Blog · September 27, 2026
What Is a Lot Line
A lot line is the boundary of a lot as the plat or deed describes it.
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On a subdivision plat the lot line is the edge between two lots, or between a lot and the street right of way. It is a surveyed line, not the edge of the mowed grass.
On the recorded sheet
Front, side, and rear are labels for which edge faces the street or a neighbor. Corner lots have more than one frontage, and the plat or code decides which is which.
The mix-up to avoid
The painted line in a GIS viewer is a picture of that record. Measuring from a fence assumes the fence was built on the line.
Find the county map
Search the county on the Platbookmapper home page. The directory links to the official parcel viewer. It does not draw the lots, and the line on the screen is an assessment map, not a survey.
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.