In this paper we study mobile home automation, a field that emerges from an integration of mobile application platforms and home automation technologies. In a conceptual introduction we first illustrate the need for such applications by introducing a two-dimensional conceptual model of mobility. Subsequently we suggest an architecture and discuss different options of how a user might access a mobile home automation service and the controlled devices. As another contribution we implemented a mobile home automation service, which we named REMOTILE. This prototype helps us to discuss typical components, such as modules that integrate various home automation devices.