Plot on the northern slope – next steps?

The neighboring buildings show solutions that fit in. Ultimately, it is a question of the integration of the height line and whether a basement is desired as a result. I do not see a particular difficulty for planning if all owners agree.

@11ant The plots below are probably accessed from below. No heli.

Bottom left on the plan I also suspect that (typical case of fullscreen zoom of one's own plot with as little surroundings as possible - that the questioners always don't get that the context is first buried there), but left on the plan remains a trapped plot and must be accessed indirectly from somewhere.

but on the far left remains a landlocked property and must be accessed indirectly from somewhere.

The OP cannot know that. According to his statement, everything is accessed and no right of way on his property is necessary.

Perhaps the Google map I wanted would show something. But that is too much work to post here.

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Thank you for your clarification on the topic "preliminary draft".
In fact, we are not aiming for a dissertation with the house building project, nor is our house supposed to win any "beauty prize" in a Schöner Wohnen magazine.
A "normal" house with a proven room program / floor plan, which has already been implemented many times, to satisfy a normal family of four.

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OK, once the right architect is found, then first commission service phases 1-4 as a "package".
Of course with the further goal that he will cover all service phases, but this then with a further contract.
Right? Is there anything to consider when commissioning service phases 1-4?
For example, chargeable construction costs or minimum or maximum rate?
My research has shown that the architect should be planned with about 10% to 15% of the chargeable construction costs. Is that correct?

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The arrows above and below mean that the plot falls not only from south to north (see values on the boxes), but also slightly from west to east.
From southwest to southeast the plot falls by 1.5m, from northwest to northeast by 0.8m.
The western plot (approx. 470 sqm) of my parents would basically be possible for us to build on as well.
However, it is their utility and recreational garden, so they "live" into the west garden today, which is also nicely terraced (2 levels).
The southern plot would also be better "separable" and also easier to design with its own access road.
GoogleMaps image is attached.

Andy

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The arrows at the top and bottom indicate that the plot does not just slope from south to north (see the values on the boxes), but also slightly from west to east.
From southwest to southeast, the plot drops by 1.5m, from northwest to northeast by 0.8m.
The western plot (approx. 470 sqm) of my parents would basically also be possible for us to build on.
However, it is their utility and recreational garden, so they "live" in the west garden today, which is also nicely terraced (2 levels).
The southern plot would also be better "separable" and easier to design with its own access road.
GoogleMaps image is attached.

Andy

Thanks. But with that slope, you would overshadow the parents' house. In winter they would hardly get any sun.
If the plot is going to be sold anyway, of course, that is no longer an argument. ;)

in the picture you can see that the access roads of the eastern Heli plots are from the south.

As far as I know, the HOAI is no longer legally binding for single-family house construction.

But the building boom has its effects. Rising prices also for architects.

Service phases 1-4 are not a bad idea. Then you can have a general contractor build. They then make the working drawings with a draftsman. For a standard house, that always works. Only on a slope it is rarely an easy project.

@

I would always commission performance phases 1-4 together for legal certainty. All further phases as desired. Site management without an execution plan is almost pointless. I can't say anything about other offices, but with us it is the case that we collect the client's ideas, know the budget framework, and then internally, there is basically a "competition". Afterwards, we sit together and see which design comes closest to the client's ideas, or whether we combine different good design approaches into one design.

There are online calculators for the fee, but roughly I always say to a client that they have to expect 10-15% in additional costs. Okay, I always try to secure the €4,000 KfW subsidy for the client. With us, the thermal insulation certificate is always included, which is often not done by the architect but by the structural engineer. Every office will offer a bonus in some form. The office should definitely have visitable references.

In fact, we hardly ever accept designs that were previously discussed in forums or googled, since the consulting effort afterwards is usually far too high for us.