Renovation obligation in old buildings, please provide an assessment

But that also depends. Whoever buys an unrenovated old building, of course, pays less purchase price but has the opportunity to decide everything themselves during the renovation and to change it according to their own wishes. That definitely has its advantage. And everyone will recognize that this property has a renovation backlog; there is no need to hide anything. What the buyer does with it is their business. You simply state the current condition and that's it. An energy certificate can be obtained online cheaply and quickly. I would do that because it is legally required.

Of course, it is possible that the new owner wants to add an extension. However, the material for the insulation costs almost nothing. In return, the insulation can be listed as a carried-out measure, which in this case probably increases the selling price. Also list everything that has been done. And well, then it just goes into an apartment. If you don't feel comfortable, you don't feel comfortable. For me, it would be more important to live the short life well and not be forced to live worse because of money.

Anyone who buys an unrenovated old building naturally pays less purchase price, but has the opportunity to decide everything themselves during the renovation and to change it according to their own wishes. That certainly has its advantage.

Unfortunately only for the buyer. Because the difference in purchase price between unrenovated and completely renovated is greater than the costs for it. In the absolute top locations there are exceptions, but the market there is sick.

Yes, then the convenience surcharge compared to a property where you only have to drill the shelves simply doesn't apply. But there are certainly buyers for whom the freedom of choice is more important. A home where you don't really like the tiles and floors, among other things, can also be a reason to refrain from buying. I found it positive with our house, as we were able to arrange everything according to our taste.

Nevertheless, the current condition must please the buyer. The layout of the rooms, stairs, window area, etc. must be right. You can remove a load-bearing wall, but if the old building has several enfilade rooms, it becomes difficult.

In this case, a missing central heating is a very big minus that severely prevents good prices. It may be nice that the walls are freshly plastered, but for a new heating system, some walls will have to be opened up again.

If you don’t trust yourself to achieve the best possible sale, this is a case for the real estate agent. In the preliminary discussion (without commission), he will hopefully already be able to say in which price range he would set the house.

Average price here is 3100€/sqm
Don’t know how much the renovations and age depress the price :/

For the house, rather calculate with the standard land value * plot size + 1500 €/m² * living area.

It very much depends on what the suitable target group is. So ask yourself critically whether the house rather falls into the category "gem, except for your personal taste" or "a feast found for the stereotypical fearless Pole."

There are top objects there and also old duds. You have to know which average you are talking about.

Averages where the top and bottom tenth have not been discarded are statistically practically useless (except for tendentious political agitation).

In this case, a missing central heating is a very big minus that strongly prevents good prices.

Those who, as is "not uncommon" nowadays ;-) want to install underfloor heating will not be so ungrateful for not having to knock out radiators and pipes first—the work far exceeds the metal value anyway. But in the sense of my opening remark, it rather comes down to the target group of hardcore DIYers than the target group of gem hunters. That is, the buyer would probably even be happy if he can simply roll up and reuse the insulation loosely laid on the ceiling there ;-)