The physical markers that define property corners. In boundary law they generally outrank the
measurements written on the deed, which surprises most people.
A found monument gets cleaned off, described and tied in before anything new is set.
A set corner is usually a steel rebar with a stamped cap at grade. The punch mark at the centre of that cap is the corner itself.
Why monuments beat measurements
If a deed says a line runs 210.00 feet to an iron pin, and the pin is actually at
210.35 feet, the pin usually controls. The monument is where the original surveyor physically put the
corner. The distance is a description of it.
The logic is that people rely on what is on the ground. Fences get built to pins, buildings get
placed off them, and generations treat them as the boundary. Honoring the monument protects what
everybody actually relied on. It is also why disturbing or removing a survey monument is a serious
matter rather than a nuisance.
Common types
Iron rod or rebar, usually with a plastic or aluminum cap carrying the setting
surveyor's license number. The modern standard.
Iron pipe, common in older work.
Concrete monument, often at section corners or major boundaries.
Stone, in very old work, sometimes with chiseled marks.
Bearing trees, blazed and scribed in original government surveys. Rarely
survive, occasionally do.
Nails and washers in pavement, for corners falling in a road or drive.
Finding yours
Start from the plat or description to know roughly where corners should be.
Look where lines intersect. Fence corners, hedge lines, changes in mowing
pattern.
Probe. Pins are often a few inches below grade after decades of soil
accumulation.
Use a magnetic locator if you can borrow one. Iron pins are easy to find with
one and effectively invisible without.
Check the cap. The license number tells you who set it, which lets you find the
corresponding record.
Do not assume every metal object is a corner. Old fence posts, scrap and utility
markers get mistaken for monuments constantly. A capped rod set by a licensed surveyor is evidence.
A random piece of rebar is not.
If your corners are gone
Common, and not a crisis. Pins get pulled during construction, buried under fill, plowed out or
removed by people who did not know what they were.
A surveyor re-establishes them from record evidence, surrounding monuments and occupation evidence.
That is more work than recovering an existing pin, which is part of why survey costs vary so much
between properties.
Once new corners are set, consider marking them visibly with a post or flag so they do not vanish
again. And record the survey if it is not automatically filed. See
Missouri survey records.
Springfield Land Surveyor is a referral service. We are not a surveying
firm, we hold no Missouri land surveying license or corporate certificate of authority, and we do not
perform survey work. We connect property owners with Missouri-licensed Professional Land Surveyors.
