Abstract: Kampung alley is a street network that perceived as a social space due to its function for community. One problematic thing that occur in tourism kampung alley is a significant change from activities taken place in the alley that have commercial-tourism functions and open for public. This change leads to the requirement of kampung alley to have high accessibility and openness to outsider. In this term, it will change the territoriality pattern as well as its meaning for residents. Territoriality is one kind of environmental behavior study about spatial usage of built environment. Territoriality has strong engagement with cultural and social context. This paper analyze that there are some changes and ambiguity of territoriality in ...