Blog · September 27, 2026
What Is an Irregular Lot
An irregular lot has more than four sides, or sides that are not close to parallel, because of a curve, a creek, or a remainder.
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The plat numbers every corner and gives a bearing or a curve for each segment. You cannot assume the rear is the same length as the front.
On the recorded sheet
Area is computed from the closure, not from length times width. The acreage on the plat is the one to compare to the tax bill.
The mix-up to avoid
Irregular does not mean unbuildable. It means the envelope takes more work to draw.
Find the county map
Start at Platbookmapper, search the county, and open the local GIS link. Write down the parcel number before you compare the screen to a paper plat.
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.