This project was undertaken as a capstone project for the Department of Computer Science at Ball State University. The course sequence requires students to work with a professional client-partner and learn techniques related to the software engineering process. The client-partner for this software project was Century 21 of Muncie. The assignment was to design, create, test, and deploy software that would calculate a commission rate for a potential property listing. The commission rate should be an estimate that covers the known costs of operating the business and allows the realty group to offer competitive rates. The software is also intended to be used by an experienced agent whose knowledge can be used with the software to make sound business decisions.This document includes four manuals that chronicle different aspects of the software systems, including the different phases of development mentioned above. The four manuals are the user manual, the programming manual, the operation manual, and the systems manual.