The role of the urban informal sector is widely acknowledged in the development process of developing countries. As the urban informal sector, consisting of very small-scale economic activities, accounts for a substantial, and increasing share, of urban employment in most developing countries and as a large majority of the urban poor depend on such activities for their livelihood, any credible strategy to reduce urban poverty in these countries must pay due attention to this sector. This book talks about the opportunities and challenges of accommodating street enterprises in the urban built environment.