Within the framework of social sustainability, the studies that measure the contribution of houses allocated to the country's most vulnerable population are limited. This article presents a case study that assesses the contribution of a social housing project to social sustainability in the Region of La Araucanía, Chile. Here, the degree of social contribution for the Amuley Ruka project in Pitrufquén, Region of La Araucanía is determined. In this study, a pre-post assessment was used by triangulating the data obtained in field visits, interviews and document reviews. Thus, appropriate indicators were adjusted to measure multiple evaluation criteria and the measurement scales were standardized. All this makes it possible to determine the vulnerable situation of the beneficiaries, the effects on the context and the criteria to improve. The results obtained clarify the partial and total contribution of the social housing project. It is detected that the criteria Connectivity and access and Family support do not present significant differences resulting from the project. In addition, the criteria Community Health and Safety and Recreation infrastructure show a reduction in their contribution with respect to the social housing intervention.