Is house construction financing possible at all?

I just always find the word "invest" a bit questionable. To me, an investment is something that clearly appreciates in value, allowing me to realize a real profit and ideally "produces" money. A house in which I have to invest a lot of money just to maintain its value is not, in my personal opinion, an investment. If I calculate a 25-year term with, for example, an ETF starting investment of 80k plus 400€ monthly, I end up with over 400k in assets at the end. Yes, it's a simple calculation, but whether this is possible with a house with a similar amount of money spent, I really doubt.

we are just going to the garden for 10 minutes

I always see it as an investment because I think that a certain monthly expense X for housing is simply indispensable. Therefore, I prefer to invest this expense in something that truly belongs to me after paying off the loan. Even if the property’s value will probably not increase but rather decline, it is still better to have a value in your hand in the end from the monthly "housing costs." It’s simply unavoidable; you don’t live for free when renting either. I am also quite familiar with the economic calculations regarding homeownership, and I even acknowledge that renting while simultaneously investing regularly in, for example, a global market fund, may have been significantly more profitable after 30 years. For me, however, there are two major risks opposed to the “rent + invest elsewhere” idea: - often the idea remains on paper. Reality rather looks like renting and consuming the difference to a potential mortgage payment instead of building capital - "stone remains," while money, for example, could lose massive value in the event of a possible hyperinflation. Of course, other disaster scenarios are conceivable in which everyone is expropriated and who knows what, but those are probably far less likely.

By the way, hyperinflation is not a risk with a diversified investment.

I think the current war very painfully shows how badly the economy is doing worldwide because of it.