If someone starts building on my land without permission, what immediate steps should I take to stop an adverse possession claim?
If someone starts building on your land without permission, you don’t wait and hope it sorts itself out. You shut it down quickly and clearly. Adverse possession only becomes a threat when the true owner stays silent long enough that the law starts treating the trespasser like they might be the rightful owner. Your job is to break that silence right away.
Here’s what most real estate pros and attorneys will tell you to do immediately, in plain English:
Give written notice to stop
A polite conversation is fine, but it’s not enough. You want something dated and in writing that says, “You’re on my property without permission. Stop immediately.” That alone interrupts any adverse possession timeline.
Mark the boundary so there’s no confusion
Put up stakes, flags, a temporary fence, or signage. Adverse possession requires “open and notorious” use. When you make the boundary obvious, you cut off the argument that they “thought it was theirs.”
Get a survey if the line is even a little fuzzy
A licensed surveyor gives you a legally defensible map. If the other party tries to argue, you’ve got professional documentation showing exactly where the line is.
Document everything
Photos, videos, dates, conversations, letters. If things escalate, this becomes your evidence trail.
Have an attorney send a cease‑and‑desist if they ignore you
A letter from counsel carries weight. It shows you’re actively asserting your rights, which is the opposite of what adverse possession requires.
If needed, file for trespass or an injunction
Courts can order them to stop construction immediately. You’re not being dramatic here. You’re protecting your property before the situation snowballs.
The big idea is simple: adverse possession only works when the true owner does nothing. The moment you assert ownership, give notice, or grant (or deny) permission, the clock stops cold.
Disclaimer: I don’t provide legal advice. For any situation involving property rights or potential adverse possession, always consult a qualified attorney who can guide you based on your specific facts and local laws.