In the picture, the curvy driveway is to his house. The smaller building with the red tile roof is the train shop. The main layout is to the right of that. There are 3 more areas sectioned off above.
The one next to the house is for back yard, the square one with the 45 degree "bite" out of it, and the triangular part to the right were being expanded into when we were there at the NGRC this year.
It's bigger than you think, because his house is huge. The smaller building is as large as most people's houses.
He has concrete base, then rubber roadbed on top and everything is screwed down. He uses a ton of "expansion tracks", the kind with the sliding rails. R.J. and Ted Doskaris and I talked to him for quite a bit.
All track is aligned with a laser, and it looks it, the trackwork is perfect, nothing less, you could not see a flaw anywhere, and R.J. was on the lookout!
He uses a combination of track power and AirWire on battery. All switches are air powered.
Regards, Greg