How to Find Your Property Lines
There are 7 free ways to find your property lines — starting with the deed and plat map you already own, your county's GIS portal, and the survey pins likely buried at your corners — before you pay $400–1,200 for a licensed survey. Here is each method, in the order worth trying.
1. Read your deed and plat map
Your deed contains the legal description of the parcel, and the recorded plat map draws it: every side's length and bearing, usually with distances from road centerlines and neighboring corners. Both are free — check your closing documents, or request copies from the county recorder. The plat's dimensions are the raw data every other free method builds on.
2. Check your county's GIS parcel viewer
Most US counties publish a free GIS map with parcel outlines overlaid on aerial imagery — search “[your county] GIS parcel viewer.” It shows your parcel's shape, dimensions, and neighbors at a glance. One caution: GIS parcel lines are drawn for tax purposes and can sit 5–50 feet off the true boundary, so treat them as a sketch, not a survey.
3. Find your survey pins
Licensed surveyors set iron pins or capped rebar at parcel corners, and on most platted lots they are still there — a few inches to a foot underground. Use the plat map to estimate where each corner should be, then sweep the area with an inexpensive metal detector. A found pin is the closest thing to ground truth you can get for free.
4. Measure from known reference points on satellite
This is where a satellite measuring tool fits in. It does not show parcel data or legal boundaries — no measuring app does that reliably — but it measures distances precisely, and that is exactly what the plat gives you. If the plat says your corner sits 150 ft from the road intersection, draw that line on the satellite view and see where it lands. Chain measurements corner to corner and you can sketch the whole boundary from recorded dimensions and visible references like pavement edges, found pins, and fence posts.
5. Pull the assessor's property records
Beyond the GIS map, the county assessor's record card for your parcel lists lot dimensions, acreage, and often scanned plats and past surveys. If a prior owner ever commissioned a survey, a copy may be on file with the recorder — a free stand-in for a new one, as long as nothing has changed since.
6. Agree on the line with your neighbor
Where records are old or corners are missing, adjoining owners can walk the line together and agree on where it runs — many states let a written, recorded boundary-line agreement make that permanent. It costs nothing but a conversation and beats litigating a fence line later. Put it in writing and record it; a handshake does not bind future buyers.
7. Hire a licensed surveyor
When you are building near a line, fencing a disputed edge, or buying unsurveyed land, hire a licensed land surveyor. They will research the records, find or reset the monuments, and stake the corners — and their stamped plat is the only version of your boundary that stands up for permits and in court. Everything above makes you an informed client; it does not replace this step.
Not a legal survey
Measurements are for planning and reference only. They are not legal land-survey records and cannot substitute for a survey by a licensed land surveyor.
Frequently asked questions
- Can Google Maps show property lines?
- Sometimes — at high zoom in some counties, Google displays thin gray parcel lines sourced from third-party county data. Coverage is spotty, the lines are approximate, and they disappear at many zoom levels, so never rely on them. Your county's own GIS parcel viewer is the safer free source for the same information.
- How do I find my property pins?
- Start from the plat map, which records the distance of each corner from road intersections and other corners. Measure those recorded distances from a known reference point using a satellite distance tool to get within a few feet of the expected spot, then sweep that area with a metal detector — pins are typically iron rods or capped rebar a few inches to a foot below the surface.
- How accurate are property line apps?
- Apps that overlay GIS parcel layers can be off by 5 to 50 feet, because county parcel maps are drawn for tax assessment, not boundary accuracy. They are fine for getting oriented on a large parcel, but never accurate enough for building, fencing, or settling a dispute. Only a survey by a licensed surveyor is authoritative.
- How much does a property survey cost?
- A residential boundary survey typically runs $400 to $1,200 as of 2026, depending on parcel size, terrain, and how well-documented the neighborhood's corners are. It is worth the cost any time you are building near a line, installing a fence on a disputed edge, or buying land without a recent survey on file.
- How do I find property lines for free?
- Work the free sources in order: pull the legal description and plat map from your deed, look the parcel up on your county assessor's GIS portal, and locate any survey pins at the corners. Then use a satellite distance tool to measure the plat's recorded dimensions from known reference points like road intersections and found pins to see roughly where each line runs.