Yes, I have to research that. I didn't know about it. I thought it was only important that the branches don't grow over to the neighbor. Although I like it with my right neighbors because I get something from their planting and don't have to pay for everything myself. :) Also, they said I may harvest what grows over.
Simply put, the higher the trees, the further away they need to be. As long as you agree with the neighbors, no one will care. But be sure to plan a desired and maximum height for all trees and hedges. Choose plants that stay within the desired size or can be maintained at that size. In the past, far too many large-growing trees were planted too close to houses.
With pavilions, I would hesitate to park my car underneath in winter. You definitely need something that can bear proper snow load. And even though a pavilion with proper guying can withstand much more wind than you might expect... at home, such a thing stands all year round, even during storms. So rather take a carport. Or leave the roofing off completely.
I also think a proper seating area directly at the kitchen/dining area is missing. For a party, it's totally unsuitable and also inconvenient for normal visitors. I would reverse the seating arrangements. Main seating area right at the house, second place for a smaller group without food in a corner. You can also look at the green if you design something nice directly next to the terrace.
In general, I still miss the concept. Do you want to close off the property or keep it open? What about the field? How do you want to integrate it? Do you want a purely ornamental garden or also a utility garden? Do you want it natural or more like the type at the Federal Garden Show? Are there plants you absolutely want to have and do they have special requirements (e.g. full sun, wind protection, climbing aids, etc.)? How much time do you want to invest in the garden?
Where do you store garden tools and how many do you need? If you choose a carport, that's also important: what about the bicycles? Tool room or garden shed?
Regarding compost, I have already shared my opinion, but I’m happy to do so again. The thing is for a balcony, not for a garden. At first, it will probably be enough, but soon you will fill it up just with grass clippings. Even in large models. What will you do with leaves when they accumulate in larger quantities in a few years?
So rather plan a suitable place for it now and don’t make it too small. 2 chambers of 1 cubic meter each is the right size, plus maybe something for green waste if you have more than 3 trees.
I wouldn’t simply follow the development plan here but rather start planning. For us, the garden will automatically exceed the requirements many times, which then also gives me the possibility to deviate from the requirements. (For example, the development plan requires fruit trees to be standard stem. But those are actually way too big for a home garden and too productive in the medium term. Accordingly, I want to focus on smaller growth forms. Does your plan say anything about that?)