That I fear it will be difficult in administrative practice to credibly demonstrate occasional use of a house that is not located in an explicit holiday residential area.
might possibly depend on the size and equipment?
with the barn I looked at over the weekend, however, the statics worry me more:
offline I noticed cracks in the front wall, the back wall and one of the side walls, each extending over one or two floors up to the roof structure in cheap masonry (unplastered concrete blocks)
--> could be a bit more expensive if I have to first set (have set) ring beams BEFORE a change of use?