Blog · September 28, 2026
What to Record Before You Call the Assessor Map Wrong
A mismatch is usually the GPS, the fence, or both.
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Why this comes up
A mismatch is usually the GPS, the fence, or both. Write down the waypoint, the plat call, and the monument you did or did not find. Then ask the county map, not the other way around.
What to check on the map first
County GIS lines are assessment maps. They are not a survey, and a product will not redraw them.
Open Platbookmapper and choose the state. The directory sends you to the county viewer. Match the parcel ID before you trust a pin on an aerial photo.
A tool that matches the job
Shop the Garmin GPS when that is the job in front of you. Write down the waypoint, the plat call, and the monument you did or did not find. Then ask the county map, not the other way around.
The limit
A handheld GPS gets you back to the truck. It is often several meters off, so it cannot tell you where the legal line is.
The county viewer is the map. The product is only the tool you carry.
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey.