The challenge was to define a housing unit volume in a fragmented land; on one hand the two volumes (higher on the main street and a bottom in the back street), and secondly the geometry of the solar plant by the chamfer on the corner of Main Street regulatory different heights. Also find the right on a plot of considerable size and with three facades corner each other building types. In short, provide maximum architectural quality in an existing urban fabric life ye users of a small-sized homes. The solution has been to define a unitary facade formed from a double skin: one built by the facade itself and one defined by the screens to protect views and sunlight where semiexterior housing activity develops, balconies- terraces and clotheslines. He has also been built bodies define two different heights separated by a central courtyard where the bedrooms and open communication centers. Environmental conditions, solar orientation and conditions of sustainability and equality between foster homes project organization around a courtyard.