The urban planning process in Sweden encompasses all design and development of the physical environment in society. It involves a large number of actors and a large amount of data. To be as effective as possible the exchange of data between actors needs to become easier and more effective. This thesis explores how a digital platform for urban planning can be designed to facilitate the exploration of and access to information within urban planning. The method followed an iterative design process based on the UX lifecycle by Hartson and Pyla. Interviews were conducted with potential users to learn about their wants and needs, and research was done on the urban planning process to gather the theory on the subject matter domain. The result of the thesis is a UX prototype of a digital urban planning platform. The prototype was designed in Figma and tested on potential users in a design walkthrough and a usability test together with an interview. The results also show what type of functionality is important for users in this type of platform.