Floor plan optimization living area

Okay, I see that an isolated consideration of the OG without knowing the overall project is not productive. Therefore, here again is the full program:

Bebauungsplan/Einschränkungen
Size of the plot: approx. 620 sqm
Slope: yes
Site coverage ratio: 0.4
Floor area ratio: kp
Building window, building line and boundary: see pictures
Number of parking spaces: 3
Number of floors: 2 full floors, 1 basement
Roof shape: FD
Style: cubic
Orientation: southwest
Maximum heights/limits: see pictures
Further requirements: see pictures

Anforderungen der Bauherren
Style, roof shape, building type: flat roof, cubic
Basement, floors: basement with double garage
Number of persons, age: 2 adults, planning for 2 children
Room requirements on EG, OG: bedroom, 2 children’s rooms, office, living
Office: family use or home office?: home office
Overnight guests per year: the couch is enough...
Open or closed architecture: open
Conservative or modern construction: modern
Open kitchen, cooking island: semi-open
Number of dining seats: 6
Fireplace: yes
Balcony, roof terrace: see pictures
Garage, carport: double garage
Utility garden, greenhouse: possibly
Further wishes: use of the slope, living area in the DG, terrace facing south, minimizing earthworks

Hausentwurf
Who designed the plan: architect
What do you particularly like? Why?: living area in the DG as well as terrace/garden have a very nice view
What don’t you like? Why?: see original post
Price estimate according to architect/planner:

Shell	150,000
Finishing*	170,000
Excavation (approx. 800m3)	42,000
Roof (FD)	45,000
Outdoor facilities	52,000
Electrical, sanitary, heating	84,000
Additional costs*	90,000

In the items finishing and additional costs, I summarized a lot, otherwise it would get too granular.

Total costs around 630k

Best regards

The building will not be a KFW house, it will be solid built from Ytong (very quiet area), the parts of the basement and ground floor in contact with the ground will be made of waterproof concrete.

Personal price limit for the house, including equipment: approx. 650k plus kitchen, lighting and some new furniture.

Preferred heating technology: unclear. In the building application we once wrote heat pump, the cost estimate is based on that, but since the subsidy no longer exists (unless you build a KFW)... possibly it will simply be an inexpensive gas heating... I am open to suggestions. I want to have talks with the heating engineer soon. Currently a decentralized ventilation system is planned, I am considering whether a central one would be better?

If you have to do without anything, which details/finishes
- Floor-to-ceiling windows in the bedroom and office
- Masonry fireplace

Why has the design turned out as it is now?
Overall, we are very satisfied with the work of the architect. The slope and the cardinal directions were very well utilized. The OG and the terrace offer a wide and very beautiful view. We also like the driveway including space for garbage cans very much.

The approval procedure is already running.

As always, the question is whether the furniture dimensions are real...... in a few spots it feels tight. I would take a closer look at the stove, dining, and living room to see if that will work for you. The dressing room in the bedroom definitely seems too small; perhaps with 20sqm, one could create a room with a closet, maybe a bit of space can be taken from the two children's rooms, that would still be sufficient. In any case, an interesting floor plan.

I quite like the floor plan. One question - although I might be completely wrong: The 20cm floor structure is always missing in the average floor height, right? 2.6m room height + 0.2m concrete ceiling + 0.2m floor structure add up to 3.0m floor height.

It’s best if you first show the originals, before we have to piece together something from your words and, as you yourself already recognize, still somewhat awkward drawing skills.

The garage floor is shorter – so a partial basement?
In hillside locations the designation "EG" is usually rather confusing; on the other hand, a sectional view is extremely helpful for understanding.

see above. Exactly, the garage floor is shorter.

A few wall lengths would do the plans good ... so I have some doubts about the usability of the ground floor bathroom after the rearrangement ... and the kitchen/dining area situation also looks relatively tight.

The staircase situation when coming up from the basement looks quite narrow, when you run directly into a wall there.

You might also want to give the hallway area in the basement a bit more depth.

Thanks for the hint. The technical room can certainly be made a bit slimmer to enlarge the hallway a bit.

What do you mean by "coming up from the basement"? You simply walk towards the storage room on the ground floor; I hardly see any possibilities to improve that without shrinking the storage room.

As always, the question whether the furniture dimensions are real... In a few spots it feels tight. I would take a closer look at the stove, dining, and living room to see if that will really suit you.
The dressing room in the bedroom seems definitely too tight; maybe with 20 sqm one should create a room with a wardrobe, perhaps you can take a bit of space from the two children's rooms, that would still suffice well.
Definitely an interesting floor plan.

Exactly that is the problem ;-) especially the living and dining area cause us some concerns. As already mentioned in the opening post, we would preferably separate the dining area from the living area. The question is whether this can be cleverly integrated into the kitchen area. Possibly remove the kitchen island or maybe plan a smaller U-shaped kitchen with a peninsula.

I quite like the floor plan. One question – although I might be completely wrong here: In the section, isn’t the 20 cm floor structure always missing? 2.6 m ceiling height + 0.2 m concrete ceiling + 0.2 m floor structure would result in a 3.0 m story height.

In the story height, only one ceiling per floor is taken into account. The floor structure is not drawn in, so the room height later results from 2.6 m minus the floor structure.

And has the building application already been submitted? The structural analysis is attached then as well, right? Even if your shifts are possible, it will actually be tight in the kitchen. The table will also be in the way. Without having pencil and paper available now, I see possibilities either if the staircase is moved to the left side of the plan, which affects the lower floors, or stretching the kitchen upwards in the plan, pantry where the guest WC is currently, and moving the rest as well, so that the living area gives up some space. So a rotation counterclockwise.

Look here: with the chimney flue and the doors you have to compromise... and the WC window also additionally, something like that