The Project Book is a design-focused workbook that has been developed to help guide decision-making over the course of an affordable housing development project. It is intended to be used as a field manual to help structure and record key design decisions as they are made. The Project Book is unique in that it is designed to be used interactively with the Affordable Housing Design Advisor, an electronic tool containing a wealth of detailed resources, links, illustrations and case studies which complement and expand on the information contained in the printed workbook.