Im my experience where these log cabins run into difficulty is when the client needs a mortgage to pay for it....
In order for a mortgage to be taken out on a property it must be shown, by certification by a qualified professional, that the structure complies to building regulations.
These log homes are generally non-irish, therefore are constructed to different building regulations... therefore it is almost impossible to get a professional to 'certify' them..... therefore no mortgage given, therefore no log home....
I have seen plenty on my travels throughout ireland, so either the clients:
1. payed for it without a mortgage,
2. the system is certified to comply with irish building regulations,
3. a professional certified that it complies to regulations (unlikely),
4. the mortgage was given without need for certification (unlikely),
My only advise is to do plenty of homework before putting in any order...