Király Házak is a virtual house design application that allows you to design a lightweight house type by choosing from the many house parameters specified. The house with the selected characteristics can be projected in life size onto the area around us, the size of the house. During parameterization, the given housing element is modified on the housing preview. In the projection, the house can be rotated, placed down and walked around, and we can even go inside, where we can get a real view from the virtual house. The house includes a base price that changes with the extras you choose. From the application, we can establish direct contact with the representative of the house building company.