Can I build as I please on my own land?

[hnash53]

The subject question applies to property outside of cities, town, municipalities.  In other words, rural, vacant, land.  In a desire to live much more simply, not tied to water and power grids, just how much freedom to build as I desire do I have?  Specifically, I am talking about my own type of foundation (insulating pier-post foundation), grey water treatment, outhouse (for black water) or other black water treatment short of septic system.

I imagine that I'll get answers saying that it varies from place to place and that I need to check with county officials and the like.

Finally, those of you who already live out like this, where are you?  

Does anyone know of places where one can build as such?

Thanks for your replies.

Hal

[glenn kangiser]

It's easiest to do where there are no regulations - hard to find.  Some of us just try to stay under the radar. :-/