You might want to look at these videos with regards to using archviz in Unreal Engine with a photogrammetry visual set. BIM output can be used if you have more experience with architectural CAD toolsets. The plugins are available now except the BIM which is slated to be open by the end of August/Summer.
[1] https://www.youtube.com/watch?v=oiiKeAlm6Ow This Put Me on Stage at Unreal Fest Chicago
[2] https://www.youtube.com/watch?v=5ehoHM-uzRQ From Scan to Stream: Open Pipelines for Large-Scale 3D in Unreal Engine