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Abstract. The objective of this study was to apply parametric modeling for Korean traditional wooden buildings including joints using a script-based modeling engine. Korean traditional wooden buildings have complex structures composed of numerous members called joints and they are difficult to identify from the outside of the building. Therefore, creating the joints for the virtual modeling is essential to fully understand them. This study applied parametric modeling using the relationships and connectivity of each member.First, this study aims to create a single building by generating as many parametric models based on the drawings as possible, and supplementing with scanning models that are too complex to shape parametrically. Subsequently, various joint types were classified based on literature and drawings, and the parameters of each member were designed and systematized to apply to the building model. The methodology of this study can generate low-capacity models because it is based on scripts, unlike Scan-to-BIM and visualize various restoration plans for non-existing architectural heritage and virtual replication of traditional wooden buildings. Moreover, it can be utilized as a procedural modeling tool to create buildings at heritage by area including the surrounding landscape, and gradually applied to curved members using mechanical design.