Outside of any of the major cities you could build whatever you wanted to. Houston in general has no zoning laws, but hoa's you would have to look out for.
You can go 10-15mins from a major highway in Houston and be backwoods country. Just got to drive around to find a spot you really like. DFW is a nice area too, amazingly it seemed more city life to me than the outskirts of Houston. Had to drive a ways to get good land away from it all.
Anything between Austin, Houston, DFW and you would be good I think. Don't go way out west, nothing there.
Too far east and you get into hillbilly territory too. I think the Cajun's are slowly invading from Lousiana....