Hello, I work in 3d max and Unreal Engine 4 in making VR so if you have the building in AutoCAD this is perfect because I can import it with ease in 3d max, make all the needed adjustments, export it for UE4 and then prepare all the needed data for VR, we will have to decide on what device you intend to show the final result for better output. Please contact me over chat for more details, regards, Bogdan