I live in Midwest in a townhouse. Having problems with new neighbors dogs crapping in yard. Planning to surround yard with 5ft chainlink fence and also cementing the encased area to use as patio with in-ground drain. There won't be any soil area left. In which order should these two tasks be done? Which contractors do i need, masonry or fencing company or both? The downspout is in the ground. Is there a way to tie a drainage system from cement pad into downspout? Area measures about 5x7ft.