In this paper, the characteristics of the spatial structure of courtyard style settlement, Baha/Bahi, originated from Buddhist Monasteries are illustrated. Firstly, the transition process of Baha/Bahi from a learning place of celibate monks to ordinary residential place of noncelibate monks is clarified. Secondly, a framework to analyze spatial structure of present Baha/Bahi is developed through examining the relationship between courtyard's surrounding building and courtyard's accessibility which are extracted from spatial structure of typical Baha/Bahi. Lastly, the framework is applied to 65 numbers of Baha/Bahi in the Patan old residential area. As a result, twelve types of spatial structure are discovered and characteristics of major types are figured out.
