Watching a house rise off its foundation looks like magic. It is actually a very methodical process with a lot of preparation on either side of it.
Step 1 — Survey and target elevation
A surveyor establishes base flood elevation and the current elevation of the lowest floor. Local freeboard rules usually require BFE plus one or two feet, and that sets the target height.
Step 2 — Engineering and permits
A structural engineer designs the new foundation — reinforced concrete piers or a poured stem wall — sized for the loads and the new height. Plans go through floodplain review and permitting with the City of Houston or Harris County. Expect six to twelve weeks here.
Step 3 — Utility disconnect
Water, sewer, gas, and electric are disconnected and capped by licensed trades. Nothing gets stretched; everything gets rebuilt at the new height later.
Step 4 — Beams and cribbing
Crews cut access openings, then slide steel main beams under the structure perpendicular to the floor joists, with cross beams above them. Cribbing — stacked timber towers — goes in with hydraulic jacks between the cribbing and the beams.
Step 5 — The lift
A unified hydraulic jacking system raises every jack simultaneously so the whole structure moves as one piece, often just a fraction of an inch at a time. As the house rises, more cribbing is stacked underneath to catch it. Reaching full height typically takes one to three days.
Step 6 — New foundation
With the house held on cribbing, the old foundation is removed or repurposed and the new piers or stem wall are formed, reinforced, and poured. Concrete cures, then the house is lowered onto it and mechanically anchored.
Step 7 — Reconnect and finish
New water, sewer, gas, and electrical risers are run and inspected. Stairs, landings, and rails are built to code. Skirting goes on with FEMA-compliant flood vents. A surveyor issues the new elevation certificate — the document that proves the work and resets your insurance rating.
What surprises people
How little the inside changes. On a properly executed unified lift, interior damage is usually limited to minor drywall cracks. The dramatic part is all happening under the floor.
