Hello forum, I got a call today to do a spring clean up on a yard for one townhouse. The turf area is roughly 900 square feet. In the backyard, 800 square feet of the entire turf is completely taken over by weeds. I mean literally, there wasn't one blade of grass visible. So, I am asking for your suggestions on how to renovate this yard. I was thinking of cutting all the grass, then rake up all debris, then lay down fresh sod. Do I need to till the ground before laying sod? I have installed a few pieces of sod before but it was a new installation. Sorry if this is an elementary dumb question but I really need to know. Thanks for your help.