Look for sick trees. Elm trees are commonly afflicted with Dutch elm disease. As its name implies, the disease only affects elm trees, so if you see a tree with the symptoms of Dutch elm disease, you can safely conclude it is an elm.
1 The cost of repairing a fence is going to depend on the fence height, length, the materials, complexity of the installation, and type of repairs that need to be performed. 2  To give you an idea on what you are probably going to have to pay, plan on spending anywhere from $8 to $18 per linear foot for wood fence repair.
1 For details, see How Much Does a Vinyl Fence Cost.  Materials for a wrought iron-style fence made of steel or aluminum can cost $20-$100 or more a linear foot; a DIY 100' fence with a basic walk-in gate can cost $2,500-$11,000 or more.