When it comes to the question of whether I can afford the project, I have to look at the total costs and not just the house alone. And that includes the land and the ancillary construction costs. This was not about a price comparison anyway.
That’s also what always bothered me about the general contractor (GU). They only calculate the house and usually in a way that you can’t really compare prices. No GU has shown the total costs with all the ancillary construction costs, because otherwise people would probably run away in droves. But that belongs to honesty.
The problem is that your number has so little significance. I can only roughly estimate a price per square meter from it; there is simply too much variability in the other items: land, outdoor facilities, garage/carport, kitchen. Of course, you should always do the overall calculation, if only to prevent a provider from shifting costs into other items (“price from foundation slab”). But throwing around 700k upwards as an absolute minimum for a rather cheap plot, I don’t find right. It can definitely be cheaper, even as a timber frame.