Construction is continuously delayed - call the site manager?

It is important that you call there and write emails daily. Written requests help.

When it became apparent that our construction was delayed (4 weeks), I formally requested the general contractor in writing to submit a construction schedule up to acceptance of the building within 5 working days. Then clearly define the completion date according to the construction contract. In addition, you reserve the right to claim damages for each calendar day of the construction delay; I have set this amount at 85 euros.

It is important that you call there daily and write emails. Written requests help.

Sorry, a word is missing. I meant: NOT constantly call and write emails. Only binding, in writing with a deadline.

It is absolutely clear that you should already take action as soon as the delay becomes apparent! You are the client and as the principal you supervise your construction site.

But not if a general contractor [GU] only has to hand over the finished house. Then it is basically of no concern to them how the exact schedule looks.

From what has been written, my tip:

Talk again with the supervisor/owner and make it clear to him that you are seriously concerned whether the schedule fits. Bring the numerous arguments from here with you, prepare for it, but don't forget: You have no entitlement to anything, it only works if you come to an agreement.

Hm well I do understand the OP, I would also look weird if all the neighbors start after me and finish before me....

so if they are building with the same company that would already be an "injustice". although contracts apply here as well. if the neighbors are progressing faster, you probably negotiated a nonsense contract. basically, only a building inspector remains who complains about the tile misaligned by 2mm and then also tells the construction company how much of the last months really counts as bad weather, so that in summer at best you can squeeze the money out of their pocket. if it's a different company, you could have signed with a more expensive/better company yourself. we also only had a construction time of 4.5 months, but we paid a few euros more for it.

My goodness, there are still 4 months left...

But not if a general contractor is only supposed to hand over the finished house. Then it should basically be irrelevant to the client what the exact schedule looks like.

That is simply not correct. Maybe you mean a property developer. In that case, your statement would be correct. However, the original poster is the client and has concluded a contract for work and services. Of course, they should take action if the delay becomes apparent, i.e., if the contractor does not provide the owed performance in accordance with the contract. This is basically the same as with construction defects.