The short answer
House leveling means raising the low parts of a house back toward level. On a slab, that’s done by installing piers under the settled beams and jacking from them. On a pier and beam house, it’s done from the crawl space with jacks, shims and sometimes new piers. Either way, the realistic goal is “close enough that doors work, cracks stop growing and the floor feels right”, and the ASCE Texas guidelines say plainly that perfection is not attainable by remedial measures.
Signs leveling is worth considering
Leveling tends to be worth pricing when you see:
- doors that won’t latch, or that have already been trimmed once;
- cracks that have widened since you marked and dated them;
- a slope you can feel crossing a room, or bookcases that lean away from the wall;
- gaps opening where walls meet ceilings, or at the frieze board outside.
It’s often not worth it when hairline cracks haven’t changed through a full year of seasons, when the slope was noted at purchase and hasn’t grown, or when cracks open every late summer and close by spring. That last pattern is the clay drying and rewetting, and steadier moisture around the house may do more than a lift.
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What “level” can mean
Engineers judge a foundation by tilt (how much the whole house leans) and deflection (how much the floor bows between two points). The Foundation Performance Association recommends keeping tilt to 1% or less, and ASCE Texas says a tilt over 1% is usually noticeable. Those are guidelines for judging a house, not promises a contractor can make about where a lift will end.
There is also no state rulebook for how repairs are done. Asked about residential repair methods, the Texas Board of Professional Engineers said its act sets no technical standards for them. That leaves the target to the plan, and to the engineer if one designs it. ASCE Texas calls the engineer who seals the repair documents the engineer of record, with authority over changes.
So ask each contractor: what readings are you aiming for, where will the house still be out of level afterward, and why?
Lift, stabilize, or leave it
| Option | What it does | When it fits | What to watch |
|---|---|---|---|
| Full lift | Piers or shims, then jacking until the readings meet the target | Recent movement; doors, windows or plumbing affected | More new cosmetic cracks; plumbing stress |
| Partial lift | Lifts the worst area part of the way | Old movement in a house whose framing has adjusted | Leaves some slope by design; get the target in writing |
| Stabilize only | Piers installed to stop further settlement, with little or no lift | A settled area that’s livable but still sinking | Floors stay as they are |
| Cosmetic repairs and monitoring | Patch cracks, adjust doors, take a second survey later | Minor movement that may already have stopped | Needs a follow-up survey to confirm |
The last row is a legitimate choice. ASCE Texas notes that an owner may reasonably choose cosmetic repairs instead of underpinning, and a second survey six to twelve months later shows whether the house is still moving.
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What happens during a lift
On a slab, the crew digs at each pier location, installs the piers, then sets jacks on them and raises the beam in stages, often several jacks at once so one corner doesn’t twist the house. Someone inside watches doors, windows and the elevation readings as it goes. When the readings reach the target or the house starts to resist, the crew locks the piers off with shims or caps and backfills.
On a pier and beam house, jacks go under the beams in the crawl space, and the house is raised and re-shimmed one line of piers at a time.
What can crack during a lift
A house that has been out of level for years has adjusted to it. Moving it back puts strain in new places:
- Drywall and plaster: new hairline cracks, often at door corners. Old cracks may close.
- Tile and stone: grout and tile can crack over a moving joint.
- Doors and windows: some that worked before may stick, and some that stuck may work.
- Plumbing: drain lines under a slab can be stressed. Ask whether a plumbing test is done before and after.
- Exterior: brick cracks may close or shift; trim may need re-nailing.
Ask before you sign who pays for each of these. Many plans exclude cosmetic repairs; better to know that now.
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West-side houses and hillside lots
On the west side of Austin and in parts of Cedar Park and Leander, houses on sloping lots often sit partly on cut rock and partly on fill. When the fill settles, the house tilts toward the downhill side. Leveling there may mean piers on the fill side only, down to the rock, with little or nothing on the uphill side. The geology guide explains why the ground changes so quickly across town.
What leveling typically costs
| Job | Typical cost | Source |
|---|---|---|
| Leveling with shims | $1,000–$3,500 | HomeGuide |
| Re-shimming a pier and beam house, average | $1,600 | Angi |
| Repairs for settling or sinking | $4,500–$20,000 | HomeGuide |
| Lifting and leveling, high end | Up to $23,000 | This Old House |
| Piers | $1,000–$3,000 per pier | HomeAdvisor |
The cost page explains what drives the pier count, which is most of the price on a slab.
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After the lift
- Get the after-lift readings in writing, next to the before readings.
- Fix drainage before the next big rain. The Foundation Performance Association says improper drainage can cause continued movement of a repaired slab.
- Keep watering even through a drought, following your water utility’s rules. The drainage and watering page covers Austin’s.
- Wait a few months before redoing drywall and paint; let the house settle onto its new supports first.
- Keep the plan, readings, permit and warranty together. A buyer will ask for them.