PT. Sumitomo is a company operating in the rental of heavy equipment for construction industry. Some devices which are rented are excavator, tractors, bulldozer, shovel dozer, motor grader, vibration roller, mesh grid roller, dump truck, and a ripper. In his activities, PT. Sumitomo also serves the complaint for damages, repairs, and procurement of heavy equipments. Ideally, the tenancy agreement drawn up in the employment contract should have complete records on employment contracts such as company profiles of tenants, the type of heavy equipment rented, maintenance time, the location of heavy equipment, and other records as a tract record of tenancy transactions. Right now, the common problems which is encountered is the file of record contract of employment and other support only the hard copy and disorganized, this condition make inefficient for data finding and data processing if the data will be used as the reports reference materials of contract. Moreover, there is no record of complaints of vendor partners, reports of the newest condition of the heavy equipment, the cause of damage, repair locations, technicians, and the spare parts replaced until now. Based on those, the company needs a computerized system for data management which is related in the activities of company. The system built as web-based system to facilitate the related parties to obtain the data and information needed at that moment.