The joint force of bottom-up and top-down in the Preservation and Renewal of Rural Architectural Heritage, taking Piedmont, Italy as the case study.

 The purpose of this research is to clarify the path of preservation and renewal of the built heritage in the Italian countryside, and summarize it as a “joint force” characterized by the combination of bottom-up and topdown approaches. The first part analyzes the formation of the joint force model and its components. The second part analyzes. The evolution of the related policies. The third part takes Piedmont region as an example to analyze the methods of preservation and renewing at the local level. A detailed case of the residential renewal is provided. The fourth part is the discussion and summary.