Our overall intention was to analyze the environmental comfort (thermal, natural lighting, ventilation and sound levels) performance of self-constructed houses in Apucarana, in Santo André city, situated in the metropolitan area of São Paulo. Typical examples of housing were selected and evaluation of comfort and energy use undertaken. The analysis have been based on the Post Occupancy Evaluation methods and computer simulations using Arquitrop 3.0 software. Based on this study, potential solutions according to the available materials and technology were proposed to the community to achieve a satisfactory level of indoor climate comfort. Conference Topic: 3.2 Modelling and Simulation.