I happened upon this one day.  There is no permit.  The owner was ridiculously indignant.  I mean, you know, way more than he had a right to be.  He had a bunch of children to admire and love him .  The wall that this guy figured on building was way less than the wall he needed.  He was able to afford a chain link fence. Then I was transferred  and I don't know the outcome.  It might be anything by now....make a great firing range.