A measured target, not maximum lift
The survey sets how much of the difference can safely be recovered. Chasing a perfectly flat reading on a brick slab home usually creates new cracks.
Leveling is the part people picture: the house comes back up. Done properly it is a slow, measured lift spread across many supports, checked as it goes, and stopped at the point where more would do damage rather than good.
How much lift is possible depends on the house. A flexible pier-and-beam structure tolerates more movement than a rigid slab with tile floors and brick veneer, where pushing too far cracks more than it closes. The target is not a perfectly flat floor, it is a stable house with the worst of the difference taken out.

The lift is the last step, not the first. Everything below happens around it so that the house stays where you put it.
The survey sets how much of the difference can safely be recovered. Chasing a perfectly flat reading on a brick slab home usually creates new cracks.
Position and spacing come from the readings. The lift only works if the supports are carrying the structure where it actually needs carrying.
The house comes up a little at a time across all supports together, so loads redistribute gradually instead of hinging at one point.
Elevations are taken again as work proceeds so the crew can see what is moving and stop before something is overstressed.
Lifting a slab moves the pipes through it. Where the movement has been significant, testing the lines afterwards is a reasonable precaution.
You should be told what was achieved in numbers, what was deliberately left, and what cosmetic work remains.
Sometimes the honest answer is a partial lift: take out enough that the doors work and the movement stops, and leave the rest. That usually costs less and risks less than insisting on a flat floor. On an older pier-and-beam house more can typically be recovered than on a rigid slab.
What the house is lifted on matters too, which is where pressed concrete pilings and steel piers differ, and how supports are placed decides whether the lift holds.
Start with the elevation survey, or see how this works at properties in Benbrook and across the wider service area.
Rarely perfectly, and that is normal. Most houses are lifted back to within a tolerance where doors close, the movement stops and the structure is stable, not to a dead-flat floor. Rigid brick and tile homes tolerate less correction than timber-framed ones. Ask the provider for the achievable target from the readings before work is agreed, so there is no argument about it afterwards.
It can, which is why it is planned for. Lines running through a slab move with it, and older cast-iron drains in mid-century homes are brittle enough that they sometimes crack. Where the lift is substantial or the house is older, testing the lines afterwards is sensible. Ask up front whether a test is included and what happens if a line has failed.
Usually yes. Perimeter work happens outside and most households carry on normally, with some noise and equipment around the house. Interior work means opening sections of floor, which is more disruptive in those rooms. Ask the provider which parts of the house will be affected and for roughly how long before scheduling.
Find out how far off level the house is before deciding how far to lift it.