Single-family house ~200 sqm with double garage on a trapezoidal plot

Hello dear house-building forum community!

After diligently following along, I am now happy to present our current design for constructive criticism.
Below are the usual details, south is bottom of the plan in the site plan:

Development Plan/Restrictions
Plot size | 512 sqm
Slope | No
Floor area ratio | 160 sqm floor area for main building possible (+140 sqm exceedance for others)
Number of parking spaces | min. 1.5
Roof type | SD / WD or similar (mansard roofs present in the area)
Maximum heights/limits | FH 9.4 m | WH 6.5 m
Additional requirements | Setback areas of 0.4H on two sides, otherwise 0.8H

Client Requirements
Style, roof shape, building type | classic mansard-hip roof, rather somewhat modernly interpreted
Basement, floors | Ground floor, upper floor, attic + basement
Number of people, age | 2 (30y, 33y) + 1 (0y) + x
Space requirement on ground and upper floor | approx. 80-90 sqm each for ground and upper floor
Office | 1 office necessary for home office
Guest sleepers per year | tbd, partly also longer visits
Open or closed architecture | rather open, but with appropriate sound insulation and privacy
Conservative or modern building style | rather modern
Open kitchen, kitchen island | large open kitchen with island important
Number of dining seats | 4-6 constantly available, with possibility to extend
Fireplace | yes
Music/stereo wall | no, free HiFi system
Balcony, roof terrace | no
Garage, carport | double garage
Utility garden, greenhouse | garden with beds and 2-3 trees, enclosure with hedge

House Design
Who designed it: architect & own ideas/drawings
What do you particularly like? Why? Own parents’ floor, spacious open area, straight staircase, number of rooms upstairs (flexibility), sufficient coat storage space, staircase separated from living room
What do you not like? Why? Placement options for heat pump outdoor unit, attic possibly with a bit too much space that cannot be used sensibly (slopes)
Price estimate by architect/planner: none made so far
Price limit house, incl. equipment | 1.4-1.5 million
Preferred heating technology: air-to-water heat pump

If you have to give up on which details/extensions
-you can give up: fireplace, pool, possibly double garage
-you cannot give up: as “large” a garden as possible

Why is the design the way it is now? E.g.
A mix of own ideas/concepts and architect’s input as well as some “improvement loops” over the last weeks. The predominant principle here is the attempt to retain as much contiguous garden area as possible on a rather small plot. Therefore planned with a setback on the east to comply with setback areas on the trapezoidal plot. 3 floors + basement are intended to keep the house’s footprint as small as possible and separate the “parents’ area” somewhat from the children/guest area. We see our wishes well implemented in the current floor plan. Minor details, e.g. concerning window sizes, we still want to adjust (e.g. windows of equal size on the upper floor west, possibly a slightly larger sliding door on the ground floor, …)

What is the most important/basic question about the floor plan summarized in 130 characters?
Do you see potential improvements we should consider or even no-gos we should rethink? We are quite satisfied with the current status but appreciate input on topics we may have overlooked or “talked ourselves into” so far.

Ground floor
[ATTACH alt="EG.JPG"]79832[/ATTACH]

Upper floor
[ATTACH alt="OG.JPG"]79833[/ATTACH]

Attic
[ATTACH alt="DG.JPG"]79834[/ATTACH]

Basement
[ATTACH alt="KG.JPG"]79835[/ATTACH]

Cross section
[ATTACH alt="Schnitt.JPG"]79836[/ATTACH]

South view
[ATTACH alt="Ansicht Süd.JPG"]79837[/ATTACH]

East view
[ATTACH alt="Ansicht Ost.JPG"]79838[/ATTACH]

West view
[ATTACH alt="Ansicht West.JPG"]79839[/ATTACH]

Do you see any improvement potentials that we should consider or even no-gos that we should reconsider?

I won't say anything about the floor plan, others have a better overview of that. But this roof shape - nowadays it's really a no-go, almost no photovoltaics fit on it.

I won't say anything about the floor plan, others have a better overview.

Nice that you're here again!

But this roof shape - nowadays it’s really a no-go, hardly any photovoltaics fit on it.

Finally a mansard roof - and in both dimensions too! The fact that it has become rare is more due to its practical eradication by thoughtless development plans. In principle, this roof shape is actually the best optimizable for photovoltaics.

Price estimate according to architect/planner: none made so far

However, you should really do that… that’s already quite something: the mansard roof also counts as a full expansion of the tight 80 sqm.

Price limit house, incl. equipment: 1.4-1.5m

Oh, I’m just reading that now. Well, then :)

Space requirement on the ground floor, upper floor | approx. 80-90 sqm each for ground floor and upper floor

the attempt to have as much contiguous garden space as possible on a rather small plot.

Keep in mind that your huge driveway will also restrict the garden.

No-gos we should reconsider?

Well… one might like the roof. But it fits the coffee grinder villa. I wouldn’t call it modern. No-gos for me would be the guest toilet behind the wardrobe, the bathtub in the master rather than the children’s area, a shower door in the kids’ bathroom (who’s going to clean that?), and somehow a major planning mistake: the missing height in one corner of the bedroom (lower left corner of the bed and sloping roof). A man 1.90 m tall already has to hunch there to get through without banging his head.

I find the roof shape particularly unusual and because of photovoltaics, one could also consider having the photovoltaics executed basically as "roof tiles." No budget was mentioned ;) ... just discovered it ... so ok probably.

I like the floor plan. Only with the kitchen I would plan concretely, the broken wall to the hallway should be well thought out. And, I would save the air space and rather enable a washing machine/dryer on the "children/guest floor."

I see the bedroom bed edge like Yvonne, but I would probably just rotate the bed 90° and place the headboard against the wall on the right side of the plan.

I don’t find having a bathtub only in the large bathroom bad, because the bathroom is accessed via the hallway. The shower door in the children's bathroom can just as well be a shower curtain, otherwise just a shower door. The phase children and bathtub is not always particularly long and especially in the first years not possible without the presence of a parent anyway.

There is just a lot of space ... is there that much hobby for so much basement?

I see the bedroom bed edge the same way as Yvonne, but I would probably just turn the bed 90° and place the headboard against the right wall.

It is now 2.54 meters... the other side can only be guessed. I think almost the same?