This scenario happens far more often than most people realise, putting up a building on the wrong plot of land. If you are not going to do your due diligence then you will suffer the consequences.
If you build on the wrong plot, the only person to blame is yourself.
And certainly more minor property line disputes happen all the time--including situations where the infringement probably seems inconsequential relative to the heat it sometimes causes.
Certainly. My middle son was looking at buying a property in a near by town. He asked me to come an look at it. We had the actual shire plans for the blocks and while looking at the property lines, we measured the actual fence to fence widths. The block was being sold by the owner of an adjoining block and when we measured we found that the fence line had been moved by about 20 to 30 cm. On querying the owner about this, he was somewhat angry that we were questioning where the fence was as he was the one who had it built.
From what I could see, the builders most likely kicked the boundary peg out of the ground and just put it back willy nilly.
As a consequence, I did advise my son to have nothing to do with the property and we did inform the real estate agent of the problem. This would put legal responsibility on the estate agent if it was sold without the boundary line being corrected.
Due diligence is necessary if you are doing this kind of thing.
If you build on the wrong plot, the only person to blame is yourself.