I need to call for a foundation inspection. When should I call?

We require a minimum of the following 3 inspections for foundations: 1. Footing - after excavation when the footing is formed and rebar installed 2.  Wall - After footing pour, and when foundation forms are in place and rebar is complete. 3. Backfill - After foundation is poured and damproofing is complete and prior to backfill.