A backyard fence can seem like a clear sign of where one property ends and another begins. But for many rowhouse owners that line may not be so simple. A land surveyor can help homeowners understand the actual boundary before they replace a fence, build a patio, or make changes near a neighbor's yard. The problem often starts with a small question: Who owns the fence between two homes? That question can quickly become a larger disagreement when both owners believe the fence belongs to them. In a city filled with older rowhouses and closely spaced lots, understanding the difference between a fence and a legal boundary matters. Why Shared Fences Create Confusion Picture two neighboring rowhouses with a wooden fence separating their backyards. One homeowner wants to replace the old boards. The other believes the fence sits partly on their land. Neither owner has a recent survey. The fence may have stood in the same place for decades. Previous owners may have repaired it, pain...