I want to install a new decked area this coming spring that will
replace part of an existing lawn. I don't want to have to step up onto
it so would like to build it so that it sits completely flush with the
adjacent lawned area. My guess is that I will need to excavate to a
certain depth, pour footings and then backfill with gravel over a
weed-proof membrane. Any thoughts or suggestions re things I might be
missing?

thank you

c