Not having the builders radios on really loud from morning -night. Or eff and jeff in the garden all day long. Agree on saturdays and bank hols as well
This. We've been on both ends of this - have done our own extension and now next door but one are having a big renovation. Their builders, complete with really loud radio, start at 7am. Its woken us up every week day for about 2 months. We're just putting up with it because I know our builders made noise (albeit not that early and it was well before lockdown) but its frustrating. So is the language on occasion.
I also think you need to tell the builders to be considerate in terms of parking, and if they're having materials delivered, then need to tell delivery drivers too (i.e. don't block the road or pavement). Also, some builders seem to think its a free for all - taking out joint fence panels or going onto neighbours land as its easier access - just get all that straight before you start.
If you get on with your neighbours, have a conversation with them. I know its really difficult to accommodate particular schedules or limit noise at particular times, but if you can discuss it with them, if they have any times of the day when they might be on important calls / baby might be napping etc etc, you might be able to at least appear to be taking that into consideration.
And then remember what you've put them through when they're making noise. Our neighbour has had a couple of really late parties (think 4am with music blaring). Don't complain, least we can put up with when they've put up with months of building works.
And wine / beer / flowers / chocolates always help!