Well, I'm finished my part. They are going to paint the wood green.
In this is the horse: Cochiese (I think that is how they spell it)
Building at the widest (roof) is 14' 5". Front is 7' and the back 6' high. 10' 4" deep (just the way things worked out).
All told, about $900.00. (not including my "free" work)
They bought an other lean-to from a farm place for the same price. All wood (which will last no-where as long) and no pen, for another corral area.