Farmland as a building plot - is the soil suitable for house construction?

For normal farmland, I generally consider the "contamination" to be manageable. Fertilizers + pesticides. Here, you even have to pay for such farmland soil; it is sold as topsoil.

Alright, then let's be surprised. I just hope that not too much needs to be removed, so that in the end our budget isn't blown.

I too would not worry too much about it at first.

If it was farmland, crops were also grown on it. These products eventually ended up in our food (either directly, e.g., grain/potatoes, or indirectly through fodder plants). If the soil is so heavily contaminated, in my opinion, its products should not be used further processing.

I also think the municipality is just protecting itself. Ask the municipality if you can get the soil report, if it is available. Once you have the report, you just need to find someone to evaluate it. They will then be able to tell you whether the soil is fine, slightly problematic, or needs to be replaced. If no report is available, you know that it is generally only a precautionary statement.

Alright, then let's wait and see. I just hope that not too much needs to be removed, so that in the end our budget isn't blown.

We are currently building in the Rhineland as well... it can quite easily happen that you find clayey soil under the topsoil and need to replace up to one meter.

: Thanks for your reassuring post. I will inquire soon about an expert report.

: Nice to meet someone from Hürth here in the forum, even if you apparently will be moving away soon If it is "only" one meter, the costs for a small property will remain manageable. If you go a few meters deeper, it can quickly become very expensive.

Well, with disposal/delivery you quickly reach five figures even with a small plot... even with "only" one meter.