Plot selection in the new development area

Dear house building forum,

In our village, building plots in two development areas were recently allocated simultaneously, which means that almost all building plots in our preferred development area are still available. These will be advertised again in the coming weeks, and we are now considering which plots would best suit our ideas so that we have 2-3 favorites for the allocation. We have already given it some thought and are currently leaning towards plots No. 22 + 23 or alternatively No. 8 or 9. One question currently on our minds is whether the southwest orientation of the first-mentioned plots will lead to a terrace that is too hot in summer, as we have been hearing more and more frequently about this from acquaintances. On the other hand, we would like to create a (small) vegetable garden with a greenhouse, so I thought a southern orientation would be advantageous. Overall, we hope for suggestions and perspectives that we have not yet considered in order to ultimately make the best decision for us.

Development plan/restrictions:
Plot size: approx. 600sqm
Slope: no
Floor area ratio: 0.4
Site coverage ratio: 0.8
Edge development: no
Building boundary
Number of parking spaces: 2
Number of floors: 1.5
Roof type: gable roof
Style: modern
Maximum heights/limits: in WA1 the ridge height is 4.50m and in WA2 it is 6.50m; GH is 10m for both
--> previous favorites marked with a red dot in WA1, with a green dot in WA2
Further requirements: roof pitch 35-45 degrees

Currently, we are also wondering how low the knee wall will be with a ridge height of 4.50m and whether we might rather tend towards WA2 and a two-story house depending on that. I apologize in advance for the plans, as I have already seen much more nicely prepared examples here and the individual plots are not marked on my development plan, but I hope the combination of both plans makes the most important details recognizable (don’t be surprised, I have removed personal data of already reserved plots from one of the overviews).

Many thanks in advance for your input!

I would still appreciate feedback. I think that a few pieces of information were missing or were difficult to discern in the previous excerpts; I would like to provide these here. If more is needed, please let me know. North is at the top of the plan.

My favorite is #9. Garage is located in the north and no green area in front of the doorstep.

in WA1 the TH is at 4.50m and in WA2 at 6.50m; GH is 10m in both

I do not understand the different THs, the building area is almost flat. What are the water law particularities of the green-dotted plots?

I do not understand the different TH levels, the development area is almost flat. What are the water law-related special features of the green-dotted plots?

Unfortunately, I cannot say exactly what the reason is either. However, this is normal in previous and other current development areas in our city... it seems as if the construction of so-called urban villas is supposed to be limited or influenced by this. But that is just an amateur guess for now. The following is stated in the development plan for area F1: "The green area marked with F1 is to be designed as an infiltration basin; willows and black alders are to be planted and permanently maintained at suitable locations." Regarding the delimitation of areas with water law-related regulations, the following applies: "In the area of the delimited area according to §9 paragraph 1 number 16d and paragraph 6 of the Building Code, water law regulations are prescribed. In the designated area, the rainwater falling on the building plots must infiltrate into vegetated areas or infiltration systems on the plots themselves. In doing so, the worksheet DWA-A 138 and the information sheet DWA-M 153 must be observed."

Unfortunately, I cannot say exactly what the reason is. However, this is normal in previous and other current construction areas of our city.. it seems as if this is meant to restrict or influence the construction of so-called urban villas. But this is just a layperson's guess.

In a state governed by the rule of law, the layperson, in their capacity as a citizen, should not have to make assumptions but should be provided with a comprehensible basis for administrative acts. There must be a justification for the development plan; such matters must be included (in the "textual provisions" only THAT, but in the "justification" also WHY). Otherwise, the development plan is vulnerable to challenge.

Currently, we are also asking ourselves how low the knee wall is at a ridge height of 4.50 m and whether we should instead tend towards WA2 and a two-story house depending on the situation.

Both eave heights can be managed. But you must not be arbitrarily restricted. What an eave height is "worth" in practice depends significantly on the reference height. Assuming a reasonable "0", then "+4.50" minus a story height of, for example, 2.85 m results in a knee wall of 165. The knee wall is practically also a window separator; therefore, "favorable" knee walls lie in the range of 100 plus or minus 20. See also (external) "How the Knee Wall Influences the Window Question in the Attic."