This publication is part of the activities of the Global Network for Sustainable Housing (GNSH) managed by the UN-Habitat Housing Unit. The GNSH has been created to contribute to the development of sustainable and affordable housing solutions in developing countries and emerging economies. The GNSH has a specific focus on improving the social, cultural, economic and environmental sustainability of slum upgrading, reconstruction, large-scale affordable housing and social housing programmes. The handbook presents practical solutions to outgrow accessibility barriers for persons with disabilities and older persons in the contexts of slum upgrading, reconstruction, large-scale affordable and social housing programmes. It provides technical guidelines and best practices for policymakers, local authorities, urban planning and construction/housing practitioners in the private and public sectors and the staff of international and local humanitarian organizations and development agencies. The handbook works as a communication tool to raise awareness regarding the accessibility of affordable sustainable housing sector.