The actions of surveyors and landowners have a large effect on property boundary locations. A property boundary can be easily determined on the ground if there is an official record showing an unbroken chain of evidence of monuments, surveyor actions, and landowner actions. Unfortunately, this official record usually does not exist. The only persons who can straighten out the mess and bring the record up to date, short of court action, are a thoroughly competent, professional land surveyor and a lawyer, working together. Regular title insurance doesn't insure anything as to your boundary on the ground.
Special policies covering the boundary on the ground are very expensive and of questionable value.
The best boundary insurance a landowner can get is the preservation of all the original survey markers and records and a jealous supervision of his boundaries to make sure no surveyor or landowner encroaches in any way whatever. If anyone such as a builder or contractor destroys one of your property corners, see your attorney immediately. He may wish to force re-establishment of the corner at the builders expense or bring a suit for civil damages. You may lose considerable land because of this destruction. Don't forget that a corner that has been destroyed and subsequently re-established is not free from the possibility of an encroachment suit from the adjoining landowner unless he signs an agreement.