Amazing, can't believe it is the same space!! looks much more roomier. Well done!

Lovely cabinet. What is it made of

Too many unknowns for us to help. Check with your council for any planning permit and permissions required. Check with your body corporate if one exists. If that’s all good then get a bathroom expert to quote. Your local real estate rental agent can also help you obtain market advice on desirability of your change. Good luck

We all know about planning rules and things , but surely it would have been better and easier to knock down and rebuild , put the stove in the new kitchen -- you could then have the rooms where you want , ceilings at heights you want , new timber but more importantly to me -- new wiring and floors and trusses and things where you want . Maybe I'm weird , but to me you either stick with heritage , and tell the story as to why things are as they are ; or you start again , without the compromises . This looks like you have spent a lot , to get the worst aspects of both . And yeah , that stove position is one of the weirdest things I've ever seen , as a direct result of the compromises .