Nextdoor's builders totaled my bike - what should I do?

Thanks for all the comments. Very helpful to hear everyone's views. I think there is something going on with the owner's finances which isn't helping. He put the half built house up for auction last week "sold as seen", though I highly doubt he will be able to sell it. Then the scaffolders came and smashed some of the roof and brick work up. Assume they hadn't been paid. I think he's gone bust. No idea about the insurance. When the work started he was clear that he is fully insured. Maybe he doesn't want to pay the excess.

Building a house for profit is a risk he took, so I probably need to stop feeling too sorry for him. Though won't go as far as taking a shit on his lawn lol.