Strategies for Sustainable Innovative Affordable Housing (SIAH) for low income families in Africa: A rapid review study 

Abstract Housing is a fundamental human need, yet access remains a significant challenge in Africa, particularly for low-income families. Rapid urbanization exacerbates this issue, highlighting the need for innovative and sustainable housing strategies that can support urban growth and improve living conditions for these families. This study employs a rapid review methodology to identify and analyze sustainable innovative affordable housing (SIAH) strategies suitable for low-income families in African cities. Through a comprehensive literature search and thematic analysis, the review explores housing strategies such as mixed-use developments, incremental housing, low rental housing, inclusionary housing, 3D printing, upcycling, micro-housing, community-led housing, co-housing, and green building practices. These approaches/strategies are not mutually exclusive and can often overlap or be integrated to address housing challenges comprehensively. The findings highlight that these strategies can significantly enhance spatial justice and promote sustainable urban development. However, challenges such as material scarcity, regulatory complexities, and societal resistance must be addressed. The study emphasizes the need for policy support, public–private partnerships, community engagement, financial incentives, and capacity building to ensure successful implementation of these strategies. The paper contributes to the existing body of knowledge by providing actionable recommendations for policymakers, urban planners, and housing advocates, aiming to foster inclusive, equitable, and sustainable cities in Africa. Future research could delineate the strategies into distinct categories based on their nature and purpose (strategy, method/tool, practice etc.), providing a clearer framework for understanding and implementation.