Final answer:
When Neighbor A built a fence 2 feet onto Owner B's property, it is considered an encroachment. This intrusion without permission can lead to legal disputes and should be addressed quickly to preserve property rights.
Step-by-step explanation:
Neighbor A built a fence 2 feet onto Owner B's property. This situation is best described as a case of encroachment. Encroachment occurs when one person builds a structure, like a fence, that intrudes onto another person's property without their permission.
This can sometimes lead to disputes between neighbors and may require legal resolution such as removal of the encroaching structure or, in some regions, could eventually lead to adverse possession if left uncorrected for a certain period of time.
It is important for property owners to address any potential encroachments promptly to protect their property rights.