ᐅ Floor plan design for a single-family house with a ventilation system and double garage

Development Plan / Restrictions
Plot size – 1493 m² (0.37 acres)
Slope – no
Plot ratio (floor area ratio) – 0.4
Floor space index – 0.8
Building limits, building line and boundary – detached, semi-detached houses allowed, according to Bavarian building regulations
Edge development – no
Number of parking spaces – 2 in double garage
Number of floors – 2 full stories
Roof type – staggered shed roof, pitch 15°
Architectural style – modern?
Orientation – northwest
Maximum heights/limits – unknown
Other requirements: Everything permitted according to development plan

The development plan is not yet public, so I will not provide an image of the position within the development plan. However, our plot is shown in green on the Google Earth image.

Homeowners’ Requirements
Style, roof type, building type
Basement, floors – 2 floors without basement
Number of occupants, age – 2 adults about 30 years old, 1 child 1 year old
Space requirements ground floor, upper floor – not defined
Office: family use or home office? – no
Guests per year – unimportant?
Open or closed architecture – closed
Conservative or modern construction – modern
Open kitchen, kitchen island – yes, possibly
Number of dining seats – 8
Fireplace – no, but flue should be prepared
Music/stereo wall – possibly
Balcony, roof terrace – only terrace at ground level
Garage, carport – large double garage
Utility garden, greenhouse – no

House Design
Planner:
- Do-it-yourself with a friend as technical draftsman
What do you especially like? Why? Custom floor plan, passage from garage into house (dry entry, storing groceries in pantry)
What do you not like? Why? Currently satisfied
Estimated cost according to architect/planner: €380 per m³ (cubic meter) of enclosed volume = approx. €275,000 without garage
Personal budget limit for house including equipment: €350,000 including garage
Preferred heating system: heat pump (horizontal loop collector), photovoltaic, controlled mechanical ventilation, KNX, possibly alarm system

If you have to give up something, which details/upgrades
- can you forego: no thoughts yet
- cannot forego:

Why is the design as it is now?
Own design based on many examples and personal ideas.

What is the most important/basic question about the floor plan in 130 characters?
Do we have major planning errors, useless layouts, construction flaws, etc.? We want to avoid mistakes or problems that cannot be corrected later.

Thanks for your opinions
Regards
Marco

ZeroDown schrieb:
Do we have major design errors, impractical layouts, structural flaws, etc.?

Both yes and no. This is already a much less clumsy design than many homebuilders start their threads with here. The plan is solid, and there are no major mistakes in the dimensions. The utility and drainage planning are not the favorite topics of this draftsman. I find the mechanical room and the adjacent laundry/pantry somewhat generously sized overall, and I would boldly suggest that the mechanical room could be integrated there. I would prefer a larger open area between the kitchen and dining area in the living room. On my list of flaws, the guest room is in first place, followed by the second children’s bedroom.

One thing I like is the corner in the floor plan where the two roof planes meet — I miss that on the other side. I also give a plus for the ribbon window; offset shed roofs with a blind gable strike me as odd. Try sketching the outlines on an aerial photo and add a north arrow to the floor plans.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

Thanks first of all— I was expecting worse!

11ant schrieb:
... Utility and drainage planning are not this draftsman's favorite topics....

I have to supervise that closely; if the requirement for where to drain the property is not yet clear, it would be unnecessary or duplicate work. I still need to clarify this with the municipality once the development plan is official.

11ant schrieb:
I find the technical room and the adjoining utility/laundry room and pantry collectively a bit generously sized, and I would boldly suggest that the technical room could be integrated there.

Well, that partly grew out of my wife's wishes. Quote: "If I don't get a basement, then I need a large utility room." So we tried to design it as large as possible here, including a pantry accessible from both the garage and kitchen.
Honestly, I was a bit concerned about the "appearance" of this room once I integrate the water meter, electrical panel, telephone, heating, hot water tank, controlled ventilation system, so we added the "small room" attached to the garage/house.

11ant schrieb:
I would have preferred more open space (dance floor) between the kitchen and dining area in the living room.

Yes, good point! We planned generously here because we also want to set up a second large table for parties.

11ant schrieb:
My top issue on the list is the guest room

Because of the room layout? If so, I agree, it also bothers me, but I haven’t found a good solution yet. Besides, it will likely be used 98% as a storage room since we don’t have a basement.

11ant schrieb:
... Second place goes to the second children's bedroom.

Why, because of the two doors? We eliminated that—he didn’t know where to position them, so we chose the upper door and removed the left one.

11ant schrieb:
I like the corner on one side of the floor plan where the two roof planes meet—I miss that on the other side.

Thanks, that’s what I wanted, so the house doesn’t look too bulky at first glance. I had it in the original version at the back of the house (garage), but it was removed... I might rethink that!

11ant schrieb:
I give a plus point for the strip window; offset shed roofs with blind gables seem odd to me.

Thanks, originally it was planned without windows there, but I think this is better for lighting.

11ant schrieb:
Draw the outlines on the aerial map and add a north arrow to the floor plans.

I’ll provide that once we meet again.

Another point:
We want to enhance the children’s bedrooms a bit: Both the adjacent bedrooms and the guest room will have a ceiling, but the children’s rooms will be left open. This way, we want to create a "small" play paradise. The ceiling height will be low, but we’ll see how it turns out. There will also be natural light through the two windows up there. Access will be by ladder with a railing.

Drainage: I meant that the downpipes of the main bathroom run through the hallway, and the children’s bathroom could be located closer above the kitchen, among other things.

In the guest room, you couldn’t even rotate the bed 90 degrees—it’s such an unfriendly layout for furnishing. Also, the access situation in the second children’s bedroom could be improved.

Many adjustments will still be made to your plan, so these are partly details that would be refined in further drafts. I didn’t even criticize small issues for two reasons: first, they might already be resolved in later versions, and second, they are minor flaws that are hardly noticeable.

This is just initial feedback from me; there will surely be more contributions with very different perspectives.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

This was the first draft with the offset at the back as well, but then the guest room looks even worse.

Additionally, we want a roof over the front door, probably made of concrete, which is also missing in this design.

Here with north arrow

Where exactly does the exterior wall of the third gable rest in the attic?