Property purchase - Risk of a "linked transaction"?

With this approach, I was able to answer the questions on the questionnaire in good conscience, even though we had already planned extensively with a construction company before the notary appointment.

What contracts/commitments did you have to make to the construction company for this?

What contracts/assurances did you have to provide to the construction company for this?

I deliberately wrote "dated" ;)

The tax officers usually carry out plausibility checks.
If everything sounds quite plausible, they won’t investigate further and will approve it. They don’t have unlimited time to thoroughly examine every case.
If something seems illogical at first glance, they will investigate further and request additional documents for evaluation.

So you have to make it look good at first glance. This includes having multiple quotes and the correct order.

When will the questionnaire arrive, is there a deadline that the office has to adhere to? Or at least a usual timeframe in which they check?

I deliberately wrote "dated" ;)

So you have to make it look nice at first glance. That includes several offers and the correct order.

So in truth you had already signed the construction contract before purchasing the land?
My main concern was that apparently we are being forced to take this step, although from my point of view a pure planning contract should suffice and then the rest should be signed only after the land purchase.

I did it that way. Although there is actually no connection between the seller and the house construction company. So I could have also built with another one. It just presented itself because my neighbor behind was building with the same construction company and was already further along in the process and tied to the company at that time. At the time, I naively hoped for synergies by building with the same company. So far, an advantage can only be seen with the [GÜ].

Today, I would probably act differently.

You should definitely not sign the house construction contract before purchasing the land for the reasons mentioned. Otherwise, you can firmly plan for the real estate transfer tax, with

First contact with the regional sales manager of the prefab house company, who put us in touch with the landowner (private person).

Also, you can save yourself the planning contract for 4,000, why should they put much effort into the planning if you have already committed to the company to build exactly the house described in the contract (and that you actually don’t want to build).

And I wouldn’t rely on the right of withdrawal in case of missing financing either. If it is as the seller claims, then he surely has no problem including an explicit – and free – right of withdrawal for the case that you (for whatever reason) do not get the specific plot or it is not buildable, etc. Then you will quickly realize whether that was meant seriously... Since the seller is often an independent sales representative and not employed by the house construction company, he has nothing to do with you after signing and everything you verbally agreed with him is of no interest to the house construction company...