Sometimes there aren’t any other options than to start over with fresh healthy grass and then maintain from there. Not many people want to hear that their yard is a hopeless case and needs to be totally replaced. But, truly, if there isn’t enough viable turf to regrow a yard in 2-3 years, it would cost you less to redo the yard with new sod than to try and grow it back over time. Not to mention that taking care of brand new sod is a so much easier for you with the right guidance and instruction.