Contemporary architectural family house in a residential classified historic colonial zone of Chimalistac in Mexico city .It difficult to say anything else about another house , and this is what this is about, is a house made to order for a client, which is often more complex than developing a large building. The result depends on two factors: a good architect, but rather more of a good client.The context in which the house is inserted has an historic colonial character untouched by the unorganized sprawl that has occurred elsewhere.The fact of intervening in a historic area entries (INAH) raises the dilemma of adapting or blending into the context , but by ideology could not talk about the present and future with the language of the past.Fact generated some discussion with the INAH (National Institute of Anthropology and History) www.inah.gob.mx/ because their vision is to recreate the past even if this results in a pastiche , and finally and where the interaction between the inside and outside occurs our goal was to achieve the neutrality that would make the transition from the historical to the modernity of the interior. The fashionable and politically correct slogan nowadays is that everything must be sustainable over yet despite the good wishes and intentions, and after several runs to determine the relationships financial cost benefit, the only we could manage to improve was in energy saving light bulbs and intelligent control systems and sensors linked to timerand more efficient irrigation systems.The most important was the use of intelligent design to make the house better in comfort and climate, and the building design process in which no processing or transformation of materials such as stone, wood etc.was done, a system based on just in time logistics and a change in how the jobsite is managed ,with prefabrication and the inclusion of pre-finished items As part of the architectonic discourse and for reasons of durability and maintenance very few finishings were used , being concrete one of the most notable of the house for its ability that does not age and decay ,and the fact it acquires more dignity and history with time.One of the main objectives was to achieve the most natural light and views to the garden, and not to create a series of closed rooms but a series of spaces where the events happen and articulate wit one another .It is important to note that the entire house is designed in modules and multiples of feet and then generating different size of overlapping rectangles ,that became the generating pattern of the geometric theme of the house.