A Review of 10 years Research on Barriers in the Whole Process of Building Retrofit: Stakeholders’ Perception

Building retrofit is considered to be one of the most effective ways to improve the performance of existing buildings. Many countries have realized the importance of building retrofit and adopted various measures to promote it. However, the rate of building retrofit of existing buildings remains low in most countries. Thus, it is significant to explore the barriers of the building retrofit to promote the development of sustainable building. Some studies have identified the barriers from technical and economic perspectives. Nevertheless, the importance of stakeholders in building retrofit has been ignored. Therefore, this study comprehensively summarized the stakeholders in the whole process of building retrofit and identified the barriers from the perspective of stakeholders. By using the method of systematic literature review, 54 articles published between 2010 and 2020 were collected. The process of building retrofit was divided into four key phases: project setup and pre-retrofit survey, identification of retrofit options, site implementation, and validation and verification. Finally,13 stakeholders and 47 obstacles were identified from the four key phases. This study also divided barriers into five categories and summarized the barriers corresponding to the stakeholders at each phase. The result of this study can serve as a basis for future research on the relationship between stakeholders and barriers in building retrofit, and provide a new perspective for policymakers to propose strategies to address these barriers.