As creative creatures, people like to change and customise their environments. In the computing world, this has led to a growing demand for people to be able to customise their ‘electronic spaces such personal computers and mobile phones’. In this work-in-progress paper, we argue that this reasoning can also be applied to AmI (Ambient Intelligence) Environment. However, existing computational models have significant shortcoming that act as a barrier to implementing the concept of end-user development in AmI environments. This paper presents a scenario that illustrates the need for a more functional and robust underlying computational model. We argue that OO (object-oriented) concepts could form the basis of such a system and, to these ends, present preliminary ideas for an object oriented end-user development system for building AmI applications.