Floor plan design for a single-family house with 165 sqm including a basement and light well

Hello everyone,
we are currently in the final stages of our plan and would like to show you our plan and ask what you think of it.
Bebauungsplan/Einschränkungen
Size of the property: 685sqm
Slope: 1.20m (north to south)
Floor area ratio: 0.4
Plot ratio: 0.6
Edge development: max. 9m
Otherwise development according to §34 Baugesetzbuch; in the neighborhood almost all house types, sizes, floors, roof types, etc. are represented.

Anforderungen der Bauherren
Style, roof shape, building type: single-family house, gable roof
Basement, floors: basement, 1 ½
Number of persons, age: 2 adults (and later maybe 2 children)
Space requirement on ground floor, upper floor: 164 sqm
Office: family use and home office
Guests sleeping per year: currently not necessary
Open or closed architecture: open
Conservative or modern construction: modern
Open kitchen, cooking island: open kitchen
Number of dining seats: 6
Fireplace: yes
Music/stereo wall: yes
Balcony, roof terrace: no
Garage, carport: double garage
Utility garden, greenhouse: utility garden
Other wishes/particularities/daily routine, gladly also reasons why this or that should or should not be: light well in front of the living room window for another office/bedroom in the basement.

Hausentwurf
Planning by:
- architect
What do you particularly like? Why?:

[*]There should be an open exposed roof truss
[*]Large living-dining-kitchen area
[*]Room sizes / room height with ground floor
[*]Pantry with window

What do you not like? Why?

[*]No separation between living room and dining room
[*]Coat rack in the hallway possible?
[*]Is the light in the master bedroom sufficient
[*]Are the stair step heights appropriate? 18.6cm/27cm
[*]Entrance area

Price estimate according to architect/planner: no price estimate received yet
Personal price limit for the house, including equipment: €450,000
Preferred heating technology: heat pump

If you have to give up, on which details/extensions
- you can give up: bay window, tiled stove, tilt-and-slide window
- you cannot give up: open roof truss, double garage, open living/dining area

Why did the design turn out the way it is now? For example
Standard design from the planner? Developed with the architect
Which corresponding wishes were implemented by the architect? The goal was to achieve a good sense of space and to build with as little corridor as possible. In addition, a light well is to be created under half of the living room so that enough light comes into the basement room. This room is then to be used as a home office.

Basically, we are wondering if a separation between dining and living room makes sense, or if it would then make the rooms too small again.
We are also not sure about the window in the kitchen; currently a window is planned with 2.26m width and a sill height of 1.40m. Not yet present in the plan.
Another question we ask ourselves is whether there is a solution for a terrace roof. Currently, we are thinking of a pergola.

The sketched image differs from the other plans in the west by the kitchen window and the dining room door. We are still unsure about the size of these two windows.

Best regards

Here is the [geränderte Bild] still.

Space requirement on the ground floor, upper floor: 164 sqm

Basement,

Personal price limit for the house, incl. equipment: €450,000

Find the mistake!


I am not a floor plan expert, but a real estate financier and companion of builders and project developers.
Basement: costs around 140 sqm probably €150,000 + X
Living area: 164 sqm at maybe €3,000/sqm is then another €500,000
Double garage: €35,000-50,000
Additional building costs: let's estimate €50,000
Total: +/- €750,000 plus terrace, special requests, garden, driveway, outdoor facilities

I hope your budget fits your wishes. How can the architect plan such a huge house with such a price limit from you?

That was not an architect, that was more like a planner from a construction company..

The window line is not acceptable at all.

That was not an architect, that was more like a planner from a construction company.. The window line is not acceptable at all.

Which window line do you mean?

Find the mistake!

I'm not a floor plan expert, but rather a real estate financier and companion to developers and project planners. Basement: costs around €150K + X for about 140 sqm Living area: 164 sqm at maybe €3,000/sqm is another €500K Double garage: €35-50K Additional construction costs: let's estimate €50K Total: +/- €750K plus terrace, special requests, garden, driveway, outdoor facilities

I hope your budget matches your wishes. How can the architect plan such a huge house for you with such a price limit?

Hey,

I currently don’t have any offers yet. So you’re a bit ahead of me there. Basically, I want to do a lot myself and of course also help with the construction companies, if they allow/want it. Additionally, I don’t want to build either a KFW40+ house or a passive house.

Where do you think I can save the most money? Apart from sqm and basement.