Construction costs are currently skyrocketing

There was nothing open-plan anymore.

Not open-plan. But huge rooms separated as living/dining and kitchen. Often you could really create something modern by partitioning and making a wall breakthrough.
In my job, if it was from the 60s, 70s, or 80s, I was almost always confronted with such large living rooms. At home, I often reconstructed the floor plan with a pencil and replanned it appropriately. But whatever. Doesn't fit the topic.

And sorry for digging up the old post again. You don't happen to want to move to the south, do you? Scout ID 134285757 should cover the list quite well.
You can even cycle over for a coffee at my place ;)

That would actually be perfect, also cheaper than our current house and close to Konstanz, so almost Switzerland. :) If we hadn't just recently settled here in the Neueseenland, I would be in. :)

I paid 5k for materials, and another 700 for customer service including adjustment and calculation. approx. 250m2, 2 residential units. Built in 2021. 11 rooms, 14 plates, 7 exhaust air, 7 supply air. Central controlled residential ventilation with cross heat exchanger and enthalpy, ventilation volume (nominal value) 230m3 The installation was EL

Was the installation feasible in EL? Was this your first time doing it?

We are currently planning to install the controlled residential ventilation ourselves. Although I have not done this before, I am handy and honestly consider it not too complex. With a proper installation plan + pre-existing holes in the concrete ceiling, this should be doable, right?

Was the installation feasible in EL? Did you do it for the first time?

We are currently also planning to install the controlled residential ventilation ourselves. I haven’t done it before, but I am handy and honestly consider it not too complex. With a proper installation plan + holes already prepared in the concrete ceiling, it should be doable, right?

Design and calculation of flow losses, throttle valves for the individual rooms, etc. were calculated by an engineering firm. I then laid the ventilation pipes directly into the concrete ceiling. After setting up the delicate ceiling, before the top reinforcement and pouring. Just like electrical cables.

I chiseled the holes myself, I didn’t have a suitable core drill.

Yes, the first time, it’s not rocket science. The important thing is proper planning; if something doesn’t work out there, there will be problems later.

What are the current experiences? We still have great difficulties finding an architect or a construction company. Hardly anyone wants to quote prices, and offers with price guarantees longer than 7 days are so rare, I might as well play the lottery.

Wood should be possible in the current situation by now, right? Steel is probably similar? Stones and roof tiles as well as the technology are currently in short supply?

Just checked at KfW. We signed a week ago (the condition could already be secured for 10 days before, so it comes from somewhere around two weeks ago).. We have 2.5x % and now it would be 2.86%...So it has been raised again

Today KfW-124 at 2.91%. If the ECB raises by 0.5 percentage points, the interest rates will rise again, although a planned key interest rate increase is already priced in currently. I think we will see 3% and more in the medium term for 60% loan-to-value and 10-year fixed rates. 80-106% will rather be 3.5-4%. As a reaction, new buildings will be planned smaller again (100-130 sqm), very large existing properties will rather fall somewhat in price or at most stagnate.