Hi Colin.
Read this it may helphttp://www.livespainforlife.com/Property/Sellingyourproperty/tabid/139/language/en-GB/Default.aspx
But it seems to refer to electricity connections.
As i told you, I was told they will never issue a C De H for Rustic Fincas.
We saw a solicitor before Christmas for this very same subject and he said we needed one but didnt know if we'd get one, he thought it would be a local decision and we'd have to get an architect.
                       Terry