Joseph Meehan wrote:

You need to contact a local attorney. In many areas if a neighbor has
used the property as his own and cared for it, after a given time (usually X
number of years) and the owner has not raised an objection, the neighbor
actually can claim legal title to it. If that is the case, your fence may
now be illegal as most areas require a set back from the property line.



I suspect that if you do end up bringing a legal action you will learn
what the term "de minimus" means. The court might very likely say that
six inches on the "other side" of your fence isn't significant enough to
be considered damaging to you, compared to what it would take for the
neighbor to remove that strip of concrete.

Jeff

--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
The speed of light is 1.8*10^12 furlongs per fortnight.