The agony of choice - which building plot to choose?

Hello everyone,
my husband and I (plus soon 3 children) would like to apply for a plot of land in a new development area in the middle of SH. Since 30 out of 40 plots are allocated based on points, we expect relatively good chances with 3 children.
As information about the development area: The area is divided by several hedgerows, which partly belong entirely to the property and generally may not be used additionally with a 3m wide hedgerow protection strip. Therefore, many plots have a significantly smaller net area than stated. At the western edge, there is only a 3m wide embankment without an additional protection strip.
Furthermore, the area is divided into single-story construction (blue) and two-story construction (purple). These plots also differ in purchase price, €150/m2 for blue, €170/m2 for purple. There are also a few plots that are developed as flagpole plots. Here you have to buy the flagpole at the regular plot price; other plots share the rear access and this is sold to the rear owners only at a very low amount (€25/m2, proportional).

Our criteria for a plot are as follows:
- preferably large, gladly over 700m2 net, but there are only a few plots that have this net area
- not directly on the street (although it is a play street, we would like it a bit quieter, especially since we also have a dog and our current garden is also facing the street and we don’t want that again)

Further information about the plots: The single-story ones may generally have a wall height of 4m and a ridge height of 8m. So, only relatively normal single-family houses with a small knee wall can be built here.
The 10 plots marked with L will be drawn by lot.

We can apply for 3 plots based on points and for 3 plots in the lottery.
Our current favorites here are:
- 18 (clearly number 1, relatively large, existing hedgerow without protection strip, behind it a meadow which at least will not be built on in the next few years. Open and quiet)
- 17, 9 (unfortunately dropped, as acquaintances who we coincidentally met on the construction site are applying for these and have a higher score)
- 26 (very large, but from the 919m2 only "about" 730m2 net area remain; disadvantage: flagpole, resulting in significantly higher costs for the plot)
- 19 (one of the larger ones, somewhat special shape, the house can be oriented parallel to the street and then has a private garden behind it)

In the lottery we choose plots 12, 13 and 25. (However, we do not expect great chances here.)

At the moment, we are struggling to prioritize between 19 and 26. There is about a €70k difference between the two plots after property transfer tax, development costs, etc. Is plot 26 worth the extra cost? The net area is about 100m2 larger and one can build more freely since 2 full stories are allowed.

What would be your favorites? Are we overlooking anything? How could we possibly improve our chances with our choice?
Oh yes, to the south there is a somewhat busier main road, to the north and east it is a quiet residential area, to the west meadow.

Best regards
EinHausfür5

I would not take a plot with only one floor allowed if you have three children. You would have to significantly increase the ground area to get properly nice, usable rooms in the attic with 100cm KS.

19 (one of the larger ones, somewhat special shape, the house can be aligned parallel to the street and then has a private garden behind)

The 19 is totally distorted, there are additional problems. For example, I don’t see any adequate and protected garden area there. I simply can’t imagine why you would favor that with this front presence at all?!
Draw your idea in yourself,...
24, 28, 34... I hope I remembered the numbers correctly... (the legend is missing for WA 8)

Thank you for your feedback, yes, you are right, the KS is not very high. We definitely want to build with a basement and plan to include at least one dormer on the upper floor. I had already marked the most interesting plots to get a rough idea of how to place things. We initially estimated the house to be 9x12, which should actually allow for reasonable children's rooms. Currently, we have a semi-detached house, where the children's rooms are about 10m2 each. If we end up with about 14 m2, that would be completely sufficient for us.

The 19 is irregularly shaped yes, but because of that I also hope that we will have fewer competitors. I have attached the sketch for 19, wouldn't it roughly work like that? I actually don’t think it’s a bad idea, driveway in the northeast, space in the west for a garden.

For 24, for example, you have to subtract the strip in the west, leaving only about 550m2. That is actually almost too little for me...
We also considered 10.
We had also considered 28, 34 is out of the question because there will be a rainwater retention basin underneath and then also directly the noisy main street....
Difficult to commit to 3 plots.

We initially estimated the house at 9x12, you should actually be able to get decent children's rooms out of that. Currently, we have a semi-detached house, the children's rooms here are about 10m2. If we end up with about 14 m2, that would be totally sufficient for us.

9 x 12 roughly equals 90 sqm living area on the ground floor, 3/4 of that for the single-story gives 67.
If you add a dormer, for example for the middle children's room, you would still have to reduce somewhat with regard to the roof pitch considering the height limit of 8 meters.
The bedroom and bathroom would have to be cut down so that you can still place the bed and toilet/bathtub.
..
If about 12 real sqm fall on each children's room, so that the floor area is about 14 sqm, then 31 sqm remain for stairs, hallway, bathroom, and parents. I consider that too tight. So everything is approximate.
Basically, you have to know the room program and then accommodate it. With an 8-meter height limit, you don't even have the option to convert the attic with a 9-meter width. That is too little.
With two stories, you have the same area upstairs as on the ground floor. Since you want to build with a basement, you have the area deficit of the utility room (HWR) on the ground floor, which you basically lack when you assign the rooms in the attic for the third child.
Therefore, you should actually look again whether you can really make it with 9 x 12.
The way you are doing it, I definitely consider it right: drawing on graph paper and working with templates. That way you can immediately see and correct the deficits.
Ps. I sketched this a bit for myself, but mentally slipped into the 11 meter length, so I might be a bit off when estimating;)

I personally would have no interest in the properties that include a private road as access. In this development area, there are 1-5 co-owners with whom you always have to agree regarding maintenance effort and repair costs.

Thank you for your input, so far we have only roughly written down what we want. Upstairs 3 children's rooms + bedroom + bathroom, possibly another children's bathroom. On the ground floor then an office. Utility room, another office etc. then in the basement. I had naively thought that roughly 9x12 would be enough. We wanted to go to the architect afterwards if we should get a plot of land. But then we will make a small feasibility sketch for ourselves. So far I have not found any standard house that has the required rooms upstairs and that without a high KS.