Project of duplex house projected for the city of san francisco de campeche. the project was designed with the aim of creating comfortable spaces talking about the topic of temperature and use of electrical energy; for that reason the idea of ??a house that segregates the public area of ??the private one by the change of levels was presented. the public zone is considered a warm zone that must accommodate temporary users; therefore, there are spaces for the public in general and spaces for services; while in the floor below ground level 0.00 are the bedrooms and a hall with lighting and natural ventilation. the bedrooms have a patio for proper ventilation and natural lighting.