The third volume of the Sustainable Urban Development Series outlines the BEQUEST toolkit that provides the means by which to link the protocols with the assessment methods currently available to evaluate the sustainability of urban development. It details the decision support mechanisms developed for users of the system to select the assessment methods appropriate for a variety of evaluations. Sustainable Urban Development Volume 3: A Toolkit for Assessment provides case studies drawn from locations across Europe and provides best practice examples demonstrating which protocols planners, property developers, design and construction professionals have followed and how they have selected the assessment methods needed to evaluate the sustainability of cities, districts, neighbourhoods and buildings.