Floor plan corner bungalow 150m² with expansion possibilities

As marked, the terrace would be right on the boundary. That’s nonsense and who would want to sit right next to the neighbor’s fence?

Before you brought up this thought here, I hadn’t given a second of thought to the possibility that there could be a problem. It would be important to me that the main terraces are not immediately next to each other (like in a row house) for privacy reasons. But why not by the fence if there is a flower bed or lawn on the other side?

First of all, the terrace must also comply with the 3m minimum distance (in most federal states). On your sketch, it is impossible to see how much space there actually is. No measurements. So, apart from the fact that I wouldn’t want to sit by the fence because the neighbor is constantly looking at my coffee cup there and exposed to my conversations, the first question is whether there is even enough space?

Basically, I don’t think the idea of the angled bungalow is so bad if you want and have to shield yourself from the street. Is it that heavily trafficked? If yes, the consequence for me would be to plan the terrace in the angle – there is one there anyway, but please not through the utility room and if so, then as the main terrace. As a bungalow, you’re not so high that the shadowing goes on endlessly. Also, the house as a whole could possibly be moved further downwards in the plan, so as not to divide the garden so much. On the other hand, if the street is not so bad, a south-facing terrace as an additional space would be attractive. Then it looks different again. What does that tell us? Too little information... ;)

On the other side there is only a large garden area with lawn and trees, the neighboring house is further south. You can see the whole thing here in another thread of mine:

The street is not very busy, the only cars here belong to the other neighbors. But unfortunately, there are also neighbors who spend their time driving up and down the street staring at everything... so it is very quiet here, but I don't want to be watched :D I am concerned about the shadow cast by house no. 15 if I were to build further forward towards the street. There is a garage with 2 outbuildings and the residential house about 8m high, they block a lot of the sun from the west.

Basically, I don't think the idea of the corner bungalow is so bad if you want and have to shield yourself from the street.

But unfortunately there are neighbors here who spend their time driving along the street and gawking at everything...

Neighbors can be trained or ignored, and a corner floor plan can also be turned the wrong way (then it may act as a wind-catching wing, which can be influenced by planting).

I had already considered the straight hallway, but I felt it was way too long until you finally reached the living area.

And then you'd rather make a winding hallway? And you want every mail carrier and visitor to stand on your south terrace? A privacy screen only helps once you’ve actually arrived right in front of the front door. Only then is the direct view blocked. Where do you want to park? I would park in the east and enter the house from the east. I really like the angled bungalow because you can realize a rather narrow living room with south and north windows at the same time. South windows for lots of light and sun, north windows for the nice view. Or is that no longer so important to you? Because in your plan you only provided for a kitchen window there and open the living space to the south. In any case, I would never put the terrace to the west, even if the neighbor only has his garden there. Imagine people sitting and chatting by your fence every day and staring into your garden. You have a 1,500 sqm plot, so I’d keep some distance? Just look at what a wonderful large south garden you have, which you can screen off from the eastern entrance and the street through planting:

Wouldn't that be enough? As an open staircase, there is still enough air in the hallway

And the statics must also be planned that way beforehand, I know that already :)

80 for the staircase? Including the railing, I would at least plan for 100. Then the hallway as RBM with 180, leaving RBM 80, with plaster 75 (or so). That's not nice. You could then bump your head on the stair stringer coming out of the office door. Ok, the office door could be moved. (Everything can be moved... many walls need to be moved ;) )
Then the offset of the hallway: it's narrower on the left than on the right. Such things are arbitrarily planned and not nice when you live and experience these corners. Nice lines of sight look different.
The roof would probably have to have a steeper pitch in this position. Ideally, the staircase should come out at a height of 2.50 at the top.
The legs of the house's footprint should be planned so well that one leg in the attic can be developed with 2 children's rooms and a shower bathroom. Possibly you open the other leg into the roof so that the living area is open to above.
North terrace and the view: I would rather expect a living room with a big lounging corner, a nice armchair seating area or something like that with panoramic glass so that you can also look directly INTO the garden and not only find a small kitchen window with a barrier.
“Built-in” technical room is also such a thing: the routing of the lines. But the topic was touched on, only unfortunately the points that a prospective builder should revise here are not addressed.
You want Japanese elements? In what way?

Just finish and round off the basics (measure the property with the drawing of the important elements) and post that.
And: now switching from one thread to another because there also seem to be other infos there (property 15?), that's really a bit too much of a barrier for us responders on mobile.