139 SCHULTZ is a housing building located in San Rafael neighborhood in Mexico City. The 6-level building is made up of 21 departments of different typologies ranging from 60 m2 to 120 m2 approximately, with an interior distribution that favors ventilation and natural lighting in all living areas, with views towards their inner courtyards as well as the Street. The material concept for the interior design of each unit was the simplicity of the contemporary design with the details of Mexican architecture. A hybrid where modern sensibility is mixed with local materials.