The report recalled the determinants of air quality in buildings and the dysfunctions which are most commonly found in buildings. They have their roots in economic, sociologic, demographic and technologic changes which occurred in last decades. Then, the authors stated what should be the health issues at each step of the life of a building, namely planning by the architect, construction, maintenance, rehabilitation and, in some instances, control by health authorities. These shortcomings back up the advices to introduce health issues in the management of buildings, to include basic knowledge on housing in school programs and health in the training of professionals, lastly to improve and speed up legal procedures to better control unhealthy housing.