Is planning permission needed? This is a frequently asked question in the complicated procedure of planning. This handbook aims to guide those involved in planning through the process, enabling them to determine whether planning permission is required when working on any building project, large or small. It not only explains relevant law, bot also considers the likely interpretation. This edition is updated to take into account the Town and Country Act 1990, the Town and Country Planning (use classes) Order 1987, the Town and Country Planning General Development Ordere 1988, as well as some 30 recent cases. Practical examples are provided throughout.