Even doing of reno work also can't be doing til wee hours of the morning right? It'll cause disturbance to the rest of the neighbours, they have a time stipulated. Last time the school below my blk also undergoing reno, super noisy and dusty, but at least by about 10pm they'll stop but even so, that's very very very infrequent , sat would continue but usually til 5pm. So even if they have the license for reno, there's a time range as well. Don't worry just complain to town council.