An ALTA survey is a “monumented land survey” showing all visible improvements situated on a particular parcel of land and within five feet of the boundaries of said parcel. The required details of an ALTA survey are published and regulated by the American Land title Association and the National Society of Professional Surveyors. A “monumented land survey” is a boundary survey in which all monuments are either found or set. If monuments are set in a platted subdivision older than 20 years old, a surveyor must also file a “Land Survey Plat” with the County Clerk Recorder’s offic