Joglo and Limasan are traditional Javanese architectural structures and Java’s favourite vernacular dwellings. These houses have spread to other areas in Central Java and the Indonesian province of Yogyakarta. Given local characteristics, the architecture of these structures is not simply identical in some respects, but also based on people and the natural environment. This study examines how environmental synchronization related to vernacular sustainability can be achieved on the basis of the regional diversity between Joglo and Limasan in Central Java for a contemporary custom. Architectural features of shape, size, orientation, materials and sample openings from 10 areas in rural Central Java are compared to discover their distinctive sustainability methods. The objective of this study is to prove the ability of Javanese people to synchronize their homes in different ways. The reasons for this synchronization are explored from both a natural and a social perspective in order to better understand the disparity of vernacular architecture in relation to the environment. The results indicate that, in the same category, the houses in each area show their indigenous architecture as a result of synchronization with the local nature and social situation of the population. Traditional Javanese architecture is classified according to roof shapes known as Joglo, Limasan, Kampung, Panggang-pe and Tajug (Dakung, 1981, Ismunandar, 1993). Joglo and Limasan houses are the main preferences and are still used to some extent in urban and rural areas in Central Java, Yogyakarta, East Java provinces. Although these two types of architecture come from the same root (Idham and Aksugur, 2006), their architectural association differs significantly. The preferred preference is Joglo, followed by Limasan. Javanese generally perceive Joglo as a masterpiece of traditional Javanese architecture and consider it sacred in Java. For those who prefer a very spacious place, Limasan is preferable because a house extension with Limasan is relatively accessible compared to other forms. Other types are less desirable because Kampung’s traditional form of construction is recognized as belonging to the lowest social class in Java. Kampung is also commonly used for contemporary style houses with no or fewer local values. Panggang-pe is mainly used for non-permanent buildings, while Tajug is mainly used for religious buildings. Therefore, this study focuses on the two most common forms of Javanese houses, Joglo and Limasan
*Didact. Specific to a country, to its people. Native, domestic, indigenous synonymous. Vernacular customs. With agriculture, weaving and pottery, woodworking became widespread (…). At this stage belong most of the “vernacular” constructions raised in the world (La Gde Encyclop., Paris, Larousse, t. 16, 1973, p. 3255, col. 1).