I guess it is a while since his Lordship tried to get rest in a HK apartment with renos going on nearby:
"On-board sleep cannot be guaranteed due to factors outside the pilot’s control such as light, noise and disruptive motion (e.g. turbulence)."
I would take my chances with a J Class snorer anytime rather than a honky jack hammer. By deduction, next time I cannot rest due to renos, crying kids, barking dogs or aircraft on a go around, I will not be sufficiently rested and must call in unfit.