Continuous monitoring of well being is one of a number of new schemes under development that promise to reduce the UK's health care bill and ease the burden on carers and support organisations. Fundamental to its widespread adoption is the deployment of low-cost sensor networks in residential, sheltered and community settings. These networks must be capable of a variety of monitoring functions, the data from which is collated locally and then delivered to health care professionals over the national network. Delivering this data reliably and securely is central to BT's service offering. This paper describes our work to date in developing a sensor network that will be deployed in later trials of continuous well-being monitoring.