Social housing in Latin America is still a concern, and developing innovative and affordable solutions represents a major architectural challenge. Under this scenario, this paper aims to rethink and propose alternatives of habitability in low-income projects, regarding bioclimatic architecture and thermal comfort. The initial approach consists in evaluating a standard dwelling unit designed by "Un techo para Chile", a Chilean Non-Profit Organization that focuses in providing permanent social housing. Thermal comfort, ventilation, lighting, internal humidity and thermal bridges are the five main parameters taken into account. The conclusions from these results demonstrate the critical design features and lead to better suited proposals, improving the building skin performance, indoor environmental quality and the useŕs thermal comfort. The hardest challenge of this work consists in the limitations due to the amount of economic resources. The comparative analysis takes advantage of analytical tools, advanced simulation software, and in-situ measurements of a built project, resembling the case study, as maximum as possible, to the actual building.