Biomass is a growing source of energy in the UK. This report investigates the opportunities for using wood fuel for space and water heating in commercial, public and domestic buildings. It outlines the fuels and boiler options and discusses supply chain, planning and regulations, economics and costs. Case studies illustrate 24 applications of biomass energy in a range of housing and commercial, educational and leisure buildings. The report concludes with a review of the case for renewable energy and the drivers that will influence the development of biomass fuel.