DJF,
You probably have no intention of ever splitting up with your girlfriend, but these things happen.
My apologies for the shower of cold water I am about to dump over you both.
But, to be blunt about it, you are walking into a potential minefield.
The institution of marriage was created in part to address rights of property and succession.
But succession rights are a whole minefield to themselves and if there are other family members, you need to get ownership, garden plot and access rights sorted BEFORE you build anything.
Also, unless your girlfriend is the sole inheritor of the land and marries you, you may have little comeback if you split up down the line, she is left in occupation of the house and you have no way to get your money out of it.
In summary,
- Build only on land you own.
- Don't build on land you don't own
- Don't build on land your girlfriend owns
- Don't build on land your girlfriend doesn't own
- Don't build on land your girlfriend's grandfather owns
I am not being malicious or bad-minded, I am saying this for the good of all parties concerned.
ONQ.
[broken link removed]
All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent legal and building professionals should be asked to advise in Real Life with rights to inspect and issue reports on the matters at hand.