Before I price a block foundation, I ask whether the house or the lot has had any water trouble in the past. That answer shapes how the wall is reinforced and what coating goes on the outside, so I'd much rather hear it at the start than learn it once the hole is open.
Backfill is the hardest moment in a block wall's life, because the soil pushes on it before anything holds the top in place. We either wait for the floor framing to go in, which ties the top of the wall to the house, or we brace the wall until then. During backfill we keep heavy machines back from the wall so their weight doesn't add to the soil pressing on it.
Once the foundation is backfilled, many homeowners turn to what goes around the house. Our crew handles walkway construction to the new doors, and the same block and mortar skills go into outdoor kitchen masonry on a new patio, so you can plan the outside work with a contractor who already knows the site.