In order to tackle the problem of the shortage of affordable housing, the Office of the Deputy Prime Minister (ODPM) has been set a Public Service Agreement (PSA) target to achieve a better balance between housing availability and demand in all English regions whilst ensuring sustainable development which recognises environmental concerns. This joint study by the Audit Commission and National Audit Office focuses on one strand of the PSA target, relating to improving the availability of affordable housing in high demand areas. The report also identifies ten areas where efficiencies are likely to be achieved in the social housing funding system, and it makes a number of recommendations for national, regional and local bodies to improve both efficiency and effectiveness of the delivery chain, highlighting the need to increase the speed of delivery and to reduce the unit cost of housing.