Abstract Introduction: This thesis focuses on the housing situation and sustainability in Manila, the capital of the Philippines. According to a report by the United Nations Human Settlements Programme, approximately 25% of Manila's population resides in substandard living conditions and informal settlements. The thesis is based on a case study conducted on the Estero De San Miguel pilot project, where a Post-Occupancy Evaluation (POE) study was carried out on the housing project. The findings revealed that relocating people from slums to the housing project and providing them with a home led to an improvement in the quality of life and sustainability in the project area. The aim of the study was to conduct a POE and assess the quality of life and identify areas for improvement in future low-budget projects. Method: The research methods are based on a combination of qualitative and quantitative methods. Interviews were conducted with architects and other key individuals involved in the project. Surveys were administered to residents, and personal observations were made regarding the quality of life. Plan analysis and area analysis were also conducted. Results: The case study resulted in answers obtained through surveys administered to the residents in the area and interviews with key personnel involved in the project, providing responses to the research questions. Analysis: The Estero De San Miguel Pilot Project (EDSM) has made a significant impact on improving the quality of life and sustainability within the project area. Previously, informal settlements were typically reconstructed outside the city center, resulting in limited access to employment, education, and social services. The residents lived in poverty within these informal settlements, with their needs neglected by both society and the government. Since relocating to the EDSM housing project, 72% of the residents have experienced notable improvements in their lives. This project has provided them with an opportunity to enhance their quality of life and foster a stronger, more supportive community. Discussion: The method, with its specific limitations, in this case study yields results that align with the study's purpose and thereby addresses the research question of the thesis. There is a strong correlation between the findings and the theoretical framework.