@fjsgruppe said:

I’d like to overlay the cadastral boundaries as a layer/tag on the 3D image from „Add Location“. That would save me a lot of time.

Would this be difficult to implement this as a SketchUp feature or an extension?
Or is it already possible and I just haven’t found it yet?

What is the source for the cadastral boundaries? Unless it's a unified global source I wouldn't expect that to be added to the Add Location feature in SketchUp.

I managed to add a 3D terrain model to an area using “Add Location.” It’s very quick and easy to do.

The terrain data comes from „OpenStreetMap“, right?
OpenStreetMap also includes “OpenKataster” here in Germany, right?

I’d like to overlay the cadastral boundaries as a layer/tag on the 3D image from „Add Location“. That would save me a lot of time.

Would this be difficult to implement this as a SketchUp feature or an extension?
Or is it already possible and I just haven’t found it yet?

Kind regards,
fjs