Land planning on a gentle slope

Here so that @11ant can better imagine it.

Where could I have been unclear about that?

In the house 1.5 m difference. Of course with basement or better lower ground floor if the budget does not allow it.

For good reason, I question the assumed floor area including its location. Depending on the format and with the rotation of the house axis parallel to the contour lines, less than one and a half meters might also be possible here. The closer the lower ground floor is to a full story, the more clearly this points toward a residential basement. In any case, I see a willingness here to advise against dreaming of the house and garage being on the same level.

Thank you for your answers. Please excuse the late reply.

Is there no development plan?

No, there is no development plan. The plot can be developed according to the neighboring buildings up to 2 full floors. Apart from the 3 m distance to the property boundary, there are no restrictions.

In any case, I see a willingness here advisable not to dream of level alignment of house and garage.

A garage is not planned. A carport (for one vehicle, approx. 3.5 m wide) is planned on the northern property boundary as a boundary development, which means the building area is located further north than in the sketch by and thus stands less on the slope of the hill. The carport may also be positioned higher than the building.