Duty of Care

“n. a requirement that a person act toward others and the Public with the watchfulness, attention, caution and prudence that a reasonable person in the circumstances would use. If a person’s actions do not meet this standard of care, then the acts are considered negligent, and any damages resulting may be claimed in a lawsuit for negligence.” –

The Reasonable Land Surveyor

No One is Perfect. But Professional Land Surveyors Are Expected to Practice with "Reasonable Care"

Who or What Decides What's Reasonable? Look Below to Find Out.


Clark on Surveying, Brown’s Boundary Control, and Evidence & Procedure for Boundary Location is THE Textbooks used by Practicing Surveyors and Surveying College Students to understand the expectations of the Public of PLS’s.

Dr. Nettleman co-authors Evidence & Procedure and serves as a contributing author to both Brown’s and Clark. His lectures on Surveyor Professional Responsibility based on these texts have set the standard for the past decade.

Court Cases

Finding good case law regarding Professional Land Surveyor standards is often difficult because there are only a few thousand active surveyors licensed in each state. But chances are, if it’s happened in your case, something similar has occurred before.

Dr. Nettleman’s two decades of case law searches have allowed him to create a large database of the most useful PLS cases. Often, a case previously relied upon will be useful in an upcoming case as well. You can rely on Dr. Nettleman to find the case law necessary to establish a Reasonable standard in any one of the 50 States.

Connelly v Smith
Cragin v Powell
Spainhour v Huffman Associates