Unexpected sale of rented apartment. Options?

Regarding the incidental purchase costs: NRW private purchase 6.5% property transfer tax + notary + land registry

New rental apartment: couch and kitchen would need to be new + moving costs (and anyone who knows my posts knows what I need in the kitchen…)

But the fact is: our apartment is worth about €2100/m2 according to online remote valuation. Listed at €3000/m2.
If it can only be sold with us inside, and if we don’t take it, I don’t see a buyer, not even given the current market situation. I will take another calm look at price setting.

So, you are informing yourself. The apartment seems to please you, just not the price. There are two people sitting at the negotiating table here. Your landlady tried to put you in a worse negotiating position with the “threatened” termination. It was worth a try. Now you should make your better starting position very clear to her (for the left thing with the 6 months’ termination, she would really bleed with me).

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Excursus, a little insider talk (because it fits right now): professionally I occasionally have to deal with landlords too: A and B sell their house to C at a slightly lower purchase price, but with the option to rent the old house for 3 years at a cheap rent and look for and move into a senior-friendly apartment during that time. Shortly after the notary appointment, B dies and A is left behind. This now causes C to no longer strictly adhere to the agreed years and a few weeks later starts making life difficult for A (cutting down trees in the garden and devastating the garden, constantly appearing at the door for viewing appointments, and lots of other nasty actions) so that A doesn’t complete the 3 cheap years. So, C is a really arrogant a**hole (acting all entrepreneur-like, but inherited and not so bright himself), thinking he would get away with it. I then really made C bleed (actually, the plan was to of course stick to the contract and move out within the three years), resulting in the property being rented for the cheap rent for another 10 years. And C tried everything to end it early (including termination due to own use), but eventually he resigned himself to his fate and settled for regular rent increases (thanks to the rent cap, these were limited). He truly earned that tuition fee.
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What I want to say with this is, a) always treat each other fairly or accept the headwind, b) don’t let yourself be intimidated, landlords generally have a worse position than tenants.

So in your case, you should be able to negotiate an adjusted price; your landlady is clearly in a worse position. If the price is right, I would rather invest in the condominium, no moving stress, equity initially parked in concrete gold, in case of a later house purchase, the condominium is equity whether (then empty) sold or further rented out.

How many square meters are we talking about here?

84 sqm maisonette 2nd floor without elevator 3.5 rooms.
Asked price per sqm based on what good new-build apartments in the same location fetch.

We have not been informed of any notice for personal use. The notice period would be 6 months in case of genuine personal use - which is not the intention of the sale.

Thanks to this information, I feel my leverage increasing.

Selling the apartment overpriced and rented out, I might possibly risk seeing that!?

We are first gathering information from the banks and the [WEG].

84 sqm maisonette 2nd floor without elevator 3.5 rooms. Asked price per sqm is what good new-build apartments in the same location bring. We were not given any notice of termination for own use. The notice period would be 6 months if it were genuine own use – which is not the intention to sell. Thanks to this information, I feel my leverage growing longer. The apartment overpriced and rented out, selling it would be something I might risk seeing!? We are now first getting information from the banks and the owners' association.

What is the net cold rent? How is the rental market currently? Vacancy rate in the region? These are also important criteria to consider. Would you like to name the city?

Don't let yourself get crazy. It's nice of the landlady to give notice before there is a new owner. If the price demand is at the level of new-build apartments, the sale will take a while. In the coming months, nothing will happen at first - or the property will get significantly cheaper.

If it is easily rentable afterwards, why not buy. Then you won’t have the hassle of moving if someone buys the whole thing for personal use.

Don't let it drive you crazy.
It's nice of the landlady to inform you before there's a new owner.

She has to. We have a right of first refusal.
Right of first refusal + no reason for a proper termination + asking price is excessive + no real pressure to sell, just a desire to sell would be the summary in brief.

What is the net cold rent? How is the tenant market currently? Vacancy in the region?
These are also important criteria to consider.
Would you like to name the city?

8.35€/m2 for 84m2 + 50€ for the garage.
Bottrop on the edge of the Ruhr area, here the second most expensive residential location, wedged between the city center and a nature reserve.
Vacancy practically non-existent.