Mobile information service can provide positioning, query, text, drawings, video and other browser interfaces. It is an indispensable object to most people. Advanced technologies have changed the manner and speed of information delivery. People need to work for a long time for buying a house. Choosing a suitable house is a very important task for homebuyers. This study discusses related important information during housing transactions which are foremost concerns of home buyers. The system analysis is performed to fulfill demands of home-buyers in house transactions. House selling system is developed by using Unity in this study. The basic house data, aerial 3D perspective, site information, plan drawings, hall schematics and landscape are compiled in this system. Real estate agents can communicate with customers by using this system on smart phones, tablet PC and other advanced communication platforms. Home buyers can examine interesting objects at home to handle future affairs such as interior decoration and furnishings. Careful preparations and discussions can prevent human mistakes and render a decent house buying experience through the help of this system. Through the development of this project, real estate agents can prevent lengthy explanation procedure; speed up project sales pace and save considerable manpower expenses.