Windows are smaller than in the building application/work plan.

To what extent the classic? I ask because I would like to avoid the above-mentioned situation.

Because apparently (according to the OP) the house was thoroughly inspected only after acceptance. That is why you bring an expert during the construction phase or at least before acceptance. Of course, you can also go through the house with open eyes, a tape measure, and a camera during the construction phase, which does not only last three days, and engage with the house. Sometimes I have the feeling that the customer deals more with their newly purchased phone or TV than with their house.

Once again, a topic horrifies me. As a lay builder, do I really have to crawl into every construction corner every day and measure everything down to the centimeter? I just don’t understand this entire industry. I consider it normal standard to do your job well, correctly, and without errors (with few exceptions), but in the construction industry, it seems to be the other way around.

Check everything that’s important to you yourself. Many people work on the house, there may be old plans still in circulation, or someone is having a bad day. The crucial thing is not whether mistakes are made, but how they are dealt with. With almost all the companies involved with us, there was zero discussion; they are used to corrections.

Our windows were also different than planned. A quick phone call, and the next day it was corrected. If you don’t look, it stays that way.

The customer is not used to this otherwise. He usually buys finished industrial products. Hardly anyone has experience with craftsmanship outside of a repair at Mister Minit. To everyone reading this: accompany your construction as much as possible yourself. Don't rely on TÜV, DEKRA, or the site manager. Look closely, ask, ask early, is this correct? Is it being done as discussed? etc. And provide the craftsmen on the construction site with coffee, cake, water, non-alcoholic beer, tips.

I sometimes feel that the customer deals more with their new phone or TV to be purchased than with their house.

I can understand that, but I believe that most people, home builders, trust that others do their job as well as they do theirs. Who among us wants to be constantly monitored and treated with distrust in professional life? I know it can’t be different when dealing with construction companies/real estate agents, but I find it one of the most difficult aspects of building a house. Personally, it spoils the joy of the project for me that, against my nature, I have to constantly check whether others are doing a good job or not, point out mistakes, etc. As mentioned, at least one expert takes care of this for us, but it still isn’t nice and dampens my enthusiasm.

Hello,

Do I really have to crawl into every corner of the construction site every day as a layperson builder and measure everything down to the centimeter?

Simple answer: Yes, you do, if you want to have the house in the end that you ordered and paid for, and not one where the craftsmen just happily optimized things because they found it too tedious to cut some stones to meet the specified measurements.

In the shell construction phase, troubleshooting is still comparatively easy; a tape measure is enough as equipment. Much more exciting is troubleshooting in the later trades like electrical and plumbing...

Merry Christmas!
Best regards,
Andreas

... And provide the craftsmen on the construction site with coffee, cake, water, non-alcoholic beer, tips.

I will definitely do that. I am already thinking about how often per week I can show up without the craftsmen feeling suspiciously watched and bossed around. Also, I might set up one of those "single-cup coffee machines" since construction power and water are available anyway.