relation to the park and the pool. The preexistent building was organized according to use, being the level related to the access specifically allocated to housing and placing the service floor and garage in the semi-basement. The developer family wanted to regain the semi-basement level, a relegated space in the house, and with it all the moments shared as a family (cooking, playing, exercising, reading, resting), to be able to enjoy it alone or with friends.
