A boundary survey establishes the property lines of a parcel of land using its historical records (deeds). This typically involves the setting or restoration of monuments or markers at the corners or along the lines of the parcel. A final plat depicts parcel boundaries with dimensions, acreage, and monumentation found or set. The plat also indicates the extent of any easements or encroachments, all improvements such as structures, utilities, and other permanent changes to the property.