Floor plan single-family house, 2 full floors approx. 180 sqm, 600 sqm plot

What are botched mortar joints?

You should know this by now (even if it does not concern you in the "prefab" house), because I have already pointed it out repeatedly: they are mortar fillings in the joint gaps of the masonry where they do not belong at all with plan bricks, and originally caused by design ignorance of the brick dimensions. Moreover, they are not only building physics problem areas but regularly also a danger to proper overlapping dimensions of the bricks in their "surroundings."

Simply put: when bricks do not fit optimally during house construction.

No. (no further words / symbols)

The base purlin is planned on the ceiling according to the current plan… it can also be moved inward and thereby the whole roof sinks lower.

Thisisnotaseriousproposal: You want a room height of 245 in the ground floor and upper floor, neutral in overall height, to change it so that by increasing the ground floor by 12.5 cm you then cut a corner off the rooms in the upper floor cross-section and give them knee walls 232.5 instead of full-height straight walls at the eaves??? – that would be an optical and technical joke in the form of a practical joke! – (incidentally, I also see no reason for an increase of exactly 12.5 cm here, apart from an optimization of stone cutting – or do you want to mix in 2DF here?).

for an increase of 12.5 cm in the ground floor, then in the upper floor cut off a corner of the rooms in the cross-section and give them a knee wall 232.5 instead of full-height straight walls on the eaves sides???

You misunderstood me.
The upper floor will not become lower because of this, only the attic! And that should be unproblematic.
And that is possible without technical or visual problems.

The upper floor does not become lower because of that, only the attic!

If you pull the cap over the face of the upper floor, it becomes the lower attic – how else?

Should the garage really stay there? So far back on the property and therefore so far away from the street?

Our neighbors have it, and I hear him curse every winter morning when he has to shovel out the driveway first before he can get out of the garage. I would reconsider. At least a bit closer to the street, if necessary, plan the garage overall longer and include two or three meters as a shed, which can then stay there because the access is from the garden. Is a roof planned from the house to the garage, a kind of carport between house and garage? If you put that over the entrance, you have a protected entrance. That would be personally comfortable for me.

Overall, plan the garage more towards the street side. If it is not a prefabricated garage, just extend the thing by 2.5 - 3 meters. The car stands in front, the shed is at the back. You can separate it with a wall but you don’t have to. On the back wall, a door to the garden and suddenly the lawnmower and co. have a home. In the extended carport, four bikes (and previously as many scooters, Bobby cars, Ketcars etc.) can find their dry place. I would in any case roof the space between the house and garage and thus gain another covered parking space and a covered entrance.

The idea from ypg with the bedroom is great. In addition, I would probably put a utility room with a washing machine upstairs with cabinets for bedding and such, and a storage area down to the technical room. You could also integrate the space under the stairs into the technical room. It’s then much easier to access.

We have a laundry chute from the bathroom to the technical room, therefore the washing machine is downstairs. Most likely a cabinet in the dressing room will be used for bedding and such. There is enough space there. The access from the technical room to the space under the stairs is brilliant, I don’t know why I hadn’t thought of that myself. Will be implemented right away! :)

What I don’t like is the whole window situation in the kitchen and dining-living area. We have a very similar layout for these rooms but a lot more windows. Both in the living-dining room and in the kitchen. There we placed the tall cabinets on the inner wall to leave the outer wall free for access to a second terrace. I love the abundance of light in every season. And with you, that would be the west side, so the ideal spot for an evening terrace right outside the kitchen!

I’m not entirely happy here yet either, but my wife is. She says she has enough light and so far we only have one window in the kitchen... I somehow lack the idea of how to implement it. We gave up on a separate pantry (originally planned at the upper part of the kitchen behind a front) and therefore planned the pantry on the right side behind the sliding wall. So naturally no kitchen line can be planned there. My wife prefers a view of the garden and wants rather fewer and smaller windows. Someone always has to clean them... *g* I really like your kitchen, of course! The terrace is planned in front of the dining area and possibly also a part south of the house so that it can be easily reached from the office as well.

I would only do this angular arch in drywall, maybe only after laying the floor? Then it can be removed if it no longer pleases. However, it already zones the space nicely. We have two small walls like that between kitchen and dining as well, but forced by necessity because we hid pipes there and needed a support for the load-bearing upper floor wall. I quite like it. Maybe someday I’ll install a thick glass door in loft style there.

Maybe the angular arch will be removed after all and replaced with the dish cabinet; I also really like ypg’s idea...

You should have known that long ago (even if it does not concern you in the "Fertig" house), because I have already pointed it out repeatedly: these are mortar fillings in the butt joints of the masonry, where they do not belong at all with planar stones, and originally caused by planning ignorance of the stone dimensions. Moreover, they are not only building physics problem areas, but regularly also a danger to correct overlap dimensions of the stones in their "environment".

Thank you for the hint, I will definitely bring it up again with the general contractor. Maybe the building expert can also take a closer look at it. I actually know little about masonry, and I had not read about it in the forum before.