As for concrete and pylons depends on code.
I can do this with a gravel pad and not be called permanent structure so no tax on it and no permit.
If I do concrete I need a permit.
This is different from a concrete pad. It can be either a concrete block or you can cast concrete cylinders.


I have been lucky so far with poison ivy with no incidents though my wife has had it a few times. I almost wonder if there's such a thing as immunity.
Yes. Some people do not have a reaction to it.