ETW - Internal bathroom

So we had an interior bathroom for 10 years. One longitudinal side was almost completely mirrored (3 meters long), the wall there was continuous and the mirror started at cornice height and went up to nearly 3 meters room height. There were many spotlights on the ceiling that illuminated it well. Everything felt very spacious, we never missed natural light. Oh yes, there was a skylight from 2.5 meters room height facing the living room, that was nice - maybe that could still be included.

Not at all. We are talking about multi-family houses, not single-family houses.

Me too. Developers deliberately avoid internal bathrooms (guest toilets don’t matter), which mostly works.
The price lists for new buildings from developers actually show slight discounts for such apartments. Even if it’s only €50 per square meter.
With today’s condo prices, especially in cities, many buyers don’t want to make compromises. You can see that again in this thread.

Just a different question, I noticed that there are developers who advertise with [kwf55] and others with [kfw70]. - the latter is of course to increase the profit margin, or are there other reasons for this in new construction?

the latter is due to increasing the profit margin, or are there other reasons for new construction?

The margin at 55 is usually higher because there is better funding for buyers as a sales argument. In addition, the effort to achieve 55 is relatively manageable. 70 is practically unavoidable, completely sufficient in simpler locations (or in multi-family houses designed more for rental). And in the end, the difference in heating costs is hardly measurable, as it depends more on user behavior than on the construction method.

however, I have the feeling that many architects just quickly draw something without much thought. They don't have to live in it after all.

For buildings with 15 residential units, the proportion of owner-occupiers is likely less than half, meaning the majority of the units go to small-scale landlords. Every square meter of rentable space counts, which means the floor area of each level is played with like Tetris until the doctor comes. Architects only play the music that the developer orders.

that there are developers advertising with KfW55 and others with KfW70. - the latter is presumably to increase the profit margin, or are there other reasons for this in new construction?

I haven't heard anything about KfW70 since the Energy Saving Ordinance 2016. KfW55 provides a funding advantage and at least makes it easier for salespeople to paint a more convincing profitability calculation. A developer primarily earns money from the proportion of units sold preferably before construction begins. Time is money. The standard of the offered properties compared to the market average is the most decisive factor for the speed of sales. A residential property without KfW55 is practically like a car without electric windows on the market. An interior bathroom is more like the dashboard missing the wood, carbon, or chrome inlay. That only scares off owner-occupiers.

nice that my gut feeling matches expert knowledge