The objective of this study is to find a set of models that represent a divers of the patterns of everyday actions on the basis of one of the result of statistics about lifestyles. The models are expected to be used for building simulation as a condition. Even though human actions in a building are being dealt with in building simulation, the divesity of action patterns are ignored. If we want to explain the effect of lifestyls or attitudes towards something on energy consumtion, we need to take the diversity in consideration. This paper explains the sturucture of the models on the basis of stochastic process. The idea concerning how the parameters of the models are determined is also discussed.