I moved and now I have packaging that you can't just throw away (from TV, computer, laptop, …) Can I store it in the basement of the rented apartment or does this violate any fire protection regulations?
Can be stored.
Why do you think the boxes shouldn't be thrown away?
There's no law against this
In such boxes you often store things like accessories, instructions, invoices and other important documents, …
Yes, you can. In contrast, fuels, gas bottles etc. Not. Make the cellar opaque, this is allowed and not prohibited. Anyone else comes up with the idea of blackening you away. The boxes and the alleged risk to fire protection.
In principle, you can store everything that belongs to so-called residential use in attics or in basements. These are also discarded and broken things like a broken computer or the discarded sofa. As a rule, commercial goods and things for which certain requirements apply (hazardous goods such as gas, petrol, ammunition (hunters, sport shooters) etc.) are not permitted. Only in small (small) quantities and, if applicable, in certain containers, where applicable other regulations).
In principle, the landlord can further restrict the use of the basement and attic rooms by the rental agreement or the house rules.
Of course, the landlord can ask the tenant to clean or clean up the basement if he is concerned about the danger to the general public (vermin) or a danger to his property. And in the last instance, of course, he can also terminate the basement, which means that the tenant is then obliged to completely vacate the basement by the notice date).
Okay I see. I thought you would keep the boxes for when a warranty or guarantee damage occurs. Many people believe that they can only file claims if they still have the box.
If you want to store documents, you just have to make sure that the basement is not too humid.