Took me a while, but I found it.
They stopped using the parking garage a decade ago and put a fence around the house. I guess they would park under the trees and walk up to the house. It's off in a field. No neighbors.
Here it is in 2009
The following year, the owners built a second house right next to the hilltop house, and over a couple of years, they put in a new driveway, a bunch of landscaping, and pushed the fence out around both buildings.
This is 2013
I guess the Hilltop house wasn't suited so much for living in.