Life Cycle Cost Identification on Building Maintenance of Badan Pengelola Keuangan Daerah Pematangsiantar Syahrizal 1 , Fatimah Almadinah 2 , Rahmi Karolina 1 , M. Agung P Handana 1 {*imadiahmad1977@gmail.com} 1 Lecturer of Department of Civil Engineering, Universitas Sumatera Utara, Medan, Indonesia 2 Student of Civil Engineering of Universitas Sumatera Utara, Medan, Indonesia Abstract. Badan Pengelola Keuangan Daerah Pematangsiantar building has been established since 1981 and has been operating for more than 30 years. In order for the function of the building not to decrease during the life of the plan, routine maintenance is needed. However, maintenance carried out on the building so far has only been carried out in the events of damage or just as needed. Therefore, it is necessary to conduct a Life Cycle Cost study at Badan Pengelola Keuangan Daerah Pematangsiantar building to analyze the economic value of the building by considering the operating costs throughout the life of the plan. The purpose of this research is to make a long-term plan of Life Cycle Cost and to identify maintenance components of the building by making a financial schedule of maintenance costs over the life of the plan and to know the biggest maintenance costs. From the results of the research carried out, the total maintenance costs for the next 15 years amounted to Rp 2,052,491,356 which consisted of mechanical components maintenance amounted to Rp 386,534,267, electrical components amounted to Rp 1,078,841,811 and external spatial components amounted to Rp. 578,115,279. As well as the biggest maintenance costs on the maintenance of all components reviewed is the maintenance of electricity network with an average weight for the next 15 years of 29.86%. Keywords: Building maintenance, financial schedule, life cycle cost, maintenance component 1 Introduction Pematangsiantar City is the second largest city in North Sumatra Province. Pematangsiantar City is also has various characteristics of economic activities and consumption as a potential source of regional income. Therefore, the government of Pematangsiantar City built the Badan Pengelola Keuangan Daerah building in Pematangsiantar as the organizer of government affairs in the area of regional revenue in 1981 and has been operating for more than 30 years. In order for the function of a building is not reduced throughout the life of the plan, there is a need for routine maintenance of buildings. However, maintenance of buildings so far has only been carried out if there is a damage that occurred or according to the required needs. With routine maintenance, the frequency of replacements and repairs will be increasingly frequent over the life of the building plan, resulting in high maintenance costs, then the overall costs of the project cycle will also be high [1]. ACEIVE 2018, November 03-05, Medan, Indonesia Copyright © 2019 EAI DOI 10.4108/eai.3-11-2018.2285836