I am ball-parking because he is giving you both lawns, the customer would appreciate if you itemize the list usually. You don't have to use the exact numbers, just make seem reasonable. But double material cost for plants and mulch is a good number to go by, as well as sod. I heard palm trees were easy, but I don't want to tell someone something I don't know for sure.
Good Luck with the Bid.
-Michael
