Most homeowners pay $650–$1,900 to mudjack a sunken slab, with a national average of about $1,235. Contractors typically charge $3–$8 per sq. ft., and many have a minimum charge of about $500; polyurethane foam lifting costs more, about $5–$25 per sq. ft. (Angi, HomeGuide and Fixr data, as of October 2026).
Updated October 8, 2026. Source: Angi + 3 more. National US estimates.
Mudjacking (also called slabjacking) fixes driveways, sidewalks, patios, garage floors and pool decks that have sunk or tilted because the soil underneath washed out or compacted. The crew drills small holes, pumps a cement-based slurry under the slab and raises it back to level, usually in a few hours.
It costs a fraction of tearing out and repouring concrete, but it only works on slabs that are still in one piece. This guide covers prices by project and slab size, mudjacking versus foam, and how to compare quotes. If the sinking involves the house itself, read our slab foundation repair cost guide.
Average cost
Typical mudjacking prices from national cost guides, as of October 2026:
| Scenario | Typical range | Notes |
|---|---|---|
| Small job: one sidewalk or step-area slab (50–150 sq. ft.) | $300–$900 | Many contractors charge a minimum of about $500 |
| Typical job: patio, garage floor or part of a driveway | $650–$1,900 | National average about $1,235 |
| Large job: full driveway or pool deck (500–800 sq. ft.) | $2,000–$4,000 | Price per sq. ft. drops on bigger areas |
| Polyurethane foam lifting instead of slurry | $1,500–$5,000 | $5–$25 per sq. ft.; lighter fill, faster cure |
Mudjacking cost by project
| Project | Typical area | Cost range |
|---|---|---|
| Sidewalk | 50–150 sq. ft. | $300–$900 |
| Patio | 100–300 sq. ft. | $500–$1,500 |
| Garage floor | 150–400 sq. ft. | $700–$2,000 |
| Foundation or interior slab section | 200–800 sq. ft. | $700–$2,000 |
| Driveway | 200–600 sq. ft. | $800–$2,400 |
| Pool deck | 150–500 sq. ft. | $800–$2,500 |
Mudjacking cost by slab size
Small jobs cost more per square foot because setup and the crew's minimum charge are spread over less area.
| Area lifted | Total cost | Per sq. ft. |
|---|---|---|
| 50 sq. ft. | $600–$700 | $12–$14 |
| 100 sq. ft. | $700–$1,100 | $7–$11 |
| 250 sq. ft. | $1,200–$1,800 | $5–$7 |
| 500 sq. ft. | $2,000–$2,400 | $4–$5 |
| 800 sq. ft. | $2,800–$4,000 | $3.50–$5 |
Cost breakdown: materials, labor, permits and extras
Line-item estimate for mudjacking two sunken driveway slabs, about 250 sq. ft., and sealing the cracks and joints. Ranges are national, as of October 8, 2026.
| Cost item | Typical range | What it covers |
|---|---|---|
| Slurry materials | $100–$400 | Sand, soil, cement and water mix |
| Labor and equipment | $500–$1,000 | Drilling, pumping, lifting and patching holes; crews bill about $45–$70 per hour or a flat fee |
| Crack repair and sealing | $100–$400 | Sealing cracks and joints so water can't wash out the new fill |
| Contingency (about 10%) | $50–$200 | Larger voids that take more slurry |
| Estimated total | $750–$2,000 | Before any discounts or rebates |
Permits are rarely needed for mudjacking. Most of the price is the crew's time and equipment, which is why small jobs cost more per square foot.
What affects the price
- Slab area and thickness. Area is the biggest cost driver: Angi reports $600–$700 for a 50 sq. ft. slab and $2,800–$4,000 for 800 sq. ft. Fixr notes mudjacking suits slabs roughly 3–6 inches thick; thicker slabs are better lifted with foam.
- Material used (cement slurry or polyurethane foam). Cement slurry is the cheapest at about $3–$8 per sq. ft.; polyurethane foam costs about $5–$25 per sq. ft. but weighs less, needs smaller holes and is ready to use within about an hour instead of 24–72 hours.
- Size of the voids. Bigger voids under the slab take more material and pumping time. If soil keeps washing out, contractors may suggest soil stabilization ($500–$2,000) or drainage improvements ($300–$1,000) as add-ons.
- Access to the slab. Hard-to-reach slabs, such as a backyard patio far from the driveway, raise labor costs. Fixr notes extra charges when the pump has to run more than about 200–250 feet, and clearing shrubs or rocks can add to the bill.
- Number of slabs. Lifting several slabs in one visit lowers the cost per square foot because the crew sets up once. A multi-slab driveway with tight access still costs more than a single sidewalk panel.
Ways to save
- Bundle every sunken slab on the property into one visit: the walkway, the patio and the garage apron. Many crews have a minimum charge of about $500, so small separate jobs are expensive.
- Choose slurry over foam for driveways, sidewalks and patios that just need a lift; save foam for load-bearing or thicker slabs.
- Fix the water source first. Redirect downspouts and seal joints so the soil under the slab doesn't wash out again.
- Compare mudjacking with replacement only when the slab is broken. Fixr reports new slabs cost 50%–70% more than leveling.
- Get at least three written quotes that state the area to be lifted, the material and any warranty on settlement.
How to get an accurate quote
Ask at least three local concrete leveling contractors for written quotes after they see the slab. Give each the same information:
- Which slabs have sunk, their approximate size in square feet and how far they have dropped.
- Photos of cracks, gaps along the house and where downspouts discharge.
- Access details: distance from the street or driveway, gates, steps and landscaping in the way.
- Ask whether the price includes patching the holes, crack and joint sealing, cleanup and any warranty against resettling.
FAQ
How long does mudjacking last?
Angi reports results can last many years, even decades, when the soil under the slab is stable. If water keeps eroding the soil, the slab can settle again and need to be re-lifted, which Angi puts at about $300–$800.
Is mudjacking cheaper than replacing concrete?
Yes. Angi says mudjacking typically costs about a third to half the price of replacement, and Fixr reports new slabs cost 50%–70% more than leveling.
Can I mudjack a slab myself?
Angi estimates DIY equipment, materials and safety gear at about $500–$1,200, close to the price of hiring a crew for a typical job. Professionals also know how to lift evenly without cracking the slab.
For the big picture, start with our complete foundation repair cost guide.
Related cost guides
Sources
- Angi — How Much Does Mudjacking Cost? [2026 Data] (updated Aug 31, 2026). Checked October 8, 2026.
- Angi — What Is Mudjacking? Pros, Cons, and Costs (updated Jul 8, 2026). Checked October 8, 2026.
- HomeGuide — How Much Does Cracked Slab Foundation Repair Cost? (2026) (Mar 7, 2026). Checked October 8, 2026.
- Fixr — Concrete Leveling Cost (updated Jan 31, 2025). Checked October 8, 2026.
Prices are estimates and vary by location and provider. See our methodology and editorial policy. Browse all foundation & water cost guides.