That's good news if it's the U.S. Company, they are really rated in the U.S...
I advised the planning dept of the fact these would move vertically off the plane but it was the fact it was being fitted to the detached garage that is not viewed from the road that was the clincher, I think had the garage been attached to the house and visible from the road, then they might have given me a hard time or refused... I have always found with planning depts if you are straight up about what you want to do, they will assist you a great deal.... when I first built the detached garage, technically it needed no planning as 'permitted' development, not being over 4.2mtres etc, but I still checked to make sure - they came round, measured up the land and size of current house and said, 'Yes, no problem as with the additional building it will still only be 28% of the land space which is why I am adding the side extension as that will take it up to 35%, well within the 50% limit.