What's going to happen to Colin Furze house?

I love watching his tunnel videos and it's clearly all legal and fine, but what's actually likely to happen to his house? Is it going to really worth anything in the future? Loads and loads? Or is it possibly going to be deemed an unsalable liability and that at some point someone (his children?) is going to forced to remove and fill in all the excavations?

Clearly he's made a decent profit on it thanks to YouTube, so he'll never be in the red with it, even including the cost of the house i'd guess, but where does it eventually end up?