Improve floor plan - how?!

The 269m deviate significantly from the original terrain. So the investor has already adjusted the plot?

Be careful your offer does not include the total costs, there is still a lot more to come, even if you do not scale up. Everything that is built on site, everything that is not included, all ancillary construction costs

Ok, then the child has already fallen into the well. From what one reads here, it is on the one hand difficult and on the other hand expensive to buy out of such contracts. That a regional solid builder is "much, much" more expensive than a prefab house manufacturer would be very, very unusual. Maybe if you want to build a passive house and the solid builder only builds monolithically and therefore charges a very expensive surcharge above his standard. Most experiences here are rather that the regional solid builder is somewhat cheaper. Of course, there can be exceptions, unfortunately it is often because apples are compared with pears. But from our perspective, this cannot be answered anymore now. The question is whether you find a floor plan/solution with your current partner that you like and fits into your budget. If so, a change with buying out will hardly be worthwhile. But if you have doubts, I would already do some research on what that could cost. And I would, as recommended by , look again at the calculation of what is included on the construction side and how much additional costs and markup will still come. There is a lot of reading material on this in other subforums.

I don't know what penalty has to be paid if you back out now.

That might be something to know.

I don't think it's worthwhile.

Since you admit to being a layperson, you might not be able to judge that very well. Maybe you would be positively surprised. It's not only a question of money; it could possibly pay off in terms of living quality.
As already described, time pressure is a very bad factor in construction projects.

By the way, we also obtained other offers and the regional solid builder was much, much more expensive.

You certainly couldn't compare apples to apples there, so I doubt that statement. In general, the trend is rather the other way around.

The 269m deviate significantly from the original terrain. So the investor has already adjusted the site?

Yes, within the scope of the development of the new building area. There are now sewer and supply lines in place and the road is on top.

Watch out your offer doesn’t include the total costs, there’s a lot more that comes on top, even if you don’t build up. Everything that already exists on site, everything that’s not included, all ancillary construction costs

Yes, it’s known!

I do believe that A regional solid builder can be more expensive than A prefabricated house company. That’s why you don’t just ask one.

For me, the penalty clause is 5% of the total amount. That’s not little and difficult to recover, but not impossible either. For me, it wouldn’t be an option anymore, but maybe for the OP? You would now have to calculate very precisely and compare construction performance specifications.

Ok, the child has already fallen into the well there.

Apparently a lot of time has passed that was not used.

So, that a single-family house with 145 sqm is "XS" was actually new to me.

He didn’t write that: he wrote about a city villa. The 9.5 squared is not XS, but you can hardly design anything reasonable on this length.

I read: the house is too small.

No one wrote that: it is too small for a straight staircase or various wishes. Don’t get hung up on unconstructive sentences and terms – rather use the positive tips you received. Because I really can’t see that you are accepting the advice, it is important to reread. Skim read, collect information. What has happened in the meantime through you? Have you at least dealt with the house/floor plan/design/windows etc.? I don’t even want to ask about the technology ops:

I am not one step closer to a solution, but significantly unsettled and demotivated.

Actually, after so much brainstorming one should be totally motivated?! Lots of information that you can now follow up on. With partner and sheet of paper. Or alone. Just do it.

What do I do with that? Unfortunately, we haven’t won the lottery yet.

Also a misconception: you don’t need MORE money if you do it DIFFERENTLY. Quite the opposite, you save on efficiency. With storage it’s not about cellar, but generating closet space, usable area, if necessary attic conversion (i.e. e.g. steeper roof pitch).

Or: maybe the dressing room could be next to the bathroom, to arrange the rooms differently. No idea. Practical hints instead of "everything sucks, you can tell you have no idea".

But with the square measurements that is not purposeful, it just becomes tetris where something always doesn’t fit.

That the floor plan is generally unsuitable or even that of a city villa was never mentioned. This month the building application should be submitted,

There was three quarters of a year which you probably didn’t use? (And no, that is not unfriendly, it is just a statement or a question)

In December 19 there was a consultation and floor plan design from the prefab house company. With the architect we had two appointments this August/September, that’s when the problem with the blinds was noticed.

It’s just annoying. You feel a bit cornered now because of the timeline. Probably this situation blocks you, you don’t know where to start. That’s why my tip: read all this here again factually, write a to-do list, follow the tips, try to draw the added value from it. For definitive suggestions (e.g. from my side) information and data are missing. It’s best to go rectangular and choose a roof pitch that allows for a storage room in the attic. Wider windows etc., that has all already come up. And yes: stairs differently, but you should also think a little yourself. By the way Bien-Zenker also wants to start quickly. It’s their money after all. So they should come up with a better design. After all, you are paying for it. Ps: don’t waste time in this thread. Time stands still with it. Work for yourselves and come back in another new thread.