BIOCLIMATIC SANITATION OF THE PROTECTED RESIDENTIAL AREAS – CASE STUDY ON POSSIBLE RENEWAL OF BAČ FORTRESS SUBURBIUM DRAGANA PETROVIĆ*, MILA PUCAR**, JELICA JOVANOVIĆ* Translated by Marina Kleyweg and Kolin Kleyweg, Kleyweg Consulting * NGO The Group of Architects, ** Institute of Architecture and Urban & Spatial Planning of Serbia (IAUS) E-mail: draganairish@gmail.com milap@iaus.ac.rs jelilica@gmail.com Abstract. Results presented in this paper refer to possibility of bioclimatic and energy sanitation of law protected residential areas. Research involved investigation of traditional build principles in Vojvodina, as well as identifying the best methodology in terms of allotment reorganization, installation of sanitation facilities in residential and auxiliary facilities, with special attention to energy efficiency and usage of renewable energy. The inhabitants of the Suburbium are facing difficulties and struggling to meet the demands of the heritage protection services while trying to improve the quality of life in houses that are in bad condition, compromised by moisture, improper repairs and years of neglecting caused by the poverty of their owners. Since the services in charge are under-staffed, the idea of public-private partnership emerged, in order to conduct this research study and come up with the best possible solutions to the burning problems of the community. The ideas students came up with at the Summer school of architecture were extended and shaped in order to meet the documentation standards for next edition of Suburbium master plan. Key words: bioclimatic sanitation, energy efficiency, protected ambient areas, Vojvodina, Bač 1. Introduction Bač Fortress suburbium consists of a street inside of medieval town of Bač, surrounded by dried moat. This is the place of medieval town’s craftsman district. The houses in the street were built at the beginning of 20 th century, just after the big fire had destroyed all but three houses in the street, the ones near the water and the entrance gate of the suburbium. The houses are protected by law of the Republic of Serbia as cultural heritage, preserving the picturesque ambience values of the Bač Fortress. The suburbium has always been populated, but the residents of this street have many problems maintaining the buildings, especially since they are expected to cover for the major part of renovation expenses that are significantly higher in this case and building