The cost for a job is done on an individual basis and can range anywhere from a few hundred dollars to thousands based on the extent of the job. Each party interested in hiring Frontier Surveying Company receives a written proposal with the price range and estimated amount of time necessary to complete the job. For a survey to be valid, it must contain the signature and seal of a Registered Professional Land Surveyor for that state. Each state has its own registration process and set of standards. You can ask the previous owners, or if it is a family tract, ask any elderly relatives.
Property can change hands several times over several years and never be resurveyed.
A copy of the survey may be kept on record at the County Courthouse, but it is not required. You should have the property surveyed to verify your assumption. If it is the case, then there are different legal routes to solve the issue. You should contact an attorney to clear up the issue.