I have a client that would like me to put in a new seed lawn. The lawn that is there now is very uneven and has very sandy soil. I had thought of putting a heavy layer of loam down over the lawn and reseed from there. But, now I realize that this might not be the best choice. I am concerned with changing the height of the lawn around patios and walkways. I am thinking of scraping the sod off with the bobcat, then adding my loam to amend and reseed from there. What do you think? Also, he would like to have irrigation put in. Should this be done after the lawn is established or can it be laid down before I seed. I have done a number of new lawn installs before but not a renovation like this. Thanks for any info.