This report, based on work commissioned by the National Housing Federation from The King’s Fund and the New NHS Alliance, looks at the economic case for closer working between the housing and health sectors. The authors demonstrate how housing associations provide a wide range of services that produce health benefits, which can both reduce demand on the NHS and create social value. The report concludes that there is no one piece of economic analysis that will persuade health providers or commissioners to work with or commission housing associations. However, the case studies in the report illustrate the economic benefits that housing association can provide through: providing safe, decent homes that enhance wellbeing - this has health impacts that are valued, and can save the NHS money; alleviating the overall cost burden of illness and treatment; helping to offset and reduce costs of delivering health care to individuals; demonstrating cost-effectiveness in helping to meet the objectives of the NHS and of improving health more broadly; and demonstrating the cost–benefits of their interventions in terms of the value of improvements to people’s health and savings to the NHS.