What is mainly established through property surveys regarding boundaries?

The primary purpose of property surveys is to establish the lengths and directions of boundary lines. This is crucial for determining the exact location of property lines, which helps in legal matters, development planning, and ensuring compliance with local zoning laws. Boundary surveys provide precise measurements and documentation regarding where one property ends and another begins. This clarity is essential for property owners, developers, and legal entities to avoid disputes and ensure that developments adhere to the defined property limits. While other options involve important aspects of land use and planning, they do not relate directly to the core function of property surveys concerning property boundaries.