The current study attempted to investigate the economics evaluation of application of building management system (BMS) and the problems against applying it. For this purpose, some building according to area and type of application selected as sample. And again to find the major problems against its application in view of experts and contractors a questionnaire to collect concern data provided. The data collected for the year 2010-11. The results showed, the application of BMS in case of existence of subside for the energy resources such as electricity, water and gas, in economic issue is not suggested but in case of non-subsidy it is. In addition, the results showed the major problems against BMS application in Iran are economic, cultural issues, lack of information and accessibility.
