I have a 10 foot easement at the end of my home property. I am assuming it is for utility purposes. However, the previous owner had already installed a shed 6 feet deep into this easement. Now, we want to build a garage, the city contends that we have to build outside the 10 foot easement. Can we dispute the easement and petition to remove part or all of it all together? how does that process work? is it a long process taking months and years ? is it an expensive undertaking?