Floor plan offer from the architect - your opinion

We would like to have everything including the building application done by the architect and then build with a construction company.

But we are not sure if something specific is missing in the offer or needs to be considered.

Well, even if you want to work with a construction company – who will take over the construction supervision? The builder, who is always only looking out for your best interests?

It might be helpful to know that he does this part-time as a small business owner.

I have never heard that from freelancers before (?)

All documents are handed over in paper form according to the standard as well as in PDF format.

Additionally, a format for further digital processing could be helpful (if he works in CAD and does not generate the drawings from a semi-professional house planner software).

- Input planning M=1/100 floor plans, elevations, and sections

You are only allowed to build according to these plans, but you cannot yet!

We would like to have everything, including the building application, done by the architect and then build with a construction company.

Otherwise: I recommend commissioning all service phases for a new building (staggered). In the tenders and construction supervision, Mr. Architect also plays to his strengths.

I always recommend the following (see also, unfortunately not linkable here and to be googled with quotation marks: "Ein Hausbau-Fahrplan, auch für Sie: das Phasenmodell der HOAI!"):
1. "Module A": service phases 1 and 2 with the option to extend afterwards if the "chemistry" with the architect fits
2. (very important!): a break, which I call "dough rest"
3. "Module B": service phases 3 to 5! (because the detailed plans should come from the hand of the designer)
4. (optional) from "Module C" (service phases 6 to 8) at least the tender – but ideally preliminary planning, planning, tender, and construction management come from the same hand!
An architect who only offers service phases 1 to 4, I would never accept: these are usually theoreticians with two major weaknesses, namely construction supervision and cost estimation.

Our project: mid-terrace house 6mx12.5m,

In this inconspicuous introduction lies the actual explosive material: a mid-terrace house planned without coordination with the two neighbors is a big mess, and one can (by building deeper than at least one of the neighbors) very easily even make a huge mess out of it: :-(

Well, even if you want to work with a construction company - who takes over the construction supervision? The contractor who always only has your best interests in mind?

Here we had the idea that our neighbor supervises our construction in parallel. He will also build once the area is developed and does a lot himself (he comes from the industry - construction manager).

But nothing is fixed yet as we are in the preliminary planning phase.

Here we had the idea that our neighbor monitors our construction in parallel. He will also build as soon as the area is developed and does a lot himself (comes from the industry - construction manager). But nothing is fixed yet because we are still in the preliminary planning.

On a fee basis or for a crate of beer? In the second case, it will be difficult if he ever can't do it because of lack of time or if there are scheduling conflicts between his house and yours. I would never in my life commission my future neighbor. Always only someone with whom I can have a serious argument in the worst case without ruining the neighborhood relationship.

On a freelance basis or for a crate of beer? In the second case, it will be difficult if he can't make it sometimes because of no time or if there are time conflicts between his place and yours. I would never in my life commission my future neighbors. Always only someone with whom I can have a proper argument in the worst case, without the neighborhood relationship being ruined.

Yes, you are also right. But there are certainly other alternatives here.

Here we had the idea that our neighbor would monitor our construction in parallel.

What you have to do, you don't need to do ;-)
If you already know at least one of the two neighbors: then just get started, coordinate your planning!

But nothing is fixed yet because we are in the preliminary planning stage.

Without the architect, you should not have established more than a requirement. Don’t go there with already "half-finished" plans!