Western
California surveyors file a Corner Record (or Record of Survey) with the County Surveyor under the Professional Land Surveyors' Act when material evidence of a property or PLSS corner is found, set, or reset. The Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG) publishes the official blank Corner Record form.
Filing Requirements
A Corner Record is required when a surveyor finds, sets, resets, or references a PLSS corner and no current Record of Survey or Corner Record is on file. The completed form is filed with the county surveyor.
County Surveyor / County Recorder
Street View Coverage
Of the 4,412 PLSS townships in California, 3,527 (79.9%) contain usable Google Street View imagery — meaning a surveyor can pull up the road camera view of a monument before ever leaving the office. Coverage skews toward roads and populated areas; monuments in remote rural sections are less likely to have a nearby capture.
| Metric | Value |
|---|---|
| Total PLSS townships | 4,412 |
| Townships with Street View | 3,527 |
| Coverage rate | 79.9% |
| Capture depth | Up to 20 years of history |
Corner-Plot Workflow
Upload a California Corner Record PDF. Corner-Plot reads the form with OCR — extracting the surveyor name, township-range-section, monument description, and every bearing and distance tie. The corner is geo-located automatically across the PLSS grid, assigning a GCDB-standard 21-character Point ID and a confidence rating of High, Medium, or Low.
When the monument sits at or near a roadway, Corner-Plot brings up Google Street View with its full capture history — up to 20 years. AI analyzes each date and returns a structured monument-condition verdict. A printable field prep report covers the resolved coordinate, aerial tie overlay, monument classification history, and original GLO field notes.
Other PLSS States