The article deals with the topic of Historic Building Information Modeling (H-BIM) applied to the historical architecture of an urban park within the Itabashi district of Tokyo. The document will address a methodological discussion concerning the construction of parametric models of historic buildings in the park starting from laser scanner. The research is prompted by the modern need to have databases full of exhaustive information, through which we can preserve the historical heritage present in the Japanese reality, monitoring the conditions and planning the future. This work is carried out in collaboration with the Nihon University of Tokyo, the Alma Mater Studiorum University of Bologna, the Itabashi municipality and the Topcon industry. The work is preparatory for the development of the redevelopment project of the park, through the reuse of its buildings, the arrangement of the green and urban furniture pursuing the objectives of maintaining the historical memory of the place and its harmonization in the urban context, creating a further pole of attraction for citizens and visitors
