A helpful guide
How much does slabjacking cost?
Understanding slabjacking costs
The short answer: it depends. Slabjacking costs vary widely based on what needs to be lifted, how much material it takes, access to the site, and the method used. This guide walks you through the key factors so you know what to expect, and what questions to ask as you talk to a slabjacking expert about an estimate.
If you have a sunken driveway, a tilting porch, an uneven garage floor, or a tripping-hazard on your sidewalk, you've probably already discovered that concrete replacement is expensive. Slabjacking -Â lifting and re-leveling settled concrete by injecting material underneath - is typically a fraction of the replacement cost. But "how much does slabjacking cost?" still isn't a simple answer.
Every project is different. The price on one neighbor's driveway repair may have almost nothing to do with what your patio will cost. This guide explains why, and gives you realistic ballpark ranges to work with as you research your options.
Slabjacking vs. Replacement: The Big Picture
Before diving into cost factors, it helps to understand the value proposition. Full concrete replacement typically runs $15+ per square foot, plus the cost of demolition, hauling, and re-curing time before you can use the surface. Slabjacking — whether traditional mudjacking or the more modern polyurethane method - is usually significantly less expensive, faster, and causes far less disruption to your property.
|
Factor |
Concrete Replacement |
Slabjacking (Poly) |
|
Typical cost relative to each other |
Highest |
Often 25–50% of replacement cost |
|
Curing / wait time |
Several days to weeks |
~30 minutes (poly cure time) |
|
Site disruption |
High — full demolition |
Minimal — small drill holes only |
|
Addresses root cause |
No (new slab will settle again) |
âś“ Fills voids, stabilizes soil |
|
Preserves landscaping |
âś— Often damaged |
âś“ Typically unaffected |
Key point: Even on the higher end of slabjacking estimates, most homeowners still come out well ahead compared to tearing out and pouring new concrete.
The Main Factors That Affect Slabjacking Cost
There is no flat "per square foot" price that applies across all slabjacking projects. The following factors each play a meaningful role in what a job will cost.
1. The Size of the Area Being Lifted
More concrete means more injection material and more labor time. A single 4-foot square sidewalk panel is a very different job than a 3-car garage floor or a long driveway with multiple settled sections. Area is one of the most straightforward cost drivers, but it's still not the whole story, since a small slab with severe settlement may require more material than a larger slab with minor settling.
Single sidewalk panel or step
$150 – $400
Typical range for a small, isolated settlement area
Driveway (partial section)
$400 – $1,200+
Varies significantly by number of slabs and severity
Full driveway or garage floor
$800 – $3,000+
Larger scope; multiple lift points and material volume
Porch, patio, or pool deck
$300 – $2,500+
Wide range based on square footage and access
These are rough illustrative ranges for general planning purposes only. Actual project costs require a site inspection and formal estimate.
2. The Severity and Depth of Settlement
A slab that has dropped half an inch requires less material to lift than one that has sunk 3–4 inches with a significant void underneath. The depth of settlement directly affects how much polyurethane foam or mudjacking slurry is needed - and material volume is a primary cost component. Deep settlement can also create more complex lift scenarios that require additional care and technique.
3. The Slabjacking Method: Polyurethane vs. Mudjacking
There are two primary methods used in the industry, and they come with different cost profiles:
|
Method |
Material |
Typical Cost Position |
Best For |
|
Mudjacking |
Cement/soil slurry |
Generally lower upfront cost |
Basic applications; older method |
|
Polyurethane (Poly) |
Expanding foam resin |
Higher material cost; longer-lasting results |
Most residential and commercial applications |
At 1-866-SLABJACK, we use polyurethane (poly) lifting as our primary method because it is lighter-weight, completely waterproof, cures in about 30 minutes, requires smaller drill holes, and is less likely to contribute to further settlement. While poly may carry a slightly higher material cost per project, many homeowners find it to be the better long-term value.
4. Number of Injection Points Required
Lifting a slab evenly and safely requires drilling multiple small holes at strategic locations. The number of injection points depends on the slab's size, shape, how it has settled, and what voids exist beneath it. More injection points mean more labor and more material. On a simple job with uniform settling, fewer points may be needed. On a complex slab with varied settlement across its surface, more points are required to ensure a safe, level result.
5. Access to the Work Area
Slabjacking equipment needs to get close to the work area. If a truck or hose reel can pull right up to a driveway slab, setup is fast and efficient. But if the area being repaired requires navigating through a fence gate, around landscaping, through a garage, or down a tight side yard - access adds time and complexity. Difficult access doesn't always add cost, but it can be a factor on some projects.
6. Condition of the Existing Concrete
Slabjacking works best on concrete that is structurally sound but has settled due to soil issues underneath. If the slab itself is cracked extensively, spalling, or deteriorating, that changes the scope. Severely damaged slabs may not be good candidates for lifting alone - or may require crack repair work in addition to lifting. The condition of your concrete is something our team assesses during the inspection before any work begins.
Common Project Types and What to Expect
SIDEWALK PANELS
One of the most common residential requests. Individual lifted or sunken panels are a straightforward application. Cost is primarily driven by how many panels need attention and how much settlement has occurred. Even a single raised sidewalk panel can be a liability, so prompt repair is worthwhile.Â
→ Read more about sidewalk slabjacking
DRIVEWAYS
Driveways are often composed of multiple individual slabs, and typically only one or two sections have settled meaningfully. The cost is proportional to which sections need lifting and how severe the drop is. Full-driveway projects are among the larger residential jobs we handle.
→ Read more about driveway slabjacking
GARAGE FLOORS
Garage floor settlement is extremely common in the Pacific Northwest due to our soil conditions and moisture. These projects vary based on how much of the floor has settled, whether there are significant voids underneath, and whether the perimeter or interior sections are affected. Garage floors are often very cost-effective to repair since they're easy to access.
→ Read more about garage floor slabjacking
ENTRY STEPS & PORCHES
Sunken or tilted front porches and entry steps are both a safety concern and a curb appeal issue. These can be some of the more technically precise lifts since alignment with the home's entry is important. Cost is typically modest unless the structure is large or has settled significantly.
→ Read more about porch slabjacking
POOL DECKS
Pool deck slabjacking requires care to maintain proper drainage slopes and alignment around the pool structure. Settlement around pools is common and can create both trip hazards and water drainage problems. Costs vary based on square footage and the number of settled sections.
→ Read more about pool deck slabjacking
BASEMENT FLOORS
Interior basement floor lifting requires bringing equipment inside or running hoses from outside. The scope depends on how much of the floor has settled and whether there are void spaces beneath. This is a specialty application that benefits from an experienced crew.
→ Read more about basement floor slabjacking
COMMERCIAL PROJECTS
Commercial slabjacking - warehouse floors, parking areas, loading docks, commercial walkways - is priced based on scope and scale. Large commercial projects are quoted individually and often require a more detailed site evaluation. Contact us directly to discuss commercial project needs.
→ Read more about commercial slabjacking projects
Why Getting a Specific Estimate Matters
You may have noticed that the ranges above are fairly wide - and that's intentional. A "typical driveway job" might be anywhere from $950 to $4,500+ depending on all the factors above. Online cost calculators and broad estimates can give you a general idea, but they simply can't replace an experienced eye on the actual project.
When our team comes out for an inspection, we evaluate:
- The exact area and number of slabs that need lifting
- How much the concrete has settled and the likely void size beneath
- The condition of the slab and whether it's a good candidate for lifting
- Access and any site-specific considerations
- Whether additional services like crack repair would be beneficial
Only then can we give you a real number that reflects your actual project — not an average from across thousands of different projects.
Homeowner tip: When comparing slabjacking quotes, make sure you're comparing the same scope and method. A mudjacking quote and a polyurethane quote for the same job will look different — and so will a quote that includes all settled sections versus one that only addresses a few obvious ones.
Is Slabjacking Worth It?
For most settled concrete situations, yes - by a significant margin. The typical homeowner saves thousands of dollars compared to full replacement, gets a durable long-term fix, and is back to using their driveway, patio, or walkway within the same day. With over 16 years of experience and more than 3.5 million pounds of concrete raised annually across Western Washington, our team has seen virtually every scenario. We can give you an honest assessment of whether slabjacking makes sense for your project - and if for some reason it doesn't, we'll tell you that too. Contact 1-866-SLABJACK for a specific estimate on your project and to see what advantages slabjacking can provide over complete concrete replacement.
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