Building Categorization Strategy Guidance in the Historic Area Renovation Process

Under the fast development of city economy and environment, building heritage helps to preserve the cultural identity and history of a place and its people, providing a sense of connection to the past. Historic area renovation is a multifaceted endeavor, combining aspects of culture, architecture, economics, and community engagement. After the outbreak of the COVID-19 epidemic in 2020, three new challenges have been faced by historic area regeneration. First, if the renovation has not been implemented yet, how should building attribute types be classified at the very beginning? Second, if the renovation has stopped due to the epidemic, how should the process be restarted and how should accurate suggestions be given based on previous implementation? Third, when the historic area contains a variety of different styles of buildings, how should the stage of conservation renovation be judged and how should overall guidelines on area conservation be given? A dynamic methodological approach based on the management of three-dimensional information has been proposed by our research team to help monitor changes in building attributes during implementation. A case study was analyzed using the proposed model but paying attention to new aspects of model application. By comparing the buildings represented in three historic areas of Taizhou Old City, buildings before renovation often face problems more on a material level. During the process of renovation, it is necessary to pay more attention to the spiritual level of building problems. Renovation guided by a different subject would lead to different problems in the update process. It is also important to categorize guides based on the proportion of different building types and the prominent conflicts in the area.