ᐅ Single-family home floor plan, approximately 145 sqm, west-facing driveway

Murmele305 schrieb:

Unfortunately, the EH40+ standard is mandatory for our plot due to our application.

My condolences. Some politicians seem to believe that going too far equals progress. Being avant-garde should be a choice, and environmental considerations should not be misused to keep average earners away from homeownership.

Murmele305 schrieb:

Why should an exposed rafter roof structure be considered a cost-saving measure?

If misunderstanding is not your motivation, I’m glad to hear that. It is indeed a common misconception that a detached villa can be built more cheaply with a gable roof.

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Murmele305 schrieb:

Regarding the TV, one will also be set up in the living room. We’ll try to experiment a bit with some furniture planning software. Are there any you would recommend?

I would actually recommend pencil and graph paper, maybe along with prepared cutouts in the size of the furniture pieces. We have sometimes assembled different "scenarios" at home with the heights and so on, using whatever was available. I can live with almost anything but try to avoid making careless mistakes that would bother me permanently. Maybe you could also visit a furniture store and figure out (regardless of brand) which furniture layout you want to live with in the living room. I like your explanation of your personal lifestyle (not because I want the same), because it clearly reflects your own way of living rather than what others do elsewhere.

Murmele305 schrieb:

With the subsidy, there would be about a €130,000 difference if you calculate with an interest rate fix of 3% over 30 years.

So you save €130,000 thanks to this subsidy?

Murmele305 schrieb:

By hobby I meant the video game and home cinema room. That takes a lot of space, and we mostly already own the equipment. It has always been my wish to accommodate something like that in my house.

Then I would plan that space now so that it comes as close as possible to your original wish. If you spend that much money on this hobby, it should be planned as well as possible (distances, seating position, toilet, water connection for a small bar, acoustics, or similar).

Murmele305 schrieb:

The office was just an idea since I occasionally work from home remotely. However, an office is not really necessary here.

For such occasional cases, I wouldn’t plan a separate room. It can probably work in the TV room, an unused children’s room, or the living area.

Murmele305 schrieb:

The fireplace should be used in winter or late autumn.

I figured that the summer is less relevant. Still, I recommend that you carefully and critically review how and under what conditions you’ll use it, because quite a few people, myself included, consider this a somewhat contradictory approach. Recently, @motorradsilke advocated for it and explained her personal usage here understandably and in detail, which I always appreciate. But this also shows that you need to consider the interaction with underfloor heating and clarify whether that combination works for you.

Murmele305 schrieb:

We wanted a double garage because we have two cars and both start work early. Also, we get a lot of snow in winter since we live in the Allgäu region.

I understand that, although for cost reasons I usually prefer a carport. I meant the driveway width, which I read was 5 meters (about 16 feet). Apparently your budget isn’t too tight, because otherwise I would fear that interior quality and comfort—the important living areas—might suffer if you spend generously elsewhere upfront. That would be a shame, because personally I like to experience comfort directly and close by, and I am reluctant to spend unnecessary money on garage, fencing, and so on.

Murmele305 schrieb:

Good to know about the purlin.

Of course, that’s not universally applicable. I can only tell you how it is here and it does not cause any visual disadvantage for us.

Murmele305 schrieb:

Good tip about the seat depth. We’ll discuss that again if there’s going to be a window seat.

Just to be clear: I wrote "seat height," meaning measured from the floor. A "seat depth" obviously is also necessary for such a desired window seat, and that’s exactly the challenge, as it protrudes into the room.

Murmele305 schrieb:

We’ve already tried a few layouts for the upper floor. However, we haven’t managed to create a well-organized layout that we like. Then the idea of the mini hallway came up.

I would do it like this:

Whether to arrange the bathroom without the T-shape is up for debate.

Murmele305 schrieb:

Regarding the depth of the window sill, shouldn’t it be about 60cm (24 inches) deep to really sit on it comfortably?

Here is an older picture, please ignore the decorations as there were still some things left over from winter. The window sill is 3m (9 ft 10 in) wide, 40cm (16 inches) high, and 30cm (12 inches) deep.

Murmele305 schrieb:

Good to know about the purlin.

If this is what you meant, this is how it looks in our case.

About the double garage:
If you don’t drive classic cars, convertibles, or other collector’s vehicles, a garage isn’t necessary for the car. In winter, a parking heater is useful. You start off with clear windows in a warm vehicle. With a tight budget, I often find the priority given to a double garage to be too high.

About the furnishing plan:
Just as suggested by @Arauki11: There is nothing better than model building. Two-dimensional models with cutouts on graph paper work quite well. Don’t make the model too small. By the way, quick model building is preferred in some companies for an initial evaluation of computer simulations because it allows benefits and errors to be recognized much faster.

Home office:
If you only occasionally work from home and don’t really want an office there, don’t build a dedicated office room. That is easy to solve.