Do surveyors have any special rights to access private property?
Surveyors/utility locators can be on road rights-of-way (both maintained and unmaintained), but they need permission for right of entry onto private property except where an easement allows such access. Since the right-of-way lines are not marked, property owners are often unclear about where right-of-way lines are. Often years of maintaining the right-of-way blurs the memory. Property owners may also be unclear about easements or the terms of easements on their property. If you think that someone has seriously trespassed on your property, identify who did the survey/utility location work and make your concerns known.