This publication is part of the activities of the Global Network for Sustainable Housing (GNSH) managed by the UN-Habitat Housing Unit. 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.