What is an example of an encroachment?

Encroachment refers to a situation where a property owner violates the property rights of their neighbor by building or using part of their land without permission. In this case, the act of a homeowner paving part of a neighbor's land clearly exemplifies encroachment. It illustrates the definition because it involves one property owner extending their use of land into another’s property area without consent, effectively infringing upon the rights of the neighbor and potentially causing disputes over property boundaries.

The other options provide different contexts. Constructing a fence on a property line could indicate a boundary dispute but does not necessarily describe an encroachment if it is done on the owner's own property or directly on the boundary in line with local laws. A formal easement agreement represents a legal arrangement allowing one property owner specific rights over another’s property, and therefore does not qualify as an encroachment as it is legally sanctioned. Lastly, a blockage of a public road by private property is more related to public access issues rather than personal property disputes, which further distinguishes it from the scenario of encroachment.