Learn how property lines and parcel data actually work
Practical, plain English guides for researching land in the United States. Written for homeowners, buyers, and the curious.
How to Find Property Lines
Practical ways to locate approximate property boundaries using maps, deeds, and GPS.
Read guide →BasicsWhat Is a Parcel Map?
Understand what parcel maps show, where county data comes from, and how to read them.
Read guide →APNHow to Look Up an APN Number
Find a property's Assessor Parcel Number and what each segment of an APN means.
Read guide →CompareProperty Line App vs Land Survey
When a parcel app is enough, and when you need a licensed surveyor.
Read guide →MeasureHow to Measure Lot Size Online
Quick methods to estimate acreage and lot dimensions before visiting a property.
Read guide →OwnershipHow to Find Land Owner Information
Where public records live and what land ownership data is generally available.
Read guide →Buying LandChecking Property Boundaries Before Buying
Boundary checks every land buyer should run before making an offer.
Read guide →DataHow County Parcel Data Works
Why parcel data varies by county and what that means for accuracy.
Read guide →Educational content only. Parcel data varies by county and is not a substitute for a licensed survey.