Single-family house without a basement on a slope

On what basis did you put those together, did the OP email you any further information (requests, currently planned floor plan)?

I just looked to see if something useful could be done on the slope. A city villa just doesn't fit at all.

I also think that the house is completely wrongly designed for the plot. We ourselves have a hillside house with an ascending slope of 6.5m on a plot depth of about 28 m. We have a residential basement with an entrance area, children's room, children's bathroom and at the rear part (i.e. in the slope) a technical and utility room with basement windows (light wells) and a cloakroom as a sluice to the garage, but it has no windows at all. The children's rooms facing forward have completely normal windows, room height, etc., which has nothing in common with conventional basement rooms. On top of this basement, we only built one more floor. We wanted to build as wide as possible to capture as much of the slope as possible with the house (and the attached garage). This way we only need L-stones on one side to catch the slope for the boundary distance. In the garden area, depending on the depth of the plot, you can work with a slope that can be nicely planted, or you can build another retaining wall and thus terrace the terrain. Of course, this costs money again.

In my opinion, 25k is never enough for your planned outdoor facilities. No matter how much personal effort you put in. Your entrance stairs alone will cost quite a bit. Do you even have heavy equipment for the outdoor work? How many meters of concrete block wall are you planning to build? Eventually, you reach your limits mixing the concrete yourself. You already want to contribute a lot of personal effort in the construction (if I remember correctly, shell construction as personal effort). Do you have a friendly company supporting you in the background? Or how is the personal effort supposed to be done? Friends can also lose interest if they are supposed to help from the shell construction to the garden.

How many meters of Schalsteinmauer are supposed to be built? At some point, mixing the concrete yourself reaches its limits. You already want to do a lot of the construction work yourselves (if I remember correctly, shell construction in EL). Do you have a friendly company in the background for that? Or how is the EL supposed to be achieved? Friends also lose motivation when they have to help from shell construction all the way to the garden.

Not only does that never work with 25k, but it also never holds statically up to 3 m height.

Not to forget that all securing work must be done before the house construction. You have to fit your own work into the schedule of the construction company. If something takes longer, it is great for the construction company to no longer feel responsible for on-time completion.

I also think that the house is completely wrongly planned for the plot. We ourselves have a hillside house with an ascending slope of 6.5m over a plot depth of about 28 m. We have a basement living area with an entrance area, children's room, children's bathroom and in the rear part (i.e. in the slope) a technical and utility room with basement window (light wells) and a cloakroom as a buffer zone to the garage, which has no windows at all. The children's rooms facing forward have normal windows, ceiling height, etc., which has nothing to do with conventional basements. We built only one more floor on top of this basement. We wanted to build as wide as possible to intercept as much of the slope with the house (and the attached garage) as possible. This way we only need L-shaped stones on one side to hold back the slope for the boundary distance. In the garden area, depending on the depth of the plot, you can work with a slope that can be nicely planted, or set another retaining wall and terrace the terrain to level it. But of course, that costs more money. In my opinion, 25k will never be enough for your planned outdoor facilities. No matter how much own work you contribute. Your entrance stairs alone will cost quite a bit. Do you even have heavy equipment for the work outside? How many meters of shuttering stone wall are we talking about? At some point, mixing the concrete yourself reaches its limits. You want to provide a lot of your own labor on the construction (if I remember correctly, shell construction in EL). Do you have a friendly company in the background? Or how is the EL supposed to be provided? Friends also lose interest if they have to help from the shell construction to the garden.

Yes, I am building the shell construction together with my father. We did the same 8 years ago, it worked very well. But by now I also realize that the city villa definitely does not fit this plot! I will call the architect on Monday and tell him about my plans. Attached is a picture, I think something like this with possibly different dimensions should also work according to the development plan.

Yes, I am assembling the shell structure together with my father. We did the same 8 years ago, it worked very well. But I now also realize that the city villa definitely does not fit this plot! I will call the architect on Monday and tell him about my plans. Attached is a picture, I think something like this with possibly different dimensions should also work according to the development plan.

Then you have a 2.5 house, is that within the budget? Please upload the floor plans of the house.

Have you looked at my suggestion? It is much better tailored to your plot. A garage in the south of the basement makes no sense. Likewise, so few windows facing southwest do not make sense.

Please provide the conditions of the development plan. Is the garage allowed on the boundary?