What can I do to assure they are not so much above ground this is really going to effect the grass we want to plant.. any sujestions on how to rectify the situation.. Please Help..
The trees roots are higher then the walkway.. Should they replant the trees??

Actually, you don't want to mound dirt up around the tree. It can cause the trunk to rot.

You want the roots just barely under ground. It sounds like they are quite a ways above ground, which is not good. Maybe the planters assumed you would mound dirt around the tree, so they planted it like that to prevent rot?

I'd say call them up and have them fix it before the trees are settled in.