An ALTA/ACSM survey is one which meets the accuracy as well as the general requirements that are defined by the American Land Title Association and the American Congress on Survey Mapping. This type of survey is usually done on a commercial property which has to meet the many and varying ordinances which the states and counties have imposed on such properties. For more specific information about this type of survey please feel free to view the American Land Title Association as website to view the most current standards associated with this type of survey.
The American Land Title Association can be found at: www.alta.org