Hi Bruce
You will need a geomtre to prepare the plans and submit them for approval. We have been told because we are in a National Park we can't make any changes to the outside that would not be in keeping with the historical aspect of the building. We were also thinking of a second floor terrace but haven't yet pursued planning permission as everyone has told us it probably won't be allowed. You can do anything to the interior you want as it is not visible.
Walter is great and he was born in Bussi just down the road so he is familiar with the area. He's the only one in the bank who speaks english!
If you go to Marini's in San Pio they have show kitchens and bathrooms set up so you can see what is possible as well as stocking everything under the sun!

We hope to be there in September so you will have to show us your house!
Barry