Many homeowners trust fences, old markers, or memory to mark property lines. Even a small mistake can cause disputes, fines, or the need to remove buildings. Survey boundary lines show exactly where your property ends, preventing problems before construction starts. For example, a misplaced fence or garage could result in legal action from a neighbor or require costly relocation. This clarity saves money and protects your investment. Knowing the exact limits also helps in planning renovations or additions without overstepping boundaries.