This study aims to measure the level of infrastructure service performance of Mariso low-cost apartment (Rusunawa), which is the key to the comfort of occupancy that ensure the sustainability of daily activities both physical and non-physical. Targets to achieve in this research are to formulate the infrastructure service performance according to the standard service of building infrastructure and facilities and as mandated in the standard of planning, building and evaluation of building post-occupancy. This method is used to determine the extent to which the perception of occupants responding to the results of a built environment after more than 10 (ten) years occupied. The applied research method was descriptive research method through the recording and infrastructure service performance analysis by linking between the comfort factor with the standard planning of Mariso low-cost apartment (Rusunawa). The results of the research are the recommendations on the suitability of the service standards/performance infrastructure of the building with the existing conditions of the building with attention to the variable availability of infrastructure that become the focus of research.