Remove the previous owner's company address from our registered address

Is the company bankrupt and are you expecting free debt collection agents ;-) who will knock on your door with a battering ram or steal your Lamborghini as a down payment?

That there are angry builders at the door is not unlikely at all considering the quality of his work on the house :D

But I just don’t want that as a matter of principle. I also find it outrageous that there are still people registered in our house, but that can be resolved; with the company, I don’t know how.

A lot of things are pretty... shady... there, and we don’t want to be involved in that.

He can't necessarily do anything about these directory services. If it's a corporation, the company headquarters can be officially verified in the [Unternehmensregister].

If it is a corporation, the company headquarters can be officially traced in the commercial register

Also for partnerships. Only the commercial register is official and must be kept up to date. Private registers are not in a hurry to dust off, they still gladly contain "truths" (or something like that) from the Deutsche Mark era today.

Just because they are still listed as an address on MyHammer, Branchenbuch, and Firmenwissen, it does not automatically mean the company is still registered there. Whether they are still registered there, you will most likely find out at the trade office in your city. If they are indeed still registered there, the trade office will follow up on the missing re-registration.

Firmenwissen is from Creditreform. They collect data, for example, from the commercial register, financial statements, etc. Now the question is what legal form the company has or had, and whether financial statements still have to be submitted at all. I would simply write them an email and ask for verification, since the company no longer resides there.

At MyHammer you can leave a note about the company at the bottom.

Before I would write a complaint or post texts in the forum, I would send a pre-written text to the portals and be done.

Bei Personengesellschaften ebenfalls.

Yup. But now it depends on the legal form whether there is a registration obligation. For sole proprietors, that would not be the case afaik, since craftsmen are non-merchants.

named the correct place that could clarify it beyond doubt. An outdated listing on myhammer wouldn't bother me.

Before I would write a report or post texts in the forum, I would send a pre-prepared text to the portals and be done.

Contact each portal individually? Would surely take longer than 3 posts here in the forum.

I would simply write them an email and ask for verification, since the company is no longer located there.

I will try that, thanks.