Which house concept? Fundamental questions of house construction

Sorry, I still can't send a PM. But it wouldn't help you anyway: since we have different conditions, the offer won't help you either. As a note: from what you sometimes read here about prices, this is a provider with normal to low prices. But we haven't planned a palace either, so it's hard to judge.

It was not about eco-friendliness and wood chopped in the midday sun during a full moon. But what use is it to design and pay for a house to be healthy to live in if the new wall unit ruins everything.

Passive houses have a heating system. From air-to-air pumps to normal air-to-water heat pumps with underfloor heating.

: May I ask where you are building? Can you then provide some details about basement yes/no, heating, and KFW standard? Thanks!

With moon wood, the idea is that it is felled in winter when the plant sap is resting and the moon presses it into the wood similarly to the tides at ebb... and yes, you shouldn’t fill the rooms with Ikea furniture. But again, it also depends on the quantity and a significant reduction of possible pollutant sources is the basis. The PVC insulation of the cables inside the wall then doesn’t matter.

Quote Wikipedia:
"Under a passive house is understood a building that, due to its good thermal insulation and the functional principle of significantly reducing ventilation heat losses by means of a heat exchanger, usually does not require a classic, water-based building heating system."

That I can also install a (water-based) heating system in a passive house is clear, whether that makes sense and fits the original idea behind the passive house is another matter.

Much of it is marketing. One must not forget, every seller has the best and only wants your best (money).

We absolutely agree on that! And what doesn’t cost anything is worth nothing, and whoever wants the best must also dig deep into their pockets.

Nevertheless, especially in the long term, there are expensive solutions that are not quite as good and cheaper solutions that are better. And that is exactly what matters to me now, to find a coherent overall concept. There are also nice examples of buildings without controlled residential ventilation and without heating that are still warm enough in winter. Excellent insulation, large window areas, and the right location make it possible with perfect planning.

I just don’t want to back the wrong horse, like the people who relied on night storage heaters back then.

The building should stand for at least one more generation with proper care and cause as few follow-up costs as possible. And also in terms of running costs, be as "cheap" as possible. Whether electricity will still be affordable in the next ten to twenty years or we will be flooded with cheap gas from Russia is something no one can say. But currently, renewables are being expanded and I hardly believe a fusion power plant will stand in Germany in five years.

With the room program you won’t really get under 160 sqm. You can save by
- simpler floor plan
- flat plot
- settle on one focal point
- find a house builder who exactly has this focal point
(let’s just take healthy living. Reading labels and selecting materials can probably be done by anyone, it just costs. If you have a house builder who really does and lives by it, he will not offer you anything that does not comply. He doesn’t need to look for alternatives. Everything runs smoothly and he might not pay more for the other color than the one without healthy living costs)
- look for a construction service description that best matches your ideas.
(Upgrading from a hand shower to a concealed rain shower costs a lot of money, downgrading the standard concealed rain shower to a hand shower gives you at most a credit for the value of the goods)

We built a passive house, solid wood, healthy living (didn’t even know that existed) ready to move in in 2017. The price was not that outrageous. For that, an energy saving ordinance house from that supplier (if he had built it) wouldn’t have cost much less. The slope was and is the cost driver

You can save
- simple floor plan CHECK
- flat plot of land CHECK

What is a construction service specification?

We built a passive house, solid wood, healthy living (didn't even know that existed) ready to move in in 2017. The price was not that outrageous. For that, an energy saving ordinance house from that provider (if he had built it) would not have cost much less. The

That sounds good! I'll take that too
Yes, you just really have to find the right provider and separate the wheat from the chaff. As I said, we don't have high demands for the bathroom. We live in an old building and have been showering in a bathtub with a handheld shower behind a shower curtain for ten years. A simple shower enclosure will be enough, and such a wasteful rain shower also needs a correspondingly powerful hot water system. If I need a wellness temple, I go to a thermal bath and not to the bathroom

Yesterday a conversation with a prefab house builder... Me: There are also passive houses... He: Yes, but we don't offer those. There are also homeowners who moved out of their passive house after a few years and built a "normal" one again. Me: Thanks for the conversation...

So you (singular) or you (plural) are fully satisfied with your passive house? Are the annual heating costs approximately within the forecasted range? I mean, if the price is similar or the surcharge is low, it has to pay off, right? Although it is always said that saving the last few kWh is the most expensive.

A WDVS made of EPS is also diffusion-open, precisely because it is not 100% diffusion-tight. Marketing hooray.

If the indoor air is humid and condensation forms on the wall, all diffusion-open building materials in the world won’t help to move the droplets outside. That is simply nonsense. The amount of moisture that a diffusion-open wall can transport outward is ridiculously small compared to, for example, any kind of ventilation, so one has to wonder why this can be used as a marketing point. This supposed material property has no significant impact on the indoor climate.
The homeopathy of the construction industry.