Launched as part of the Energy Efficient Mortgages Action Plan (EeMAP) initiative aimed at improving the energy efficiency of existing building stock in Europe looks at existing theoretical and practical barriers hindering the integration of sustainability aspects into risk assessment and valuation of properties for mortgage lending purposes. Examines the current role of the valuer within the mortgage origination process, the extent to which energy efficiency can be technically integrated into valuation and an evaluation of the body of research between a property's energy performance rating and its marker/rental value. First in series of reports looking at the relationship between energy efficiency and valuation in respect of mortgage lending. For follow up report looking at due diligence process see K121153 Energy efficient lending and valuation due diligence and for preliminary White Paper se K121154..