In this paper we argue that for environmental psychology it is essential and functional to have a sound classification of behavioral interventions. At first well known classification systems are depicted. Based on a model about the mode of action of the intervention techniques a classification system is developed in which the techniques can be grouped in an environmental psychological meaningful way. Corresponding to the developed classification all behavioral change techniques can be divided into two groups accordingly whether the techniques are changing individual preferences for behavior or whether they activate or encourage behavioral change. In the first group we find the traditional distinction between structural and person focused techniques and in the second group between situational and dissemination focused techniques. Further subdivisions follow aspects of psychological and intervention techniques because each class of techniques is determined due to certain problems to be tackled when realizing a behavioral change campaign. Furthermore the choice of the intervention techniques based on the proposed classification is discussed and the classification itself is reviewed.