landscape for habitat for humanity

i am a volunteer for williamson county habitat for humanity and do the landscaping for each house on a limited budget. since we live in a drought area and are limited on water usage and since the new homeowners are on a limited budget we try to to xeriscape as much as possible.
the funds raised will be used on the present location in jarrell texas.
it will be used for 6 pallets of grass, 8 yards of landscape mix, 4 yards of native hardwood mulch, 2 yards of garden soil, shrubs, and native grass seeds.