An ALTA-ACSM survey, also known as a Title Insurance Survey, is a very high quality survey, done to the exacting standards of the the American Land Title Association (ALTA) and the American Congress of Surveying and Mapping (ACSM).

These surveys are typically done for high-value commercial properties where the lenders and the buyers want additional certainty about the quality of the boundaries and the land title. Land boundaries are measured to a higher degree of accuracy than with a normal boundary survey, and the survey also addresses detailed matters uncovered by a title insurance report.