Find Your Property Lines
Iron stakes mark property lines in most communities. They're typically located at corners and places where property lines meet. To get started, request a plot plan from city hall. You may be able to find the stakes by dragging a rake over the suspected location. But more likely, the stakes will be several inches underground. In that case, your best bet is to buy or rent a metal detector (inexpensive ones cost less than $40). When you've found your target, dig to make sure that it's really a stake and not just a lost quarter.
If Branches Extend Past Property Line
By law, you have the right to trim branches and limbs that extend past the property line, according to FindLaw. Learn these tree pruning techniques so you don’t create more problems for the tree.