Linguistically and genetically, the Austronesians spread throughout the land and islands of Southeast Asia to Madagascar, New Zealand, Eastern Island, and Hawaii. They have closeness in language and even culture. Western Malayo-Polynesian is one of the sub-groups of Austronesian language families located in Sumatra, Kalimantan, Java, Bali, Lombok, Sumbawa, and Sulawesi. Vernacular and traditional houses are the result of a local civilization and culture in this region. Indeed, architecture is a language that is implemented in form design. Because of the closeness of language in one family group, the proximity of architectural characteristics tends to be similar. What are the architectural characteristics of the homes of Western Malayo-Polynesian speakers? This study uses a qualitative approach, which aims to read the architectural characteristics of vernacular and traditional houses in the region. The data are collected mostly from secondary data and the rest are primary data in the field, which are then analyzed by discussing aspects of space and its form aspects. The results of this study indicate the similarity of principles in space aspects which tend to be consistent and the similarity of principles in aspects of the form that tend to be similar but with variations.
