The house is located in a building constructed in 1893 by the architect JuanBautista Lázaro. It is a building with a mixed structure of load-bearing walls andslabs with a metallic structure and partitioned vaults (volta catalana) introducedby the architect in Madrid after his time in Barcelona in 1888. The building, withits corral structure, is partially protected, including the façade and mainstaircase.

Located in an old protected corrala (a type of housing found in old Madrid),the70m2dwelling,maintains the original free height of 4metres in its entiresurface, giving it a unique character. The superb interior volume is presentedemptywith no additions. With a parallelepiped floor plan, it is situated with a6.35 m front to the main façade and a depth,facing the courtyard of the corralaof 12.70m. This,guarantees double east/west orientation and cross ventilation.

The project was born with the idea of ridding the house of all the layers that,throughout its life, have been added to it and leaving it emptyas a container.Once it has been emptied, the interior is arranged by means ofa single elementin the form of a fitted wall. This single element is placed slightly rotated withrespect to the main party walls.This gesture achieves two things. The first is toenlarge the public area of thedwelling and the second to act as a boundarybetween the public and the private.Intentionally, this new equipped wall is 2.70 mhigh and does not reach up to4m from theroof, which guarantees the spatial continuity in the house.

In thisway, the concept of an empty container is not lost.The refurbishment of the house has been carried out according to energy andsustainability criteriaby the use of ecological breathablepaints, theincorporation of low-emission Climalit glass in the original wooden windows andtheconstruction of an insulated and waterproofed floor slab to guaranteeinterior comfort.In addition to this, the walls of the house with monolithic graniteplinthon the main façade of more than 70 cm guarantee unbeatable thermalinertia.

On a program level, the house has a large, bright living-dining room with largewindows to the outside, a fully equipped kitchenandabathroom with showerand toilet.

The corridor distributes the bathroom and the two bedrooms facingthe large inner courtyard of access and enjoyment of the house. The wholehouse has 4 metres of free height and is fullyaccessible as there are no stepsfrom the entrance door to the building.The property is located in the neighbourhood of Conde Duque, very close to themythical Plaza de las Comendadoras, where the convent that gives it its nameis located, and the Conde Duque Cultural Centre