The design of social housing in Colombia is not sustained under bioclimatic conditions, which leads to a comfort deficit, due to the lack of strategies in housing. The present investigation analyzes the lived situation of a social interest housing in PVC of the Ciudad Bicentenario neighborhood; in the city of Cartagena which is designed without any bioclimatic parameter or taking into account the conditions of the environment, based on the conditions perceived by a family in the neighborhood. Followed by the situational analysis with the family and the housing problems, a situational flow chart is established, which allows us to make an approach to the system, delimiting the scales and the scopes, determining the products as the optimal model and the adaptable model. For the optimal model an ordering scheme is made starting with the macro scale; on the meso scale, an urban design is projected; and finally, for the micro scale, a housing prototype is proposed to provide a solution to a problem in general, based on flexible construction. For the adaptive model, an ordering scheme is also made on the macro scale: in the meso, an improvement is projected in the different routes; and finally, in the micro, an improvement is made in housing under bioclimatic conditions and flexible constructions, as an integral key to achieving sustainable development in both models