A more thorough explanation:

An agreed boundary is a boundary that has been mutually agreed upon by neighboring property owners. It is a legally binding agreement that defines the exact location of the boundary line between two properties.

For example, if two neighbors are unsure about the exact location of their property line, they may hire a surveyor to determine the boundary. Once the survey is complete, the neighbors can come to an agreement on the exact location of the boundary line and sign a legal document, such as a boundary agreement or deed, to establish the agreed boundary.

Another example is when a property owner wants to build a fence or make improvements near the boundary line. They may need to obtain permission from their neighbor and establish an agreed boundary to ensure that the improvements do not encroach on the neighbor's property.

Overall, an agreed boundary is an important legal tool that helps property owners avoid disputes and maintain clear boundaries between their properties.