Bungalow with basement for single-family house with 60m2 office, is it reasonable?

Again, many thanks for the numerous responses. To summarize, I take away the following for myself:

[*]A living space in the basement costs at least as much as in the house itself
[*]A living space in the house area would be preferable regarding the property's value
[*]The remaining basement area in the bungalow would be too large and expensive as usable space
[*]60m2 for an electronics workshop would be a bit exaggerated :)

Actually, the last point is more of a nice wishful idea. Realistically, however, 30m2 is more than enough. Therefore, the following variant seems to fit well in the end:

[*]No basement
[*]Single-family house 1.5 stories with a high knee wall
[*]Work room on the upper floor, two rooms combined

The plot is already available. The budget for the complete construction including kitchen, incidental costs, and outdoor facilities is 500,000 EUR. The goal is rather to come in somewhat below that.

Hope the proposal makes more sense this way?

I had read it as if the workspace in the attic would have plenty of space… but I’m also not really up to date on the topic at the moment ;)

I'll throw the 1 m rule from into the room. The height difference is 1 m in the area of the house.

So far, I haven't read anything about a slope. But 2 m on the property is already something.

I’ll throw the 1 m rule from @11ant into the ring.

Um ... what is it exactly? *curious*

Uh ... what is it then? *beingcurious*

You disappoint me.
FROM 1 m terrain difference in the house area, a basement can be worthwhile. I thought you had written that several times before.

FROM 1 m terrain difference in the house area, a basement can be worthwhile.

I don't think I can remember having claimed that so (?)

I thought you had written that several times already.

Not to my knowledge, but thanks for pointing out that you could have misunderstood it that way. My (not "one-meter-", but "basement") rule is: "for every started two decimeters of height difference within the footprint area, a basement avoided costs roughly ten percentage points of a built basement flat-rate." Your conclusion that from one meter of height difference on, you enter the spheres where you at least have half a basement price hanging on you anyway is probably correct, but in my opinion already at the threshold between popular simplification and pub talk slogan as an introduction to naive calculation. Then I could have just called my basement rule a farmer's rule as well ;-)