Strategy for selling a house - what is the best way to proceed?

I had thought about that too. I could imagine that for some buyers this already leads to a kind of closing-time panic.
So far not much has happened on the interest rate market, but the trend is becoming visible.
If I have been thinking about buying a house for a while and see "oh, it's slowly getting more expensive," I will probably try to close the deal before it gets really expensive.

The closing-time panic was already there in the last 1-2 years. Now comes the interest rate shock – because "not much has happened" already means 0.4 percentage points more on the 20-year fixed interest rate. That is suddenly €25,000 more in interest costs for your example with a "6 in front." And interest rates are still rising, the FED’s steps are coming, uncertainty continues to grow. At the same time, prices are currently diving – those who have their equity there are losing connection too.
The consequence: more and more households drop out of the circle of those who can still buy or build.

It is often a mistake to think that there is a price difference between a house (identical size) built in 2000 or 2015. They are offered on the market at pretty much the same maximum price. In other words – especially the older properties, for which a renovation won’t be approved by the bank, are disproportionately expensive compared to new builds.

Wait for the appraiser’s value, contact a second provider, have it calculated from your financial advisor’s system, and then see what emerges. From then on, use the benchmark – try it out. With your ideal price. I would start with a code in the local newspaper & see what kind of responses come in. Maybe you’re already well on track there. If not, or if the bids are significantly below your expectations, you can always start adjusted online.

Recently, I was called by a property investor on my street who had heard that we wanted to sell. He would buy the property.

Some people really don’t hold back anymore.

The aforementioned gentleman wrote to me via WhatsApp that he had heard we "still hadn't been able to sell our house" and that he could quickly take care of the formalities at a "reasonable price."

And finally, he wrote that price expectations starting with a 4 are neither market-appropriate nor economical for our property.

How can someone think something like this would work?!

Some people no longer hold back on anything.

The above-mentioned gentleman wrote to me via WhatsApp that he had heard we “still haven’t been able to sell” our house and that he could take care of the formalities very quickly at a “reasonable price.”

And in the end, he wrote that price expectations starting with a 4 are neither market-appropriate nor economical for our property.

How does one come to think that something like that could work?!

Why? He’s obviously not desperate like all those private last-minute buyers. In other words – it only costs him a few (embarrassing for normal people) messages. If it happens by chance, he might be lucky – if not, it costs nothing. And you’ve moved away anyway, so you don’t see each other anymore.. ;)

And he is most likely even right with his last assessment – today’s peak prices are absolutely not suitable for buying and renting, there’s way too much bubble in the transactions. This was also reflected by the appraisal values you mentioned. In other words – for investors with money from the ordinary circuit, many properties for renting are simply uneconomical.

It only costs him a few (for normal people) embarrassing messages. If it happens by chance, he might be lucky – if not, it costs nothing. And then you’ve moved away anyway, you won’t see each other anymore..

Well, money is made in purchasing. That’s how it is.

I have actually already looked around the rental market, and for the price we are currently paying here, I couldn’t rent a house, or at most "just barely". That also surprised me a bit.

By the way, I don’t think I’ll try the "6 at the front". I can’t imagine that price can be achieved. It’s simply a Geierwally price, and people don’t like Geierwallys. Also, it almost feels like a taboo to start the price with a 6. At least I know what I would think if I were a buyer and saw that someone was listing their property similar to ours for 600k+. However, the range of prices starting with a 5 is also very wide.

I’m still undecided. But I don’t believe that a large part of the buyer base has dropped out because of the interest rate increases. A few have certainly been thrown off track, but if I have to finance so tightly that a 0.4% increase in interest rates would throw me off, then it was pretty tight anyway, right?
And then I have to quote the 11ant again: We need exactly ONE buyer.

I have actually already looked around the rental market, and for the price we are currently paying here I couldn't rent a house, or at most "just barely." That's something that surprised me a bit.

But the comparison is flawed because the rent also includes maintenance and the rent doesn't tie up capital. Your payment is influenced by the equity you put in and the desired repayment rate. Nevertheless, renting houses is super difficult due to lack of supply, price expectations (if good, then expensive), or condition.