ᐅ Question about Renovation (Concealed Installation) of an Apartment in a Residential Building

Hello,

we are currently considering renovating an apartment in a large residential building.

During the renovation, we will need to adjust some water pipes because the bathtub is going to be replaced with a shower. The toilet will get a concealed cistern, and the water pipes in the kitchen currently come out of the wall above the sink; of course, these will need to be rerouted downwards.

Is it usually straightforward to make such changes to concealed water pipes, or do we need to consult the building management first?

The apartment was inherited by my grandmother and is planned to be sold. Before selling, we would like to fully renovate it to achieve a higher resale value.

Of course, we will still talk to the building management, but maybe someone here knows how this is typically handled?

Best regards
Specki