The growing population of cognitively impaired people combined to the scarcity of care giving resources compel for a new vision of assistance at home. But cognitively impaired people do not live alone all the time and the complexity of the devices and the services prevent to involve them in the process. These issues can be tackled in smart homes thanks to autonomic computing, multi-person localization, context awareness, and personalization. First, OSGi has to be adapted for building autonomic pervasive heterogeneous services that can be deployed and managed at distance and that owns self-management features. Then, a context aware multi-agent system for cognitive assistance is built on top of this layer for multi person localization, and personalization when there are many persons in a smart home