I can hardly call it a dispute, because so far everyone is on really
friendly terms, but I just bought a house where the rear property line
touches two separate neighbors. Well, the rear property line runs
straight but the fence does a bit of a "jut" at one point, the result
of which is that the 2/3 of the fence that abuts Neighbor #1's property
is 2 feet on my side of the property line, and the 1/3 of the fence
that abuts Neighbor #2's property is 1 foot on his side of the property
line.

It appears that the previous owner of my property built the part of the
fence that abuts Neighbor #2, and I'm not sure who built the part of
the fence that abuts Neighbor #1 (they look like different fences).
We're in California, so I understand that adverse possession isn't much
of a concern because unless you paid the person's property taxes you
can't adversely possess, and we are only talking about a foot or two
anyway, so its not being used for anything but plants/trees.

My questions are, what rights/responsibilities do the various parties
have in moving the fence? Can Neighbor #2 simply move the fence? Would
I be legally obligated to pay for a portion of the new fence (I don't
really mind him moving the fence, I just don't particularly want to pay
for it). Keep in mind that the previous owner of my property
apparently built this fence on this other's guys property without his
permission.

Likewise, can I move the fence that abuts neighbor #1's property if I
pay for it? What if he's the one that built the fence?

In the end, I think everyone is friendly and its not going to be a big
deal, I just don't know what is customary in these kinds of situations
so I figure the law may be a good jumping off point.