Resumen
Traditional Malay house has characteristics of passive thermal design which practices climatic design strategies. Currently, Urban Heat Island (UHI) cause energy utilization increasing for cooling purpose in the residential sector. Consequently, modern building construction has a poor passive thermal design. The aim to assess the thermal performance of Negeri Sembilan traditional house towards sustainable practice. The findings show house openings allow cross-ventilation, while house orientation towards climate factors contributes to the comfortable interior. This study highlights ideas and knowledge in improving the construction technology for modern architecture to produce an effective indoor thermal performance in a tropical environment.