Searching for GU in the East Berlin area - are the requirements realistic?

and are now looking for a construction company as general contractor for a single-family house.

Since I always say you should gladly go with, but never instead of, a tender to a general contractor.

so far we have requested , . (we sent them the detailed documents).

But hopefully not in self-planned floor plan form, because:

How about starting first with a plan from an architect? The local construction companies will build whatever you want. No matter what nonsense you approve in the end (regarding the floor plan). These are mainly construction companies and not planners.

.

Apart from having to be very careful with the bill of quantities, Town & Country seems very serious, since it is a construction company directly here (just Town & Country branded). However, Town & Country generally apparently has a bad reputation. So far I rather have the feeling that I am negotiating with a local construction company than with an inflexible big player. What do you think? [ / ] We even looked at a house one street away from the main office of the franchisee MBB Massivhäuser für Berlin-Brandenburg GmbH

Franchisees are usually even more than just small construction companies, but in case of dispute you will be dealing with the legal department of the "brand." I always look in the region (except for the woods), but: never the construction company before the planning!
Look here with the keywords "individual contracting" / "self-contracting" / "Gerddieter," and where you find my "house building roadmap" in the services for the keywords dough resting and setting the course. Headquarters of a franchisee sounds strange ...

I also considered that briefly, but our project consultant does not necessarily see it as a way for us, and I also keep reading this or that online. In particular, I read that in the end it can even be more expensive than Heinz von Heiden or similar.

... "project consultant" on the other hand sounds like a vague word for a sales representative when provided by the supplier. Look in my house building roadmap.

Yes, we hired him separately. We successfully completed another very complicated project with him (not construction),

That sounds very interesting.

- Does the exterior wall make sense as described in the running text? Heinz von Heiden wants to sell us a 40cm+ exterior wall with hollow bricks and insulation, Town & Country 24cm aerated concrete.
- Do solid interior walls make sense on the upper floor? Town & Country says they do that, but do not recommend it because of frequent cracking. Preferably double-plastered gypsum walls or similar.

Solid construction is just as reasonable as stud construction. Both can have the same properties. One is not per se better, only different.

Whatever a wall "as described in the running text" may be, also read "Lightweight walls in solid houses?" and "The stone mantra of the eleventh."

He was also not completely against it per se, but sees it as riskier in terms of warranty, schedule coordination, and stress for us.

That is why tendering and construction supervision by the architect.

Currently I am already knocking on the doors of construction companies with a floor plan and requirements that are interesting for us so far. But so far rather with the somewhat bigger ones.

Show the floor plan. And forget the big names (among the masons). But as said: before choosing the companies first the planning with the architect (Module A), then the dough resting with setting the course, afterwards depending on the result of setting the course either Module B or only service phase 3 with the architect, and so on.

... "Projektberater" on the other hand is a foggy word for a sales representative when he is "provided" by the supplier. Look at my house construction schedule.

That sounds very interesting.

Yes, it is :p I probably shouldn’t go into more detail about it here publicly.

Whatever a wall "like in running text" may be, also read "Lightweight walls in solid houses?" and "The stone mantra of 11ant".

Sorry, I meant the exterior wall. Currently, I think that I would do quite well with 36cm aerated concrete without ETICS.

Show the floor plan. And forget the Big Names (among the stone builders). But as I said: before selecting the companies, first the planning with the architect (Module A), then the resting phase with setting the course, afterwards depending on the result of the course setting either Module B or just performance phase 3 with the architect and so on.

I have to submit that later when I have simulated it with a program. It was from one of the offers, but that actually made total sense to us.

Thanks first of all for your food for thought.

Currently, I think I would do quite well with 36cm aerated concrete without ETICS.

As said, 11ant Steinemantra, do not impose the wall structure on the contractor.

I have to submit it later when I have simulated it with a program. It was from one of the offers, but it actually made total sense for us.

Better not show anything "simulated with a program". What was from one of the offers?

Better not show anything "simulated by a program". What was from one of the offers?

The floor plan of one of the offers.

The floor plan of one of the offers.

And did you then inquire with the others using that?

for example, whether everything went smoothly or where there were points of contention; whether prices were renegotiated etc., how flexibly the provider responded to special requests and to what extent there are charges for upgrades.

There is nothing to renegotiate if you do not change the contract subject in writing afterwards. Discipline is the be-all and end-all; those who keep changing specifications back and forth pay the highest price (and those who have chosen a provider unsuitable to their demands). Burl wood and leather steering wheels are more expensive at Daewoo than at Jaguar.

There is nothing to renegotiate if you do not change the contract subject matter with a subsequent signature

I mean before signing the contract. We expressed wishes before signing the contract and the seller priced them quite generously. Things like blinds on the upper floor, generally electric blinds. That was no problem at all in inquiries with others. We basically took that as a basis with 2-3 additional wishes and still ended up 30-50k€ cheaper with others despite more wishes. That will not be the final price, because they definitely saved on things like the base slab, and the "cheaper" ones partly do not dispose of the construction waste, but that is already a difference. Because of the base price, our consultant initially advised us to look around, as he considered the offer overpriced for the service. But we definitely wanted the plot because of location and price.

In the end, the seller offered a house construction for a plot from a real estate agent. We signed a reservation contract with the seller for 10k€ for consulting services, which do not apply if you build with him or do not buy the plot. We used the offer to set up the financing but did not conclude any construction contract with the seller. Now the land purchase contract is signed and we want to renegotiate or switch providers.