Public-Private Partnerships (PPPs) are increasingly used to finance affordable housing, offering a viable solution to address the global housing crisis. This paper examines PPP frameworks, their effectiveness, and key models such as Build-Operate-Transfer (BOT), Design-Build-Finance-Operate (DBFO), and Lease-Develop-Operate (LDO). Successful PPPs rely on clear regulatory environments, transparent procurement, risk-sharing, and stakeholder engagement. Case studies from the UK, Singapore, and South Africa demonstrate the practical application of these models, highlighting the importance of supportive policies and private sector involvement. The review emphasizes the need for effective risk management, regulatory support, and inclusive stakeholder participation to ensure the sustainability and success of affordable housing projects. Lessons learned from these models underscore the importance of tailored approaches, transparent processes, and long-term collaboration between public and private sectors. Policy recommendations include developing clear legal frameworks, promoting transparent procurement, and fostering community involvement to enhance the effectiveness of PPPs in delivering affordable housing. Overall, PPPs offer a promising strategy for addressing housing affordability challenges, with the potential to significantly improve housing availability and quality globally.Public-Private Partnerships (PPPs) are increasingly used to finance affordable housing, offering a viable solution to address the global housing crisis. This paper examines PPP frameworks, their effectiveness, and key models such as Build-Operate-Transfer (BOT), Design-Build-Finance-Operate (DBFO), and Lease-Develop-Operate (LDO). Successful PPPs rely on clear regulatory environments, transparent procurement, risk-sharing, and stakeholder engagement. Case studies from the UK, Singapore, and South Africa demonstrate the practical application of these models, highlighting the importance of supportive policies and private sector involvement. The review emphasizes the need for effective risk management, regulatory support, and inclusive stakeholder participation to ensure the sustainability and success of affordable housing projects. Lessons learned from these models underscore the importance of tailored approaches, transparent processes, and long-term collaboration between public and private sectors. Policy recommendations include developing clear legal frameworks, promoting transparent procurement, and fostering community involvement to enhance the effectiveness of PPPs in delivering affordable housing. Overall, PPPs offer a promising strategy for addressing housing affordability challenges, with the potential to significantly improve housing availability and quality globally.