Construction prices for 2024/2025: regional supply

Are you at least of the opinion that the trades highlighted in green (supposed to be carried out by the said contractor) are realistic?

If you give us the base service description including areas etc., we can answer that.

However, we do not know how to get such a thing without directly burning money.

Look for free initial consultations with local architects. Check catalogue houses. Etc.
You already know that you need about €3,000/sqm (smaller houses are more expensive than large ones, bungalows more expensive than multi-story buildings). You don't need such "useless nonsense" that you're doing with the contractor.

3000€/sqm, that is the reference value for a standard house in a compact cuboid shape. For this L-construct, I estimate 3500€: larger foundation slab, additional earthworks, etc. Added to that are ancillary building costs as well as utility connections and outdoor facilities.

Now to the question: Is everything listed in this cost overview and if so, are these costs realistic?

Or are there actually items missing that will definitely come up in reality?

At least do you think that the green highlighted trades (to be carried out by the mentioned contractor) are realistic?

Again: you can’t say that: take the masonry work for example: do you have the same window dimensions, same sill heights, or is there additional effort? Window widths also play a role in walls and differences that are cost-neutral and deducted again. The windows are not known here. How thick are the walls, which type of brick is used? Is there insulation?
There is no drawing to refer to.

What is meant by drainage channel, what by drainage?
What is the roof made of? What is meant by concrete work?
Interior plaster: what quality standard is done for the price? Which one do you want?
Tiles: what dimensions? What sqm price? How much area?
Room ventilation work: this is not a controlled residential ventilation system… what do you expect from your room ventilation? Feels like the price for everything is too cheap.
Bathroom fixtures: too cheap for design, too expensive for a budget outfitter.
Lights and lamps: are they gold-plated? Way too expensive for 2-4 exterior lamps.
Electrical: are 20, 50, or even 100 sockets included in the price?
Carpentry work: what is being carpentered in this house?
Roller shutters: again the question, for how many and how large windows? Electric or manual crank? Aluminum or plastic?
Etc. These positions are only picked out now. Ultimately, you have to ask yourself for each position: what exactly is included in the price?
The Sims house is no reference on which costs can be estimated or allowed, nor a detailed cost estimate (without a description of the construction services).
A 4-meter-long garage is simply not usable. 6 sqm small storage instead of an office in the middle of a house, and where is the storage space? Where is the sofa supposed to stand? Where will the laundry be washed? Hallway is bigger than a child’s room? A house wider than 20 meters.

The numbers are hardly worth anything without a description of construction services combined with this drawing. Whether this is trustworthy, you have to answer for yourselves.

The plot is 516 sqm without a slope and already fully developed by the municipality

please show a plan of the development area, if town villas are being built everywhere there, you will constantly be in their shadow

The plot is 516 sqm without a slope and already fully developed by the municipality.

I generally do not trust laypeople to accurately assess slopes / non-slopes.

Do you at least think that the trades highlighted in green (supposed to be carried out by the aforementioned contractor) are realistic?

We know nothing about this quasi reference house. By the way, we believe there is too little basis known here. Is this car yellow? - Answer from Radio Yerevan: basically 42 ... (I am not responsible for missing emoticons).

However, we do not know how to obtain one without directly burning money (one contractor wanted 5,500€ immediately for an input plan). If we make this and then decide against building, we have thrown this amount away.

An input planning (service phases 1-4), i.e. the full "necessary architectural services," is also extremely like using a sledgehammer to crack a nut if it is only about preselecting construction companies. The search for construction companies would cost me about 760 euros for the "course setting," the "selection support" just under 1,020 (each individually), but both are still too comprehensive here. I do not know the prices of colleagues. For about 3k you already get a service phase 1-3 planning (phase 4 is then done, for example, by the general contractor) with individual young architects, although prices are currently rising sharply and billing according to HOAI is increasing.