Convert paved extension into living space

I did not receive any information about heating costs.

Interesting floor plan.

Interesting floor plan. From the kitchen through the conservatory, through the bathroom into the living room? Who messes up something like that?

I allow myself the assumption (I often worked in such "houses" on weekends in my youth, there were many of them here from the post-war period) that this is fundamentally a very small residential unit, possibly a weekend house or an illegal building.

It probably all started with the small area consisting of a hallway, kitchen, storage room, and the lower part of the bathroom. Then over the years, it was simply continuously extended.

A demolition would probably have been more sensible...

Interesting floor plan. From the kitchen through the conservatory, through the bathroom into the living room? Who designs something like that?

I also had the suspicion of an extended weekend or holiday home. In the picture, it also looks somewhat remote. I hope for the OP that there isn’t also an outdoor area added.

and what does the energy certificate say? Or is the house located in Austria, where different laws apply again?

.. Biolek would say. Interesting as a synonym for "absolutely not". I can't make sense of the floor plan either. It is very peculiar and the auxiliary rooms split the living area from the entrance and kitchen. Everything leads through a convoluted bathroom. It looks more like a fool's errand or like the house of an enemy. Sorry, but that's just how it is.