Blog · September 30, 2026
What Is a Corner Record?
A corner record is a filed form or map in which a surveyor reports the condition of a public-land or other land corner and any accessories or new monument. It documents a corner. It does not subdivide land and it does not replace the plat of a lot.
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A file on one corner
Several states require surveyors who visit a section corner or another land corner to file a corner record, a land corner recordation certificate, or a similar sheet. The form describes what was found, what was set, the accessories, and a tie to a nearby location so the corner can be found again. It is a corner’s biography. It is not a boundary survey of your lot, even though your lot may depend on that corner if your parent tract is an aliquot. Reading the corner record tells you what the surveyor says is at the section corner. It does not tell you the bearings of your house lot unless your lot plat ties to that corner and you also have the lot plat.
How it relates to the GLO notes
The original field notes are the first biography. A modern corner record is a later chapter: found a stone flush with the ground, or found the corner lost and restored it by proportion, or set a new aluminum monument in place of a decaying post. Those statements are opinions under the surveyor’s license, and a later record may disagree. Read them in date order. Do not dig up the monument to see if the form was right. The form’s purpose is to keep the monument in the ground and make the next visit shorter. A phone GPS coordinate on the form, if one is listed, is an aid to searching, usually not the definition of the corner. The monument and the ties define it. A consumer GPS will not hold the coordinate well enough to judge the form wrong.
Where you get it and what you do not do
Corner records live with the county surveyor, the recorder, or another office the state names. Practices differ, so the citation on a survey is your guide. County tax GIS sometimes plots a coordinate a corner record published. That symbol can be useful and can be a rough conversion. It is not the corner record and not a survey you can fence to. Platbookmapper does not collect corner records. It links to the county parcel viewer. Use the viewer to see the neighborhood, then read the record itself. If two corner records set two different caps, you have a pincushion or a rejected monument story. Leave both caps. A surveyor sorts them. Moving either one destroys evidence the forms were written to preserve.
What to do next
- Match the corner record to the corner it names, such as the northeast corner of a section.
- Read found and set, and the date.
- Use it beside the original notes, not instead of your lot plat.
- Do not remove a monument a corner record describes.
The mix-up to avoid
Treating a corner record’s sketch as a survey of the whole farm. The sketch ties one corner. The farm boundary is in the deeds and the plats that cite that corner and the others.
Questions people ask
Does every monument have a corner record?
No. Requirements are limited by state and by the type of corner, and many older monuments were visited before filing existed. Silence in the file can mean nobody has filed, not that the corner is gone.
If the corner record gives a latitude, can I navigate to it?
You can get to the neighborhood. A phone is not a survey and will not put you on the cap. The ties to durable nearby objects are often more useful than the coordinate, and they still need to be read by someone who can measure them.
Find the county map
Open Platbookmapper and pick the county that taxes the land. Use that viewer to get the parcel id, then match it to the recorded plat if you need the easements and lot numbers.
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey.