Floor plan design for a single-family house with a conservatory and plot selection

Would also get input without a property. Just drive to the nearest model home park. Look at the houses. It gives you a feeling for room sizes and you have the first basis for discussion liked - didn’t like. Some salespeople/advisors take their time and give you input, e.g. that they adjust a model home to you. Not everyone does that. Some also hold a 15-minute monologue about how great they are and how bad the competitors are.

Better not to take a corner plot because you have to clear too much path in winter. I would take a plot directly opposite yours: access from the NW, garden in the SE, terrace then SE cornering to SW. So one of the three with 30 meters length. If the sun still comes through in the evening, you can nicely sit on the side of the house on the west side or enjoy the evening sun in the yard, possibly a party under the carport ;)

:
All plots are still available because they are currently not for sale. Only the white plots on the right are gone and have been/are being built with single-family houses.

I have renumbered all relevant plots and provided the approximate area. Note that all size indications are only approximate, as I measured them from a pixelated draft. You can still see the blue building windows through slightly.

I have renumbered all the relevant plots

So if they are all equivalent (not some rows only semi-detached houses or only flat roofs or the like), then my favorites would be numbers 6, 11 to 13, and 23 to 25. If you weigh Yvonne's clearing duty argument heavily, then specifically 12 and 24 - however, they would have more fence neighbors for fewer square meters to sweep.

Better not to take a corner plot because you have too much area to clear of snow in winter.

That was always my thought as well as my wife's. Certainly justified, but it doesn't necessarily mean that a sidewalk has to run everywhere, then it becomes less of an issue.

An advantage of a corner plot with the right orientation can be the topic of setback requirements, since you often can use the public space up to the middle of the street, i.e. you may be a bit more flexible or have more of the property, in case it is rather small.

Regarding the issue of with/without land for the architect. We didn't do it, but I can only recommend doing so. Sometimes (often) a plot that looks difficult to a layperson allows more creative freedom and more exciting properties than the one that looks perfect to laymen.

The only difficulty might be finding an architect in the current building boom who will take action without a specific plot...

On the topic of with/without land to the architect. We didn’t do it, but I can only recommend doing it. Sometimes (often) a plot of land that looks difficult to laymen offers more design freedom and more exciting projects than the plot that appears perfect to laymen.

Does that mean you let a princess slip away because she looked like Cinderella to laymen?