About this book:

"Upgrading the Margin" provides a comprehensive, evidence-based framework for transforming informal settlements into integrated, sustainable urban neighborhoods. Moving beyond the historical binary of "formal versus informal," the book argues that slums are central to urban productivity and requires a shift from top-down eradication to inclusive, in-situ upgrading. By blending rigorous academic evaluation methods, such as Randomized Controlled Trials (RCTs) and mixed-method diagnostics, with practical implementation strategies, the text offers a roadmap for city planners, NGOs, and policymakers to address the systemic causes of urban marginality rather than merely treating its physical symptoms.

The core of the book explores the interconnected dimensions of urban upgrading: land tenure security, incremental housing finance, WASH (Water, Sanitation, and Hygiene) infrastructure, and climate resilience. It emphasizes that physical improvements are unsustainable without corresponding governance reforms and "social contracts" that clarify the roles of municipalities, utilities, and residents. Detailed chapters on the political economy of informality and the specific needs of gender, youth, and marginalized groups highlight that technical solutions must be politically savvy and socially inclusive to prevent elite capture or unintended displacement of the most vulnerable.

Drawing on major international case studies—including Rio de Janeiro’s Favela-Bairro, Nairobi’s Kibera, and India’s national housing missions (JNNURM and PMAY)—the book analyzes why projects succeed or fail. It identifies common implementation breakdowns, such as unrealistic timelines, lack of maintenance budgets, and tokenistic community participation. The text advocates for "incrementalism," a strategy that respects the way low-income households actually build and invest over time, supporting them through flexible regulatory standards, microfinance, and technical assistance rather than demanding immediate, unaffordable compliance.

The book concludes with a call for operational rigor, providing checklists and operational models for procurement, digital mapping, and monitoring and evaluation. It posits that upgrading the margin is a continuous public endeavor that requires a long-term commitment to data-driven adaptation. Ultimately, the work suggests that by combining community-led co-production with institutional accountability and blended capital, cities can deliver housing, health, and livelihood outcomes that are both equitable and resilient in the face of rapid urbanization and climate change.

What You'll Find Inside:

• Evidence-based upgrading: combining rigorous evaluation (RCTs, mixed methods) with practical implementation to achieve measurable health, safety, and livelihood gains.
• Land tenure security as a foundation: pathways for regularization that protect residents, avoid displacement, and unlock investment while addressing affordability and inclusion.
• Operational models for finance, governance, and community participation: blended capital, clear roles, and co-production to ensure sustainability and equity.
• Climate-resilient and health-focused infrastructure: integrating WASH, mobility, drainage, and hazard mitigation tailored to informal settlement contexts.
• Global case study insights: trade-offs between in-situ upgrading and resettlement from Rio’s Favela-Bairro, Kibera, and India’s JNNURM/PMAY programs.

Who's It For:

This book is designed for city planners, municipal officials, NGO practitioners, donor agency staff, and urban development professionals working on slum upgrading and informal settlement interventions. It also serves as a valuable resource for students and researchers in urban planning, public policy, and international development seeking evidence-based tools, case studies, and actionable frameworks for equitable and sustainable upgrading.