Concrete & driveways · Costs, budgets and timelines · Updated November 2026
Concrete Leveling vs. Replacement
If a sidewalk, patio or garage slab has sunk but is still in one piece, leveling can lift it back into place for a fraction of the cost of replacement. Slabjacking typically costs $500–$1,300.
How leveling works
| Method | How it works | Notes |
|---|---|---|
| Mudjacking (slabjacking) | A cement-based slurry is pumped under the slab through drilled holes | Larger holes; heavier material |
| Polyurethane foam | Expanding foam is injected through small holes | Smaller holes; lightweight; usually costs more per job |
Slabjacking or mudjacking runs $500–$1,300 for a typical sunken patio or garage slab, according to our foundation repair cost guide.
Leveling works best when
- The slab has sunk but is not badly broken.
- The cause (washed-out soil, poor compaction) has stopped or can be fixed.
- You want a quick fix; leveled slabs can often be used the same day.
Replace instead when
- The slab is broken into many pieces or crumbling.
- Tree roots are lifting it.
- You want to change the size, shape or finish.
If a slab next to the house keeps sinking, or you see cracks in the foundation itself, have it evaluated; see foundation cracks getting bigger.