I'll post the rather indirect method I'm currently using as an answer tomorrow. If you want to do this correctly use SketchUp Pro and add the location imagery with the Add Location feature. FWIW, Google’s terms of use for Google Earth and Google Maps don’t allow for usage of their imagery. I would prefer an import converter that provides MMA with this import capability, but other routes are welcome too. Share the SketchUp file so we can see what you are working with. My question is: How to convert SKP files in a clean polygon based structure in Mathematica? The resulting XML tree is rather complex as is the definition of Collada and getting at the geometry of the object is far from trivial (I managed to coerce the coordinate set of a model from it). DAE files are zipped Collada files and these can be read as XML by MMA's Import. Though MMA can read KMZ/KML files it doesn't read those containing 3D objects. The free version of Sketchup doesn't export to any other formats than the KMZ (Google Earth) and DAE (Collada) formats.

The capability to import Sketchup's SKP files in Mathematica would be very nice, but alas, it doesn't do that yet. Many of the 3D buildings in Google Earth are made with Sketchup. A window will appear with satellite imagery.

SketchUp 2016 Make is recommended (It is completely free, unless you. Moreover Google has an enormous warehouse of 3D objects so that you actually don't have to do much modeling yourself if you aren't particularly gifted in this area. It is the most commonly used tool for Google Earth Modeling. Google's Sketchup is a nice, simple 3D-object modeler.

Sketchup google earth