Cost estimate house renovation year of construction 71

In principle, neither one nor the other is a big problem. The attic is not even used as living space. The wood protection has been on there for 50 years, everything that was ever somehow dangerous has evaporated. Apart from that, the wood is practically exposed to the fresh air, there isn’t even an underlay membrane. It only gets expensive when disposing of it. You have to dispose of it as A IV wood, which costs a lot.

It’s similar with the floor in the basement. As long as it’s there, it doesn’t harm a fly. What exactly is contaminated there? The adhesive or the covering itself? If a loss of a few centimeters in room height doesn’t bother you, just lay a new floor over it. Otherwise, the same applies here: disposal gets expensive. Theoretically, you have to hire a specialist company that will knock it into special bags in full body protective suits and then dispose of it expensively. At the prices quoted, your ears won’t just be ringing. You can also tear it out yourself. Put on an FFP2 mask and into the bags you got yourself. Disposal is still expensive.

You have to dispose of it as A IV wood, which costs a lot.

Well, so-so. In my region last year, the price for an A IV wood container was €180/t gross for disposal. Asbestos at €250/t. For comparison: residual waste at €220/t, recyclable construction waste €12.50/t. Arrival and departure €80. You must not underestimate the quantities that accumulate there, but you don't need to be afraid of the costs. I would claim that the costs of a professional company for labor time, protective equipment, and reconstruction far outweigh the actual disposal. But whether I would tackle asbestos myself... no idea.

The two mentioned damage spots in the attic ([Holzschutzmittel]) and in the basement (the often suspected square PVC tiles with asbestos-contaminated "board," which unfortunately are already lying around the area in some places... :( ) are at least somewhat manageable.

(I have?) unfortunately read a lot about asbestos over the last few days and am probably a bit paranoid. Contamination in the plaster? In the tile adhesive in the bathroom? Carpet adhesive?

Before I start worrying too much, we should probably really take (have taken) a few samples, so the renovation doesn't discourage us and I no longer dare to do the work myself...

I have (unfortunately?) read a lot about asbestos in the past few days and I am probably a bit paranoid.

Then you have read too little. I have the impression you simply consider every building material that is not explicitly known to you as harmless as asbestos just to be safe.