Sustainable urban renewal has received tremendous academic attention and has been put into wide practice around the world. In order to avoid unsustainable renewal projects, the evaluation of the sustainability of urban renewal has become a critical procedure. However, there is an insufficient number of relevant studies on ex-ante evaluation compared to a large amount of literature focusing on ex-post evaluation. Most literature does not fully consider the interdependency between the dimensions/criteria of evaluation. How to utilize this to evaluate real cases is shortage. Hence, this study presents an ex-ante decision-making model for evaluating the sustainability of urban renewal projects based on hybrid multiple-attribute decision-making (MADM) from a government perspective, and includes three classical dimensions: economic (D1), social and cultural (D2), and environment (D3), as well as 13 relevant criteria. A case in Taiwan is used to evaluate the potential performance of sustainability and explore improvement strategies. Empirical results from the Decision Making Trial and Evaluation Laboratory (DEMATEL) reveal that the social and cultural (D2) dimension impact the environment (D3) and economic (D1) dimensions, with the economic (D1) dimension being the most impacted by other dimensions. Enhancing transportation (C5), strengthening the accessibility of various public facilities (C4), preserving local culture (C9), increasing greening and open space (C10), and improving land-use efficiency (C3) are the criteria in the “cause” position, among which strengthening the accessibility of various public facilities (C4) and improving land-use efficiency (C3) are considered to be the core of urban renewal project sustainability based on DEMATEL and the DEMATEL-based analytic network process (DANP). The modified VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) method indicated that the social and cultural (D2) and the environment (D3) dimensions have poor performance. Thereafter relevant improvement strategies and paths are suggested based on an influence network relation map (INRM). The results imply that recent urban renewal policy reform in Taiwan represents a step toward sustainable development. •Exploring the interdependency between the dimension/criteria for ex-ante sustainable evaluation of urban renewal projects.•A new model of hybrid multiple-attribute decision-making is utilized.•A case in Taiwan is used to evaluate the potential of sustainability and explore improvement strategies.•Results indicate that social and cultural (D2) dimension impact the environment (D3) and economic (D1) dimensions.