It is widely assumed that living in damp and draughty housing can seriously aggravate pre-existing health conditions, such as asthma. It is also expected that tackling such issues will lead to improved health among residents. However, to date very little research has been undertaken to determine if such measures do result in lower levels of morbidity. The new duties of partnership between local councils and health authorities also require greater coordination on issues such as housing and health, and establishing how to do this effectively is important.