Summary: Over the past decades, building manufacturing has caused serious environmental impacts, despite its role in the national economic growth. Thus, in developing strategic plans for economic growth, many governments consider the application of green manufacturing building and technologies as key factors towards a greener economy and lower carbon emission. However, so far, there have been limited efforts relating to the application of eco-efficiency ideas in building manufacturing. In fact, environmental sustainability in building project and delivery is still at a nascent stage. Thus, this study aims to identify and rank the sustainability indicators for assessing green building manufacturing in Malaysia by considering Green Building Index (GBI), which is the most applied sustainability rating tool in the country. Data is collected from a panel of experts and fuzzy Decision-Making Trial and Evaluation Laboratory (DEMATEL) is performed to reveal the importance level and relationships among sustainability indicators in green building manufacturing. Results show that “Energy Efficiency” and “Indoor Environmental Quality” are the most important, while “Water Efficiency” and “Innovation” are the least important criteria in assessing green building manufacturing in Malaysia. This study can serve as a guideline to select and promote the optimum practices in green building manufacturing.