There are a few ways to determine the easement area of your property.
Review the deed to the property which can be obtained from the county clerk or recorder. The easements will be explained in the legal description of the property.
Contact the zoning or mapping department for your county or city. These departments are in charge of keeping records of surveys and plot maps and can help provide information about an easement on your property.
Reach out to the utility company — or any entity with easement rights — to request the easement information regarding a certain property.
Contact a title insurance company, or private title searcher, they can be hired to perform a search for easements. They are often able to provide a comprehensive report for a fee.