A dispute over where a boundary is located can usually be solved by having a survey completed by a surveyor, who will mark the boundary (according to the land title documents) on the ground or on existing structures. A person who deliberately moves or removes a survey peg (other than to build on the boundary or as permitted under the Survey Act 1992 (SA)) commits an offence. That person can be fined and will also be liable to pay for the boundary to be re-surveyed [s 52].

If a river or stream runs between 2 properties, the centre of the stream is usually the boundary, although this kind of boundary can change as the stream gradually cuts a new course.

Generally, if a fence is not on the proper boundary, it does not change the ownership rights to the land.