If it's anything like the building work by me, I can assure you the noise goes on even when the postie is not about. One house has been having work done for about 8 years. Work's being done by a dad whenever he can for his son or daughter (I presume). Sensibly, I think planning permission should give a completion date not be open ended. I live quite a few houses away but not far as the crow (or seagull) flies so the sound travels.
At least it's not been as bad as the neighbours from hell
that someone close to me has been suffering!
The neighbours on the otherside have even moved house because of them.