Located in Coyoacán is proposed to be an introverted and intimate house. The facade was made with local material called red “recinto” which is a volcanic type of stone. The house remains closed to the exterior. In the interior, the volumes and the organization of the space is planned around two huge ash trees and the principal intention is that every space would be differently related with each tree. The first tree is situated on the edge of the terrain on the side of the cobbled street where an impressive log is placed that looks as it was a plant pot of the ash tree in the house. The studio has a little patio that tops off the space and it´s illuminated as well as the concrete cube corresponding to the shower cabin in the studio bathroom. The second tree it is close to the core of the ground and it creates a central courtyard that brightens the rest of the house program. On one side the concrete stairwell being perforated by window circles in a random way framing some tree trunk angles. The kitchen is on the other side in the first level which it´s completely open in order to take advantage of the courtyard using the tree trunk as the place to eat outdoors. In the second level the master bedroom frames the tree trunk verticality with a squared vain that abstracts its texture. Taking advantage of the grandiose tree cortex inside the master bathroom, the tub extends slightly on the courtyard creating a direct window to the tree frond and the sky. This is how the house seems to be organized in slices that separates one from each other to allow the existence of the trees besides of obtaining light and natural ventilation by using this pauses. The same constructive system emphasizes those pauses generating a series of concrete frames where every interior façade produces a courtyard made of brick and wood cancels giving the house a character where the final result is set by the textures, the smells, the sounds and temperature. The Ash-Tree House is an introverted house but simultaneously is full of possibilities to be in contact with the nature and the environment, a house that feels intimate but it´s constantly opening to itself.