Single-family house with flat roof from 1968 / renovated in 2013

I said right at the beginning that I have zero knowledge about homeownership and construction.

Nobody claimed that you had concealed or hidden that.

That’s why I’m asking here and that’s what a forum is for. But you answer questions that I didn’t even ask...

No. My post #11 was made at your explicit request in the form of the follow-up question (post #8). You must have hallucinated answers to unasked questions just as much as you thought there was some kind of pun in it. Today I haven’t included such a thing here yet (but it might still come, as I also write beyond dinner). If you didn’t pick up on the whole broth cube of helpful tips, I can’t help that. It’s in there anyway.

Thanks already! The floors are indeed from 2013, but really have deep scratches and partly sanding marks because the doors don’t fit properly.

Would you hire a construction manager for the following points, which we probably have to do, or award all trades individually ourselves: Sand the floor, partly renew, new baseboards Partly new doors Partly new windows Insulation Flat roof Repair interior walls and different plaster Retrofit roller shutters in the living room

Don’t put the cart before the horse: first have the house inspected by an expert. They can assess everything on site and then estimate what needs to be done. They will also see what has been done by amateurs and what by professionals. This assessment can possibly also help you with the purchase price negotiations. If you decide to buy the house, the question is how much actually needs to be done. For a few trades I would award the contracts myself. But there are often craftsmen who cover several trades within the company. That would then be advisable. For example, last year we renovated the ground floor with such a small "construction company" and they did the interior plaster, drywall, cellar insulation and screed, as well as a few small things like new window sills. Then we only needed a tiler and a plumbing company. That way the coordination with the trades was relatively straightforward. But it really depends on what needs to be done. For a complete core renovation you will certainly get "proper" construction contractors.

I may be a construction layman, but as a lawyer, I am well aware of the legal issues.

P.S.: I actually wrote nothing about legal issues!

That would be a good option. For example, last year we renovated the ground floor with a small "construction company" that then did interior plastering, drywall, basement insulation, and screed, as well as a few small things like new window sills. We then only needed a tiler and a plumbing company. This way, the coordination with the trades was relatively straightforward. But it really depends on what needs to be done. For a complete core renovation, you would certainly get "proper" construction companies involved.

Especially in the renovation sector, there is a wide range of all-rounders who are qualitatively (craftsmanship-wise, and also commercially reliable) diverse. In this specific case, I don’t see a core renovation – rather a carte blanche damage repair (in an object that is somewhat "F" unattractive anyway) ...

P.S.: I actually didn’t write anything about legal problems!

You can’t help yourself, can you? No life of your own?

Because he always exaggerates ;)

The appointed expert can tell you that. Although he won’t be able to tell you whether the pipes are laid correctly, one can probably assume that instead of water pipes, no hemp pipes were laid. That was in his own interest. I’ll just stick my neck out a little and say that some self-builders do a better job than an assistant who can’t be bothered with his work.

Here I agree with @11anten.

So, you can measure that yourself with a folding rule or laser measuring device. If you don’t trust yourself to do that, you hire someone. For someone who comes from construction, that’s no rocket science.

But if you make the plan yourself, you don’t just have things like the thickness of the walls or what a load-bearing wall is, do you?