Floor plan of a single-family house (approx. 170 sqm) with garage - hillside location

Hello dear forum,

what do the professionals say about the following floor plan (especially regarding the questions described below)? Does anything catch your eye that should definitely not be done?

Thank you in advance

Development plan/restrictions
Plot size: 800 sqm
Slope: yes
Site coverage ratio
Floor space index
Construction window, building line and boundary
Edge development: see attachment
Number of parking spaces: garage for 2
Number of floors: 2 (ground floor and upper floor without basement)
Roof shape: flat roof with ventilation
Architectural style
Orientation: see attachment
Maximum heights/limits
Further specifications: none

Clients' requirements
Architectural style, roof shape, building type
Basement, floors: no basement, 2
Number of persons, age: 2 (36+34)
Room requirements on ground floor, upper floor: GF 90; UF 80
Office: family use (office + guest room)
Guests per year sleeping over: 10
Open or closed architecture: open
Conservative or modern construction: modern
Open kitchen, cooking island: open
Number of dining seats: 6-8
Fireplace: yes
Music/stereo wall: no
Balcony, roof terrace: balcony
Garage, carport: garage
Utility garden, greenhouse: no
Other: sauna

House design
Who planned it: DIY + architect
What do you particularly like? Why?: open living area with fireplace/sauna integration
What do you not like? Why?: ground floor is too conservative; rooms in a row
Price estimate according to planner: 300K
Personal price limit for the house, including equipment: 360K
Preferred heating technology: gas condensing boiler with solar thermal

If you have to do without, which details/extensions
- Can you do without: fireplace
- Cannot do without:

What is the most important/basic question about the floor plan summarized in 130 characters?

Due to the slope of the plot, it is not really possible to build a terrace with a view. Therefore, the living area was moved to the upper floor and for summer we thought we’d just sit on the balcony. As the balcony is drawn, however, we think it is too small. Does it perhaps make sense to use the ceiling of the garage as the balcony? (a rough 3D draft is attached)

The original design provided for the heating/technical room to be located in the garage. Due to the topics of edge development and additional insulation for this room, it was moved to the ground floor. Therefore, a bathroom had to be moved up to the upper floor. A storage room had to give way for this on the upper floor. We fear that we will have overall too little storage space. Do you see it the same way?

Note: As we are still in the planning phase, I do not have all views up to date. At the very beginning, we had a staggered upper floor compared to the ground floor. Also, the garage was not placed directly on the plot. I have attached the views anyway to show the orientation. The satellite photo still shows the old status.

Are you planning for 2 people or for 4?

So for 3 people. 2 adults and 1 child. The room "Kind 2" is my wife's hobby room. Between the rooms "Kind 1" and "Kind 2" there should be a drywall partition so that the children's room can be enlarged if needed.

Storage room is definitely missing. The hallway on the ground floor is too large. Long corridor. The entire ground floor feels cramped.

The dressing room needs a lot of space for relatively little storage. If you integrate the closet into the bedroom, you have about 50 to 75 cm of space without loss, and child 1 or child 2 would be larger.
I would remove the second door from the bathroom.

Have you ever thought about moving the house entrance to a different location?

The problem is that the wall between Child2 and the parents is a load-bearing wall and the wall upstairs above has to stand on it. But you are right that the dressing room might be a bit much.

Maybe the corridor could end right after the stairs and create a separate area... either separate it with a door or just install a door frame or something similar so that the tunnel effect disappears. The second door in the bathroom could then disappear.

Regarding the storage room... maybe it could be built upstairs between the living and dining rooms? Just one meter wide for vacuum cleaners, etc.?

And honestly, I haven't thought about the front door yet. Do you mean move it more downwards or shift it more to the right when standing in front of it?

You have 16 sqm of hallway where you can only move cramped.
That has to go.
Just don't know how yet.

Somehow the staircase and entrance need to be closer together.

I wouldn't plan a storage room there. That would diminish the effect of the upper floor.

Considering only the upper floor, I would move the staircase towards the southwest, with a storage room accessible from the kitchen behind it.
I would completely overhaul the ground floor.

Are the costs for earthworks, retaining walls, and the long driveway also included in the 300,000 euros? If so, how much work do you want to do yourselves?

Our first plans had the house rectangular, then it became square.

Our living rooms are downstairs and the bedrooms upstairs.