How to go about splinting a large apartment into two smaller ones in Poland?

Sorry another complicated question. Looked at another property and its setup pretty well to split it in half without much effort.
There use to be a door but bricked up now and covered.
What are the legals and steps to have a door put in and a few pipes moved and one or two dry walls?

It seems a better option to split the place if its not too expensive to cut the red tape.
Do you need following?
Drawings
Notary
Planning permission?

Pretty much nothing changes in the apartment, just adding one dry wall and front door, a opening in another dry wall and a bathroom door?

and closing two old door openings in drywall. Then some minor plumbing and that's all. On the other side there is plumbing for a bathroom already.

I could like in the UK make two internal doors from the main door but it does not utilize the space well. But then I could claim I am renting part of the one apartment out and no need for changing the status. But will this effect insurance? Lets say the tenant burns the place down?

cheers
CI

Yes. Lots of them.


Yes. And a lawyer too most probably (for the making of the land & mortgage register entry).


Probably not planning permission. But you will almost certainly need permission from the local authorities; and I'd be astounded if you don't also need permission from the building administration, who probably won't want to give permission and certainly don't have to give permission.


Gas piping and meter? Cold water pipes and meter? Hot water pipes and meter? Electricity supply and meter?


You haven't been in Poland all that long, have you.