This paper analyses land security management principles and practice in Slovenia (Si) by presenting a real property transaction example that is formally described and modeled as a use case. First the legislation settings and the description of the dual real property registration system in Slovenia are shortly outlined. Then use case descriptions and UML diagramming examples of a simplified real property transaction process are developed. The use case described is the sale of a whole urban built-up property with a detached house. Using the general-purpose object oriented modeling language (UML) and following the adapted system engineering methodology this transaction case is represented on several diagrams: package, class, use case, activity and sequence (interaction). The article concludes with the analysis of the process, discussion of security provision for this real property transaction case, time span of similar transactions and the reasons for possible delays. Some considerations for improvements and reduction of the time needed can also be derived.