Land surveying is the technique, profession, and science of accurately determining the terrestrial or three-dimensional position of points and the distances and angles between them, commonly practiced by licensed surveyors, and members of various building professions. These points are usually on the surface of the Earth, and they are often used to establish land maps and boundaries for ownership, locations (building corners, surface location of subsurface features) or other governmentally required or civil law purposes (property sales).
Land surveying is the detailed study or inspection, as by gathering information through observations,
measurements in the field, questionnaires, or research of legal instruments, and data analysis in the support of planning,
designing, and establishing of property boundaries.