We bought our first home, a semi detached property and moved in recently. There is a garden fence between my freeside and neighbour, which is erected by my seller. Our neighbour offered to replace the fence with solid wall as he is interested in building a lean to. We requested him to build the wall in his side of the property rather than to replace the fence. Later he claims that my seller has encroached his property and he wants us to move the fence by few inches. I feel that he should have raised this issue with the seller in the first place. Also I am gutted to lose the piece of land for no mistake of my own. How can I approach this? Should I involve the council? Do I need to speak to my solicitor? What could be the legal cost? Please advise.