Editorial

This first issue of 2005 contains a selection of some articles from the recent Open Building conference on Sustainable Environment held in Paris at the CSTB headquarters in September 2004. This issue signals the start of the regular publication of material dealing with Open Building projects either as additional articles in theme issues or as full open building issues twice a year. After more than thirty five years of experience Open Building is a recognizable part of mainstream Architecture in housing and in health care and renovation projects found in many different countries of the world. Open Building projects in general show how users are indispensable decision makers in the design process and act as forces of change and adaptability over time.