This study has developed a framework for the delivery of sustainable and affordable housing to carter for the low-income population of Greater Port Harcourt City. The objectives of this study among others were to: examine UN-Habitat guidelines for acceptable and sustainable social housing provision, describe past efforts of the Government of Nigeria to provide housing for the poor in the Greater Port Harcourt City area; describe the nature of the suggested framework for the administration and provision of sustainable social housing within Port Harcourt city. The study adopted the mixed methods research approach, targeted at triangulating findings from quantitative and qualitative data. Consequently, the opinions of various professional in the built industry; unit heads of government agencies involved in physical planning and managers of selected Primary Mortgage Institutions were sought and analyzed. In all, the study engaged four target populations, namely: