Error in house construction - How did you deal with it?

You surely know a plan for your house, right? Was the entrance roof ordered with concrete/20 cm or not? Was the parapet height specified in your plans, as well as the door height? Or did you buy "a piece of house with balcony and interior doors" and your contractor has free choice about what he puts there?

Even as a layperson, you can roughly check with a measuring tape whether, for example, the heights fit.

Wow, what are they doing there?

Even if the contractor now bears the additional costs for the doors, what if you have to/want to replace them in special sizes in 20/30 years? I would have that additionally compensated simply because it will cost more money in the future.

And otherwise, I also think it’s about the total amount. I would be really pissed if so many things look different than I wanted. For some things, I wouldn’t care – mistakes happen. But for you, these are already visual redesigns...

You surely know a plan for your house, right? Was the entrance roof commissioned with concrete/20 cm or not? Was the parapet height given in your plans, as well as the door height? Or did you buy "a piece of house with balcony and interior doors" and your contractor has free choice of what he puts there?

Even as a layman, you can roughly check with a meter stick whether, for example, heights fit.

I have a different opinion. It is not the client's fault to not know or measure the parapet height of the railing. Mistakes can easily go unnoticed. We are currently on the construction site almost every day, and I am sure that I am perfectly capable of overlooking something, even though I know the plan extraordinarily well.
With changes, things are sometimes discussed incompletely. The layman does not know which questions he should have asked. That way, a thicker roof can quickly come about.

So, from my point of view, it is not the client's fault.

We have by far not measured everything and yes, things can be overlooked. But some parts read as if there is no real planning.

Even if the contractor now covers the additional costs for the doors, what if you have to/want to replace them in a special size in 20/30 years? I would ask for additional compensation simply because it will cost more money in the future.

From my point of view, that would be petty, although the argument is correct. I once traveled to France with a fellow passenger. We agreed to split the costs. When we returned, he calculated the extra consumption caused by him and his luggage on the trip and wanted to reimburse me only for that additional consumption, since I probably would have driven alone. Argumentatively, that has its logic, but it is very petty.

And otherwise the total amount matters too, I think. I would be really pissed off if so many things look different than how I wanted them.

I feel the same.

Yes, only case-by-case decisions help. I believe many defects will not be noticed immediately, many probably live with serious flaws and after many years they can be expensive to renovate.

We also have many defects in the house, discovered many things during construction and still stayed put. What else can you do? Taking off a bit of money unfortunately doesn’t really help.

If you don’t have good craftsmen, you can dig yourself in. Reworking often makes it worse.

For example, all the interior plaster in our house is wavy and when you turn on the light it gives you the creeps. But curtains and furniture hide a lot. Only "gallows" humor helps.

Best regards