questionnaire and interview schedules. The collected data was analyzed using Microsoft excel and presented in form of means, frequency tables. This study found that the planned maintenance strategy and preventive maintenance strategy have big influence in cost minimization in building maintenance. However, the corrective and unplanned maintenance strategies increase the cost of maintenance of commercial buildings. The research concludes that there the Property owners and managers should follow maintenance strategies, which is good in decrease maintenance cost .The researcher recommends that the Kigali city does not have a database of commercial properties; they should work on construction of database, which may lead to an easy access to information to help the researchers and other information about commercial properties in Kigali City.
Key words: Maintenance cost, maintenance strategies, property management, Commercial building property, maintenance.