Recommendations for a construction company or general contractor near Offenburg/Lahr

Hello,
We have completed construction planning up to service phase 4 with the architect and are waiting for the building permit.
Does anyone have experience with construction companies or general contractors [GU] in the Offenburg/Lahr area?
Another question: How long should detailed planning take? and Can a [GU] take over the detailed planning?

Hi, we are currently in the bidding phase with a company that already knocked 3 competitors out of the race in terms of price and quality. We are building turnkey with Poroton, brick by brick.

We will likely be building with them as well. Write to me, then I will send you my contact. Ventreri@icloud.com

We have completed construction planning up to service phase 4 with the architect and are waiting for the building permit.
[...] Another question: How long should detailed planning take? And can a general contractor take over the detailed planning?

Why do you want to work with the architect only up to the building permit, why shouldn’t he also manage construction?
I would not make a cut after service phase 4. Service phase 5 builds upon the previous phases 3 and 4. More thought goes into every plan than can be noted in the plan drawing. If you switch planners between service phases 4 and 5, these get lost. The result can be avoidable construction defects. General contractors produce a completely different quality of detailed planning, with a different objective. It is not desired to mention external sources of information here, but you can find in my profile under "Information" the way to contact me even as a newbie via private message.

Does anyone have experience with construction companies or general contractors in the Offenburg/Lahr area?

There is a section "Experience with construction companies" where a variety of construction companies from all federal states and at least most regions are discussed.

Does anyone have experience with construction companies or general contractors in the Offenburg/Lahr area?

P.S.: it is best to do a tender with the architect as well. However, such a tender cannot be properly based on performance phase 4 yet. General contractors can be a good choice; I would never exclude them from tenders. But firstly, it is not really a good idea to take general contractors only as a last resort out of the dilemma of not knowing anything about awarding contracts as a layperson. And secondly, without your own construction service specification, you inevitably end up, in my opinion rightly so, having to compare the construction service specifications of the various providers as a kind of punitive task. That is not a clever move.

Hello and thank you very much for the response.
So, my architect himself recommended that he handles service phase 5 himself and then hands it over to the general contractor starting from service phase 6. He says he will not do the construction management and finds it sensible if the general contractor takes over everything.
The reason I also want to do service phase 5 with the general contractor is because of the time. My architect says he would manage service phase 5 at the earliest in 5-6 months. I know the work in service phase 5 is not little and therefore also 25% of the total sum. But 5-6 months is really long in my opinion. Therefore, the consideration was whether to do it directly with the general contractor.

So, my architect himself recommended that he handles performance phase 5 and then passes it on to the general contractor starting from performance phase 6. He says he will not do the construction management and thinks it makes sense if the general contractor takes over everything.

My condolences on your choice of architect. Is he an artist, a slacker, or both? - in any case, he’s a joker if he wants to hand over to a general contractor starting from performance phase 6, because such a contractor is only appointed in performance phase 7. Performance phase 5 and performance phase 8 actually form a two-part series (never separate “st”, because it hurts him!). At least it’s a small gain that performance phase 5 is still done by the same person who did phases 1 to 4.

The reason I also want to do performance phase 5 with the general contractor is because of time. My architect says he would only be able to complete performance phase 5 at the earliest in 5-6 months. I know the work in performance phase 5 is not little, hence also 25% of the total sum. But 5-6 months seems really long to me. Therefore, I considered whether to do it right away with the general contractor.

He shouldn’t have accepted the commission at all if he had no time for it. Nobody even needs five months for performance phase 5 if they have already been involved in the project from phases 1 to 4! (we’re not talking about a large hospital here, but a single-family house). In that respect, I understand your consideration, but I would point out that a general contractor does not perform performance phase 5 at all. They only produce the most rudimentary working plans; you can look forward to drywall instead of detailed planning. How did you contract with the architect so that he can now just drop out?