Farmland turns into building land: landfilling, foundation costs, and procedures

Your neighbor to the west has somewhat exaggerated that in my opinion.



The rest on the street has rather only built 2-3 steps higher.

I would inquire whether the water stood there during the last extreme flood.

Can't you choose a better plot, directly on the main street?

Get to know your semi-detached house neighbor at building plot No. 5, then we can talk further. I suspect the existing road runs mostly flat north/south, but the terrain slopes off west/east. The side streets will then probably lead down from the unchanged existing road.

In WA2 and thus plot 4/5, according to the development plan, detached houses are allowed to be built if the adjacent plot is also/is going to be a detached house ([linking unfortunately not allowed]). The plots are being sold by the Sparkasse, and they do not see a problem with this either. Therefore, I am planning a single-family house.

The area is a flood risk zone, with pressing groundwater. According to the simulator, the dikes are designed for a 100-year flood (is this the case everywhere?). The last extreme flood was in 1882, when indeed the land was underwater and everything was destroyed. Since then, flood protection is said to have been improved...
I am trying to find out whether the city can provide advice on this topic and in this area.

The position of a single-family house, I think, is relatively clear, as drawn by hanghaus2023: carport/garage completely to the north and the house directly adjacent to it, so that the southern area remains free for terrace and garden. However, I would have thought that the carport/garage must also maintain the 3m distance to the north. This allows the position to be estimated ±3m.

I assume the existing street N/S is largely level, but the terrain declines W/E. The cul-de-sac streets will then probably lead down from the unchanged existing street.

This is what the Sparkasse also told me now in a non-technical form. "He" also assumed that the plots will be leveled/filled to street level (but of course by the buyers). Unfortunately, I still do not have an elevation plan.
From this, I conclude that they will fill the transition from cul-de-sac street to the existing street and then let it slope down slowly towards the field.

In WA2 and thus plot 4/5, according to the development plan, detached houses are allowed if the adjacent plot is also or will be a detached house (linking is unfortunately not permitted). The plots are being sold by the Sparkasse and they also see no problem with this. Therefore, I am planning a single-family house.

D 2. In the general residential area WA 2, detached houses are exceptionally permitted if it is already ensured by existing development or legally secured that no single semi-detached house remains or can be built on the adjacent building plots.
That means you have to come to an agreement with your neighbor and persuade the building authority to consider this as already done. Good luck, and have a plan B ready if necessary!

This is what the Sparkasse has now told me in a non-technical form. "He" also assumed that the plots will be leveled/fill up to street level (but of course by the buyers). Unfortunately, I still do not have an elevation plan.
From this, I conclude that they will fill up the transition from the dead-end street to the existing street and then have it gradually slope towards the field.

I assume that the dead-end street slopes down from the junction with the existing terrain’s slope and that the buyers will have to manage to fill up to the (new concerning the dead-end street) street edge.

Have the plots already been staked out?

Have the plots already been staked out?

What is meant by that? Surveyed? That is supposed to have happened last year. Or do you mean reserved? Apparently, the plots bordering to the north have interested parties, but the plot to the right currently does not.

I also spoke with the city (drainage department). They were aware of the stormwater issue and also assume a buildup to sidewalk height ("otherwise it wouldn’t work because of wastewater reasons"). Unfortunately, there was no further technical advice available. I am always advised to discuss it with construction companies/architects, which will probably be the next step.

Assuming everyone builds up to the same height. Then there would be no slope between the plots. But what if the plot next door, for example, remains vacant for a longer time? Then you would have to secure it again after all.