As always, my attempt to paraphrase has led to confusion rather than clarity. €300 worth of stuff wasn't stolen. I agree that stuff was probably thrown out but some clothes were destroyed with gloss paint and about €100 worth of groceries rendered inedible due to dust/paint. It was very messy and contract cleaners had to be engaged to break the back of the cleaning (dust in computer equipemtn, layered on bookshelves, all over bedclothes, in wardrobes etc....). A few dust sheets would have gone a long way...... it's amazing how quickly the numbers add up to €300.
Also, he didn't really do a good job - there are a couple of snags that need to be addressed - some of them quite significant. Anyway, the original question remains - has anyone experienced something similar to this in the past and how did the builder respond? Am I wasting my time even talking to them in your opinon?