Hello, is it possible to import 3D buildings from Google Earth to Sketchup? If so how do I do this? Thank you for your help.
In a word, no.
The 3D buildings in Google Earth are not SketchUp models.
You could have a look in the 3D Warehouse and see, if by chance, someone has uploaded a SketchUp model of the building you’re interested in.
The Google Earth desktop app can still display a kmz file exported from SketchUp, but the ability to upload or download 3D models at the GE server was discontinued by Google several years ago when they sold SketchUp to Trimble.