Many of the common inherent problems in urban decay (as discussed in earlier chapters in this book, and also captured by Roberts's (2000, p. 16) and Otsuka and Reeve (2007)) require policy responses that can generally be classified under six main thematic areas: the relationship between poor physical infrastructure conditions and social deprivation; the continuous need for physical replacement of old urban fabrics; the strong links between economic success and urban prosperity; the drive to maximize beneficial uses of land while avoiding unnecessary urban sprawl; the changing political climate and priorities expressed in changing urban policies; and the emerging and growing importance of the sustainability agenda. the relationship between poor physical infrastructure conditions and social deprivation; the continuous need for physical replacement of old urban fabrics; the strong links between economic success and urban prosperity; the drive to maximize beneficial uses of land while avoiding unnecessary urban sprawl; the changing political climate and priorities expressed in changing urban policies; and the emerging and growing importance of the sustainability agenda.