Received GU offer - Assessment of fair offer?

If you can just downsize the house like that, it was planned too big before. But that doesn't affect the price per sqm or cbm.

Well, the single-family house is planned with a width of 10m, and I think that is at least a minimum size for a single-family house. You can always just downsize everything.. And if you are not allowed to build a basement, that hurts even more..

You can always just reduce everything.

No, whatever can be reduced just like that must have been too big before - otherwise the reduction would have hurt.

No, something that can simply be reduced must have been too big before - otherwise the reduction would have hurt.

You can also build a single-family house with a width of 1 m, sure.. 2 m could also be too big..

Better be glad that you are spared this oversize. ;)

...
In a 210 sqm / 650k construction, general contractor construction service descriptions have no place anymore; the construction service description should come from the planning, tendering, and supervising architect – even with zero-problem plots.

Why?
What makes the general contractor worse?

Why?
What makes the general contractor worse?

You wrote about a 210 sqm / 650k construction project. This is not a hobby homepage for which you Google "disclaimer generator free." Instead, I consider it appropriate to hire an independent architect here. Then you don't compare general contractors based on their ready-made scope of services from a template, but you develop your scope of services together with your architect. You do the tendering actively.