"Piano Casa 2009" in Le Marche

 As we're in the process of negotiating on 2 ruined farmhouses in Le Marche, the new Piano Casa 2009 rules pertaining to possible expansion of the property volume are extremely interesting. Everyone we have asked in Italy gives us a different answer, ranging from "it's only a legend" to "yes, you can add 20%". From reading past posts on the old forum, there seems to be a wide variation and from what I can see online, each region is interpreting the rules differently and drawing up their own guidelines in their own timescale ...Does anyone here know if Le Marche has drafted any proposals yet? If so, are they available online anywhere? (Italian is OK). If not, does anyone know what the possible timescale is? My problem is that we might be drawing up plans in the next few months but we would need to know how big we can go since we will be starting with a ruin that needs rebuilding from scratch.Thanks!Brancusi