I would probably put a tiny out building with a toilet (or all-in-one) in it. Then you'd have a door as well as the convenience of not having to go home for that while playing. You could also put a little building with stairs down to a basement; in the basement, you could put convenience items to avoid having to go home for everything.
I've often had second properties, but none that I removed the house from. I think I had an island once, and I could just zoom in, click on the ground, and tell them to "go here" (but that was ages ago, so I may not be remembering right). In my current game, I have a teleporter (bought with LTR) on my main property and one on the second property. I can click on the ground at the second property and tell them to teleport over without any cheats involved.
As for deleting fencing quickly (you mentioned there's no quick way), I always just click the fencing like to add but then hold down the Ctrl key as I drag ... it deletes it as quickly as it is installed. You can also use the sledgehammer with click and drag to delete everything in the area you drag over, but that's not a good solution when you have stuff around your fences.
