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What evidence do I need for a property boundary dispute?

Updated July 1, 2026United States

Short answer

The strongest evidence is your property's legal description plus a professional survey: your deed and plat map, a current boundary survey by a licensed surveyor, any older surveys, and dated photos of markers, fences, structures, and any encroachment over time. Add records of how the land has actually been used and any agreements with your neighbor. Boundary law — including doctrines like adverse possession — varies significantly by state, so a licensed surveyor and your county land records are the place to start, and an attorney can tell you how your state's rules apply.

Boundary disputes are won on documents and survey lines, not on who's more certain. Gather the records first; the argument follows the evidence.

Step by step

  1. Pull your property records

    Start with your deed, the plat or subdivision map, and your title documents, and read the legal description of the lot. These define what you actually own, in the words that count.

  2. Get a professional boundary survey

    A licensed surveyor locates the true boundary and its markers on the ground. A current survey is usually the single most persuasive piece of evidence in a boundary dispute, so it's worth getting early.

  3. Document the physical situation, dated

    Photograph survey markers or monuments, fences, structures, and anything that appears to cross the line — dated, and from consistent angles. Older photos that show how long a fence or structure has been there can matter a great deal.

  4. Collect records from the county

    Your county recorder or land-records office holds deeds, prior surveys, and any easements recorded against the properties. These can reveal agreements or rights that affect the line.

  5. Record how the land has been used

    Note who has used, maintained, or fenced which areas, and for how long. Long-standing use is central to doctrines like adverse possession — whose requirements and time periods vary by state, so document the facts and let an attorney apply the rules.

  6. Keep communications and any agreements

    Save messages with your neighbor and any written boundary agreement or past acknowledgment of the line. A prior agreement can carry real weight, so don't let it live only in memory.

  7. Get advice on your state's doctrines

    Adverse possession, acquiescence, and prescriptive easements all vary by state. Once your evidence is gathered, an attorney can tell you which doctrines apply and how strong your position is.

Plain-English terms

Boundary / property line
The legal edge of your land, defined by your deed's legal description and located on the ground by a survey.
Survey / licensed surveyor
A professional measurement that establishes exactly where your boundaries are. Usually the decisive evidence in a boundary dispute.
Plat map
A recorded map showing the layout and boundaries of lots in a subdivision. It's a key record when checking a property line.
Encroachment
A structure or feature — a fence, shed, or driveway — that crosses from one property onto another. Documenting it, dated, is central to a boundary dispute.
Adverse possession
A doctrine where, under strict conditions, long, open, and continuous use of land can transfer ownership. The exact requirements and time periods vary widely by state.
Easement
A recorded or established right to use part of another's land for a purpose, such as access or utilities. An easement can affect where the practical boundary of use sits.

The tool for this

buildmyevidence

This guide tells you what to do. buildmyevidence does it with you — your survey, deed, dated photos of markers and encroachment, and every neighbor communication in one case file, ready for a surveyor or attorney. Every entry is dated for you.

  • Dated photos of markers, fences and any encroachment over time
  • Keep your deed, plat, survey and neighbor messages together
  • Export a complete, organized record for a surveyor or an attorney
See buildmyevidence

Related questions

This is general information to help you keep your own records — not legal advice. Boundary law and doctrines like adverse possession vary significantly by state — start with a licensed surveyor and your county land records, and speak with an attorney about how your state's rules apply.