I think it all depends on what are the conditions of the house you want to buy. Each house might be subjected to different rules. This specific house clearly has structural problems which are evident from the cross shaped cracks in the wall of the kitchen and the dry walls which look quite loose. Even though working on your own house is not necessarily forbidden, you would definitely need a geometra and an authorized plan to stabilize it. Earthquakes are no joke in Italy. From the way it looks you would also need to re-do the electric system and heating which need to be certified for safety. Once you get the house stable and safe you can do the finishing by yourself. However, in my experience of old houses (I own a farmhouse in Umbria) buying something in such bad conditions always turns out to be lots more expensive that buying something where you can live already and just need to upgrade it to your taste.
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I think it all depends on what are the conditions of the house you want to buy. Each house might be subjected to different rules. This specific house clearly has structural problems which are evident from the cross shaped cracks in the wall of the kitchen and the dry walls which look quite loose. Even though working on your own house is not necessarily forbidden, you would definitely need a geometra and an authorized plan to stabilize it. Earthquakes are no joke in Italy. From the way it looks you would also need to re-do the electric system and heating which need to be certified for safety. Once you get the house stable and safe you can do the finishing by yourself. However, in my experience of old houses (I own a farmhouse in Umbria) buying something in such bad conditions always turns out to be lots more expensive that buying something where you can live already and just need to upgrade it to your taste.