Ideas for outdoor areas, garden, garden landscaping - suggestions, tips?

1) Insurable, no stormwater fee on it

if rainwater infiltrates on the property, is a stormwater fee still due? Connected surfaces (e.g. paving) are afterwards remeasured by the city?

You will need to prune [Thujen] at least annually.

Here, a rainwater fee is charged on all sealed surfaces. There is a rainwater sewer to the harbor down below, which is co-financed in this way.

Thuja also need to be trimmed. They are also not low-maintenance.

"Low-maintenance" always sounds so bad when associated with a garden. Everyone always wants to be out in the green and wants nature, but please not right at their own doorstep. Then paving is done, separated with double rod mesh fences, and a bit of cemetery tree is added. And then everyone wonders about insects and bee deaths.

Every garden needs care, whether with gravel (in my experience even more so) or with a cleverly designed planting.

I am always very happy when I hear that a change in thinking is taking place in cities and municipalities and that property owners are being encouraged through building regulations to implement certain plantings.
This also has to do with the heating up of inner cities and so on and so forth. Seeing and hearing how things are often planned with new constructions, this change was long overdue.
My opinion!

With you, the special feature of the wheelchair-accessible garden certainly comes into play. I didn’t know that. Still, such a garden can be designed close to nature!

The coneflower that you like is already a good start.

These rock garden haters piss me off, in various groups you can clearly see how narrow-minded they are.