Set a marble on your kitchen floor and let go. If it takes off toward the fridge, you've got a slope. Maybe the bedroom door won't stay shut anymore either, and you've stopped trying to fix it.
House leveling corrects the structure that's holding the floor up. It isn't self-leveling compound poured over the top, which just hides the slope and adds weight. We measure every room, then show you what changed.
The short answer
House leveling lifts and supports the structure under your floors to bring them back toward level. It's done with jacks and shims on raised homes and with piers on slabs. Most jobs take 1–3 days. Good crews lift slowly, fix the cause and give you before-and-after readings.
Signs your house needs leveling
Your house usually shows several of these at once. One alone might be nothing, but three or more is worth measuring:
- Floors that slope enough to feel underfoot
- Doors that swing on their own or won't latch
- Gaps between trim and walls or floors
- Cracks above door frames or at window corners
- Windows that stick or won't lock
- Cabinets pulling away from the wall
Here's a test you can do right now, with something from a kid's toy box:
- Set a marble on a hard floor.
- If it rolls the same way each time, that floor slopes.
- On a level floor, it stays put.
How house leveling works on each foundation type
House leveling works differently depending on what's under your home, so we start by figuring out which type you've got.
Pier and beam homes
We jack up the beams a little at a time and set steel shims on the piers. Failed piers get replaced. Our page on re-leveling an older raised home has more detail.
Slab homes
You can't shim a slab. It has to be lifted from below with piers, so we install those along the low sections, then raise it. Read more about lifting and stabilizing a slab.
Crawl space homes
These usually need new supports and sometimes new beams. Steel jacks on real footings replace old posts, then we bring the floor up. That falls under crawl space structural repair.
Foundation leveling, step by step
Foundation leveling takes five steps, and the first one matters the most. Without an elevation map, nobody can tell you how far you've got to go or how far you've come. Here's how our foundation leveling services go:
- Read the elevations. We measure each room and build a color map.
- Make a plan. We mark support points and decide how far each spot can safely move.
- Lift gradually. House foundation leveling is slow on purpose, with small steps and pauses.
- Read it again. We re-measure and put the two maps side by side.
- Handle cosmetic touch-ups. We go over any new cracks and how to patch them.
- A digital level reads the height of every room.
- The map shows which way the house has dropped.
- After the repair, the same readings show the change.
Can you level a house yourself?
You can, in the sense that bottle jacks and beams exist, but we don't recommend it. The honest answer to how to level a house is that lifting is the easy part. The hard part is not breaking a pipe, cracking a wall or overloading a beam you can't see the whole length of.
What you can do yourself is measure and document. Run the marble test, take photos of the cracks and write down the date. That gives anyone you hire something real to work with, and it could save you an unneeded job.
What good house levelers do differently
Good house levelers measure before and after, go slowly and fix the cause. That's most of the difference. Ask these questions when you're comparing house leveling services:
- Will you measure each room before you start, and again after?
- How much do you lift in one go?
- What caused the movement, and what will you do about it?
- Will I get the readings in writing?
Often the right job is house leveling and foundation repair together, since drainage, rot or bad soil caused the drop. A crew that skips that part leaves you doing it all again.
What it usually runs
Leveling a raised home usually runs $1,500–$6,000. Full house lifts run $20,000–$23,000. Those are typical ranges, and your exact price depends on what we find at the inspection. Here's more on house leveling cost by foundation type.
How far out of level you are, access and wood damage drive the number. A free inspection gets you the elevation map and a written price.
House leveling questions
How long does house leveling last?
Years to decades, depending on what's under the house. Slab homes on piers tend to hold longest. Pier and beam homes on clay may need adjusting every several years as the soil shifts. Keeping water away from the foundation is what stretches it out the most.
Will leveling crack my walls?
It can, a little. Lifting moves the framing, so some drywall cracks may appear while others close up. We lift slowly to keep it small and we tell you upfront. We take photos first, so everyone's clear on what was already there and what's new.
How long does house leveling take?
Most jobs take 1–3 days. It runs longer if we have to replace rotted wood or install a lot of piers. We don't rush, because going slowly is how you avoid cracks. Your written plan says how many days we expect to be there.
Can you level a 100-year-old house?
Yes, but gently. Old houses have settled into their shape, and plaster doesn't like to move. We often aim for better, not perfect, and may leave the last 1/2 inch alone. You'll see the readings and decide with us how far to go.
Is leveling a home worth it before selling?
It often is if a buyer's inspector would flag it. Leveling a home gives you readings and paperwork, which can calm a nervous buyer. If the slope is mild and stable, a written report might be enough. Get a number first, then compare it to what a buyer would ask for.
How do you level a floor in an old house?
Fix the structure first, then the surface. We find out what dropped, like a post, a beam or a joist, and lift or replace it from below. Self-leveling compound only hides the slope on top. It adds weight and doesn't do anything about why the floor went down.
Do house levelers fix the cause or just the symptoms?
Good ones fix both. Lifting a house without dealing with water, rot or bad soil means it'll drop again. Ask any contractor what caused the movement and what they'll do about it. If the answer's just more jacks and shims, that's only half the job.
What happens if you don't level a house?
Usually it gets worse slowly. Doors stick, cracks grow, plumbing gets stressed and windows may stop opening, which can be a safety issue. A small, stable slope might never need work. A slope that's growing every year costs more the longer it runs, so measure and track it.
Run into a term you don't know? This may help: foundation repair glossary.