I have recently discovered that my neighbours concrete Slab has come over about 300mm onto my side of the property. They poured the slab a few years ago when our boundary fence at the time was made up of bushes tangled between an old chain link fence. Now that it has all been removed and the boundary line re-established. The offending part of the slab (about 300mm high x 1900mm long) is in the way of putting in a nice straight colourbond fence. Building over the concrete slab is not an option I want to take either.
I am paying for the entire fence build (approx 35 metres).
My question is: Can I cut that piece of slab off without needing to ask them, assuming it isn't going to cost me much extra to do? Or if it is a costly exercise can I ask the neighbours to pay for it?