Prioritizing horticulture. Do you want to have the entire garden planned?

Dafuq? 1000€/m^2? With our not really huge plot, we would end up at an estimated 400,000-500,000 € (depending on what counts as the outdoor facilities areas). For the outdoor facilities alone.

Yep, he set me too. For us, almost nothing works without an excavator, retaining wall, earthworks, and so on. We are also below. Nevertheless, it will be six figures for about 1000 sqm. However, it should also provide reference values for other regions or flat plots. A small outdoor area simply costs less than a large one.

Yes, but with (presumably low) six figures for 1000 sqm you are not just below, but an entire order of magnitude below (otherwise you would be at around one million). This rule of thumb is absurd.

She is too. That is ten times the cost of average paving all-in.

We are well below. However, for us the expensive part is the existing stock. The retaining wall made of sandstone is good. No slope retaining, no new retaining wall nearly 3 meters high, no foundations that have to be broken up from below with a jackhammer. The existing stock of plants can be retained. Without the existing stock, the property would not have been financially developable for us.

At least with properties like ours, there must be something in the scale if two say it independently of each other.

We are both not gardeners and also people with two left hands.

If you want it to be done, then that's no problem. No desire is okay, but two left hands in gardening? No... anyone can do that.