Workshop Program: Determining Property Corner History


This workshop teaches land surveyors how to construct and analyze property corner histories, a critical component of an effective boundary resolution. It explains the difference between a corner and a corner monument, defines original monuments and retracement monuments, and considers how to evaluate evidence of corner location. This is an intermediate workshop with content for students that already have some experience with boundary surveying.


What You Will Learn

  1. The difference between a corner and a corner monument.
  2. How our legal system treats original monuments and retracement monuments.
  3. The 6 step process to determine property corner history.
  4. How to evaluate the different types of evidence of corner location.
  5. How to handle gaps in property corner history.

Teacher Bio

Landon has practiced as a licensed land surveyor in Central California and Western Nevada for 15 years. He specializes in providing surveying services to support the design and maintenance of large public works. These public works include dams, levees, canals, pipelines, roads, and railroads. He has lots of experience executing very large boundary surveys.

Landon believes it is critical for boundary surveyors to understand the concepts like the differences between original monuments versus retracement monuments or the way to handle conflicting evidence of corner location.


Landon Blake Business Portrait

Workshop Outline

  1. What is a property corner?
  2. What is a property corner monument?
  3. Determining Property Corner History
  4. Evaluating Evidence of Property Corner Location


Workshop Questions

The workshop will answer these questions:

  1. How are property corners created?
  2. Do property corners ever die?
  3. What are the differences between and original monument and a retracement monument?
  4. What is a pseudo monument and how are they created?
  5. What is a corner accessory and how are they used?
  6. How do you related corners and corner monuments to land records?
  7. How do you build a timeline for corners?
  8. Why types of evidence do you need to consider when determining a property corner location?

Workshop Exercises

The workshop will include the following exercises:

  1. Constructing Property Corner Histories for Section 23 (Example Survey)
  2. Dealing With a Gap – Drawing Logical Conclusions (Example Property Corner History)
  3. Evaluating Pseudo Corners on a Filed Survey Map (Example Survey)

Workshop Links

Links for the workshop will be coming soon.

Professional Development Hours

You should be able to count 3.5 hours of professional development for the workshop. (Please check with your licensing board or certifying authority on the eligibility of this workshop for your specific continuing education requirements.)

Date, Time and Location

This workshop is currently scheduled for April 25, 2017 in Irvine, California.

Price for the Morning Session

The price for this workshop is $149.

Take This Training As An Online Course

This training is offered as an online course for individuals and groups. Certification of course completion is available. If you would like to take this training as an online course, or would like us to offer an online course to your team, please reach out to Landon Blake by e-mail.

Customize This Training For Your Organization

Redefined Horizons can customize this training to meet the specific needs of your organization. We can add or remove topics, craft examples from your practice, and design systems to measure team member learning. If you are interested in customizing this training for your organization, please reach out to Landon Blake by e-mail.

About the Terry Hayden Memorial Scholarship

A portion of the profits from this workshop supports the Terry Hayden Memorial Scholarship.

Terry Hayden was a very important part of the land surveying community in Central California. He founded his company, Aerial Photomapping Services, in 1987. He was a member of the American Society For photogrammetry and Remote Sensing, California Land Surveyors Association, American Congress on Surveying and Mapping, ACEC California, and the Management Association for Private Photogrammetric Surveyors. Terry also held a Registered Photogrammetrist License with the State of Oregon.

Under Terry’s guidance APS developed a reputation as a high-quality photogrammetry and remote sensing service provider. He was a key business partner of land surveying and civil engineering firms throughout the California Central Valley. The quality of Terry’s photogrammetric work was second-to-none, and he was a good friend to many of his clients.

Terry was also involved in commercial art, graphic arts, and fine art photography. His black-and-white photography is in private and public art collections around the United States. He taught photography at the Wadsworth Athenuem in Hartford, Connecticut and at the Hartford Art School at the University of Hartford.

Host This Workshop

Would you like to host this workshop at your organization or in your community? Redefined Horizons teaches workshops across the Western United States. If you are interested in hosting this talk, please contact Landon Blake by e-mail.

We can offer the course at a discount for members of your organization or support a local scholarship of your choice if you host the workshop.

Related Workshops

Landon teaches several other workshops on business for land surveyors and civil engineers. These workshops include:

Learn about these and other workshops on the Redefined Horizons Talks and Workshops web page.

Subscribe to Our Boundary Surveying Newsletter

Landon Blake, the owner of Redefined Horizons, publishes a regular newsletter named "Cornerstone" with articles on boundary surveying and land title. To subscribe to that newsletter, visit our Subscribe page. The newsletter is distributed in PDF format free of charge.