Operations are one of the main activities in the company; almost all companies have a General Affairs (GA) section that takes care of all household and operational matters. The bigger the company, the more complex the problems faced. To overcome these problems, the role of technology is needed. Previously, the general support process at the company was still done manually. At the same time, the number of employees had reached 700 people, so it was tough to support processes such as room lending, asset lending, and vehicle tracking if they were still using conventional methods. This research will build a web-based general affairs information system using the prototyping method. Prototyping is a method that requires the developer's interaction with the client so that it can overcome the incompatibility between the system developer and the client. Tests are carried out using black-box testing techniques focusing on checking system functionality. The results of tests conducted by 26 respondents show that the system built is 100% feasible and meets expectations.