Martin – The trailer you saw at Bauhaus, was that a used trailer or something Bauhaus has in stock. The dimensions sound perfect for what I am planning and there has been discussions about whether or not the teardrop is registered as a trailer or a caravan.
I also came across a caravan chassi that would fit your needs, the floor area is 2060 x 3180. The caravan is stripped all the way down to the floor and looks in good condition. The only problem is, it is in Halmstad. The seller wants 900,- for it. I got some images of it and can email them to you if you want.
Regards – Gary