Addition to existing walk out
 

Ok, I've got this existing house, circa 1950's...was moved from original site to new location on new concrete walk-out foundation...On the side of the addition the foundation at tie in protrudes about 2 feet above grade and grade drops about 4 feet over the expanse of the addition...walk-out not an issue.

I'm not wanting to pour a new basement just a foundation with crawl space...Should I have an escavator build up the existing grade then dig footings, or skip the build up and opt to pour the deeper wall?

Thanks

The footings need to be below the frostline. Pour the footings and foundation first. You can backfill later if you like that look.
Ron