Someone Is Claiming Ownership of Part of My Land (Missouri)

What you should not do is panic, sign anything, or ignore it. Your first job is to confirm where the true line actually runs, understand exactly what your neighbor is claiming and why, and then choose the calmest response that protects your title. This guide walks you through that, step by step.

First, confirm where the true line is

Before you argue about anything, get the facts on the ground. A fence, a hedge, or someone's memory proves nothing about the legal boundary.

• Order a current survey. Hire a licensed Missouri land surveyor to locate your deed description on the ground, find or set the corner monuments, and stake the line. A stamped survey is the single most persuasive document you can carry into a conversation, mediation, or courtroom.
• Pull the deeds and legal descriptions. Read the legal description in your recorded deed, and get your neighbor's if you can. The survey turns those written descriptions into stakes you can see.
• Photograph and date everything. Once the line is flagged, photograph the disputed strip relative to the stakes and note the date. This record matters if the dispute ever turns on how long something has been there.

Sometimes the survey ends the fight — it shows the strip is plainly yours, or that your neighbor was simply mistaken. Get that answer before you concede an inch.

Understand what your neighbor is actually claiming

Your neighbor is almost certainly relying on one of a few Missouri doctrines. Knowing which one tells you how to defend.

• Adverse possession. This is the big one. A claimant who has occupied your strip for ten years in a way that is open, notorious, exclusive, hostile, and continuous can acquire title to it under RSMo § 516.010. "Hostile" doesn't mean angry — it means without your permission. The catch for your neighbor: if even one of those five elements is missing for any part of the full ten years, the claim generally fails. There is no partial credit.
• Boundary by acquiescence. If both sides treated a particular line — usually an old fence — as the boundary for a long period and went along with it, a court may fix that line as the legal boundary even without a complete adverse-possession showing.
• Boundary by agreement. If your predecessors were genuinely uncertain about the line and agreed on one, then marked and relied on it, that agreed line can become binding.

There's also a lesser cousin worth knowing. A prescriptive easement gives a neighbor only the right to use part of your land — a driveway, a path — not ownership of it, on a similar roughly ten-year period of open, adverse use. It's a smaller threat than losing title, but it still clouds your property.

Why the ten-year clock is your best friend here

The same ten-year rule your neighbor is leaning on is also your strongest defense — because every element has to hold for the entire decade.

• Was there ever permission? If you, or a prior owner, ever let the neighbor use the strip — even informally — the use was permissive, not hostile, and the clock never ran.
• Was the use exclusive? If you also mowed, gardened, or used the strip during those years, the neighbor's possession wasn't exclusive, and the claim weakens.
• Was it truly continuous? A real gap, a documented objection, or your own reentry during the ten years breaks continuity and resets the clock.

If any one of these is true for any stretch of the ten years, the claim usually collapses. This is exactly why the survey, your photos, and your memory of how the strip was actually used matter so much.

How to stop the clock and protect your title

If you're worried the ten years haven't fully run — or you simply want certainty — you have defensive tools you can use right now.

• Grant written permission. Of the five elements, hostile is the easiest to defeat. A short, dated, signed letter granting the neighbor revocable permission to keep using the strip for now makes the use permissive — which stops any adverse-possession or prescriptive-easement clock cold. Make clear it is not a transfer of any property right, and keep a copy.
• Record a boundary-line agreement. If you'd both rather have certainty than a fight, you can agree on the line in writing and record it with the county recorder. A recorded agreement binds future owners; an unrecorded handshake protects no one once either house sells.
• Send a written demand. If the neighbor won't back off, send a dated written demand that they stop claiming and using the strip. Even if ignored, that letter helps interrupt the "hostile" or "continuous" element and protects you.

Acting in writing, and dating it, is what keeps your options open. Silence is the one response that helps the other side.

Your options, from friendliest to firmest

You rarely need to leap straight to a lawsuit. Match your response to the situation and to a relationship you'll likely live next to for years.

• Talk it through with the survey in hand. Many neighbors genuinely believe the old line is the real one. A stamped survey takes the argument out of "he said, she said," and a lot of disputes end right here.
• Offer a recorded boundary agreement. If there's honest uncertainty, fixing and recording the line gives both of you permanent peace of mind.
• Grant revocable permission. If you're fine with the neighbor using the strip for now but want to kill any clock, the permission letter does that without a confrontation.
• Try mediation. A neutral mediator can often resolve a boundary dispute in a single sitting for a fraction of litigation's cost — and the relationship usually survives.
• File a quiet title action. When nothing else works, Missouri's quiet title action (RSMo § 527.150) asks a court to declare the true boundary and confirm the strip is yours. It is often paired with an ejectment/trespass action to recover possession. This is the last resort — slower and costlier — but it's there.

Frequently Asked Questions