Mill Station under construction 
Game project: http://worldofclouds.com/escapefrommillstation.html
Modeling and UV mapping in Blender.
All parts (objects) with pivot point set at 0,0,0 In Blender.
All parts exported as one fbx static mesh.
Imported into Unreal meshes (objects) remain separate.
Materials for each mesh built inside Unreal with tiling.