When we had our foundation replaced, it took about two days to get all the equipment in place, but the actual jacking up of the house took about half an hour to lift the whole thing 4 feet.
Rather than traditional screw jacks, they used centrally- controlled hydraulic jacks so that the whole house lifted evenly, no cracking, no split beams, doors and windows still opened and closed normally, etc. Much faster and less disruptive than my previous experience of lifting a house with screw jacks, and well worth the cost of having a professional with the right tools.
The house was lifted on two steel I-beams supported near the ends, around 30-foot span between jacks.
While it was up in the air getting the new foundation poured, we took the opportunity to sister every floor joist whether it needed it or not -- how often do you get a chance to work under the floor with 4-foot clearance and no foundation walls in the way?