A general opinion runs that a 3D object is just developer’s graphics and fantasy. There is some truth, 3D visualization of the real estate initially implies the use of graphics but that is not so simple.
Before creating a prototype of an interior or exterior, all factors of an object are taken into account: outlays, drawings, area plans, geodetic researches, etc.
Even if the above mentioned points are away, the fantasy of a 3D developer will not be enough. When creating a full-fledged, realistic object, you need to make efforts of several people, at least an architect and a 3D developer.