Sustainable Housing Finance in Developing Economies: A Review of Financial Deepening and SDG 11 Alignment

Sustainable housing finance has emerged as a critical tool for achieving inclusive, resilient, and environmentally responsible urbanization in developing economies, yet access to affordable, climate-resilient housing remains limited. Rapid urbanization, weak institutional frameworks, high borrowing costs, and underdeveloped mortgage markets exacerbate housing deficits, particularly for low-income populations. Recent developments in financial deepening, including the expansion of banking services, fintech innovations, and microfinance programs, provide new opportunities to address these challenges, but integration with sustainability objectives remains uneven. This review synthesizes existing literature and practical experiences to examine innovative mechanisms that can enhance sustainable housing finance, including green mortgages, ESG-linked lending, climate risk-adjusted finance, blended financial instruments, and digital financial technologies. The analysis identifies persistent gaps in the alignment of affordability, environmental sustainability, and financial viability, highlighting the need for context-specific solutions that mobilize both domestic and international capital. Policy frameworks that incentivize sustainable practices, capacity building for financial institutions and developers, and the adoption of data-driven and technology-enabled solutions are emphasized as essential for scaling impact. The review argues that sustainable housing finance should be understood as a strategic nexus of finance, social equity, and environmental resilience capable of accelerating progress toward SDG 11 while stimulating local economic growth.