Floor plan design single-family house (city villa 140 sqm) on a slope with double garage

The truth probably lies somewhere in the middle. I would have placed your project at around 350K euros. At the moment, though, everything is still just guesswork.

That would of course be nice! I'm now on my way to the building authority. Is there any other important information you would need from there?

...I also planned to uncover the basement and build a raised terrace on the ground floor. Unfortunately, I had to abandon this plan. Even though the L-stones and filling would have been eliminated, I would have had to transport and deposit about 900 sqm of "loose soil." For Z0 soil, I had an offer of €23k. The terrace would have cost another €30k. In addition, plastering the basement side, stairs down to the garden. Still, L-stones to catch the carport €10k, etc.

However, since the soil analysis showed Z1.1 soil, the earthworks + depot costs would have tripled. So the nice idea was for nothing.

Here you also quickly realize how important a soil analysis is. If the analysis is only carried out at the depot, you have already "lost" in such a described circumstance.

Ok, but I already requested that yesterday (I only have one soil analysis for the entire construction area where 9 spots were tested) and am now waiting for an offer from them.

What you might still do is find out the actual figures for the incidental building costs, especially for costs that are independent of the floor plan. For example, Telekom wants almost 800 euros, city utilities, etc.

Most of the incidental building costs like Telekom etc. seemed to be correct in the offer from the construction engineer, judging by the data checked here in the forum. All values concerning the plot, such as notary fees, were well calculated. We even had some left over.

Hi Franky, you just have to accept that people attribute quite a bit of naivety to you.

Okay, you have an offer from a construction engineer. Personally, I would have already been suspicious at the keywords "from Lithuania", "kit" etc. (and since I also like to have my materials regionally sourced, that would never be an option for me anyway). At the very least, I would have compared the individual items with offers from other general contractors, prefab house builders, etc. There is more than enough to find on the internet. Then you would definitely have noticed that, for example, the already mentioned costs for electricity don’t add up like that (okay, maybe for a Lithuanian doghouse). But you have to sit down and deal with the trades, the offer, the differences in the offers etc. I need to have an idea of what I want (and what I don’t). But that’s not very clear to me with you.

You bought a plot without thinking about what is possible there or not. I’ll be honest: I think a sloping plot is great because it offers great possibilities. But you don’t have to do much research to realize that these great possibilities unfortunately also cost a lot more. The Lithuanian doghouse usually won’t have been built for a slope.
I wouldn’t have bought your plot for another reason alone: roads on both sides! Is there a sidewalk on each side, too? I wish you snow-free winters because you do realize that as the owner you are responsible for clearing the sidewalks at your property? Usually, there is a clearing ordinance and at least where I am, it should be cleared before 7 a.m. Maybe that’s not often the case with you, but my alarm bells rang when I saw the site plan. With the meters to be cleared at that property, you could almost think about a snowblower. But maybe that’s a rather Bavaria-specific problem (or just where there is still snow).

You fantasize about a city villa, get an offer for a Lithuanian wooden house, but still don’t know exactly what the development plan for your plot stipulates.
How does that work? I can still understand that you jump on a plot and only afterwards think about what you can build there. At least here with us, everyone would understand that because plots are scarce. But at the latest then I get all necessary and possible information. But you get a dubious offer (what does this hut even look like? Similar to your favored city villa??? I can hardly imagine that. How do you get the absurd idea that the offer could be a benchmark?) without knowing the regulations, without being clear about what a sloping plot means etc.

You put the development plan and an offer here and unfortunately it gives the impression that you haven’t dealt with it yourself at all and hope that it will be spoon-fed to you. That’s the wrong approach! YOU (!!!) should work yourself into the subject enough to be able to recite the specifics in your sleep.
You get the hint that over the course of the now 34 pages enough references to prices and offers have been given and you should please look those up again. Your answer: oh, that’s too complicated for me now, can you tell me again?
Hello? And you don’t understand the sometimes somewhat aggressive undertone of some posts??? Honestly not?

A very clear message now from my side (and this is really not meant aggressively, but honestly):
Get off your ass! Make an effort, dive into the subject, walk around, look around, ask stupid questions, but remember the answers, compare, weigh up (what do I want, what not), but don’t expect everything to be served to you and then for a sensational bargain price. That doesn’t work.
You can do it, get everything "served" to you. But that service costs money. You can get that with an architect’s house, but that gets expensive. Anyone with a limited budget (and who here doesn’t?) will have to take many things into their own hands with their own commitment.
After the mentioned 34 pages, unfortunately I still have the impression that you are waiting to be served and I still cannot recognize your willingness to deal with it yourself (development plan, looking at model houses, asking around, collecting info etc.). And I don’t think I am the only one who feels that way. That doesn’t necessarily motivate people to support you, which everyone here is happy to do.
It would actually be funny that someone is competing here with a plot that poses special requirements, hasn’t even approximately dealt with the development plan, but wishes for a city villa and thinks that the (dubious and unchallenged) price from an offer for a Lithuanian kit prefab wooden house is a reference.
It would be, if it obviously wasn’t meant seriously...

I only noticed at a glance that Telekom doesn’t fit, for structural engineering we also had to pay more on the slope, the geologist cost four figures and without the report there was no structural engineering. If Telekom doesn’t fit, the question is whether the connection for construction power, water etc. is correct.

We really got screwed with the ancillary construction costs. You get an offer, half is missing, you notice months later, some weren’t even mentioned (if only we had read more here), others were estimated way too low.

Individually all no big deals. Just here 800 euros, there 1500 euros, there 400 and suddenly it’s a five-figure amount on top.

It’s all small stuff. For you it’s important first to clarify what happens with the backfilled excavation, how you build afterwards, what the structural engineer says. Our house cost about 40,000 more than a flat ground slab. Slope-side wall as a white tank with insane reinforcement, floor slab the same, thicker floor ceiling.

In Lithuania, there is one of the most modern plants for cross-timbre wood panels - not all bad. I would rather ask how it looks with the warranty, etc. What are the payment terms?