
Concrete Leveling & Slab Lifting in San Antonio is the fastest, most cost-effective way to fix sunken driveways, patios, and walkways without tearing out and replacing the entire slab. San Antonio's expansive clay soils, especially on the east and south sides, shrink during drought and swell after heavy rain, causing concrete to settle unevenly and create trip hazards. Whether you own a 1950s brick ranch in the Northeast side with a long single-lane driveway, a Monte Vista craftsman home with a front walk, or a newer Stone Oak residence with a three-car garage approach, soil movement is part of life here. Lifting and leveling restores safety and usability in hours, not days, and costs far less than full replacement. We inject expanding foam or cement slurry beneath the settled slab, raise it back to level, and compact the soil underneath so it stays put.
Why Concrete Leveling & Slab Lifting Matters in San Antonio's Variable Soil
San Antonio straddles the Balcones Escarpment, and that geography creates two very different foundation challenges. North of Loop 1604, homes sit on thin rocky soil and white caliche over Edwards limestone, where drainage is fast and settlement is usually minimal. East and south of downtown, the deep dark expansive clay dominates, and that soil is the culprit behind most sunken slabs in the city. Spring rains and summer storms soak the clay, it swells, and then months of 100-degree heat and drought shrink it back down. Your driveway or patio sinks, cracks appear, and you face a tripping hazard that can injure family members or expose you to liability.
- Expansive clay soils shift seasonally, pushing slabs up and down over years and causing uneven settling.
- Concrete pooling water near your foundation or garage entry accelerates deterioration and invites root intrusion.
- Sunken walkways and driveway lips create trip hazards that homeowner liability insurance may not cover if negligence is claimed.
- A settled patio or pool deck ruins sight lines and drainage, trapping water under the slab and accelerating decay.
- Full replacement costs two to three times more than leveling and takes weeks; leveling is done in a day.
Leveling addresses the root cause by compacting and stabilizing the soil beneath, so your slab stays level and safe for years to come.
Key info: A settled driveway in Alamo Heights or a sunken patio in Leon Valley can sink 1 to 3 inches in just 5 to 10 years on expansive clay. Leveling lifts it back to grade in a single day, restoring drainage and eliminating the trip hazard without disturbing your landscaping or requiring permits for the lift itself.
For more detail on how soil and climate affect your concrete, see our guide to Concrete Repair & Resurfacing in San Antonio.
How We Level and Lift Sunken Concrete in San Antonio
Concrete leveling is a precise, non-destructive process that works best when the slab is still structurally sound and the settled area is not too large. We start with a site visit to assess the extent of settlement, check for cracks or structural damage, and identify the soil type and drainage issues. Once we understand what's beneath, we inject a stabilizing material, monitor the lift in real time, and compact everything so it holds. The entire job is done in hours, with minimal disruption to your home or yard.
- We measure the settled area and mark injection points every 2 to 3 feet across the sunken slab.
- Drilling small holes (typically 5/8 inch diameter) through the concrete allows us to reach the soil beneath without removing the slab.
- We inject expanding polyurethane foam or cement-based slurry under pressure, filling voids and lifting the slab gradually and evenly.
- Real-time monitoring with laser levels ensures the slab returns to the correct grade and matches adjacent concrete.
- We fill the injection holes with concrete patching compound to match the surrounding surface.
- The lifted slab is immediately usable; no curing time or traffic restrictions apply.
This method preserves your existing concrete, protects your landscaping, and avoids the cost and time of a full tearout and pour.
Example: A homeowner in Schertz noticed her 20-year-old driveway sinking near the garage entry, creating a 1.5-inch lip. We lifted it back to level in 4 hours using polyurethane injection, and the driveway has remained stable for three years. Full replacement would have cost twice as much and taken a week to cure.
If you are also concerned about sealing or protecting your concrete after leveling, check out our Concrete Sealing service to keep moisture and salt damage at bay.
Concrete Leveling & Slab Lifting Methods and When to Use Them
| Approach | Description | Best for |
|---|---|---|
| Polyurethane Foam Injection | Lightweight, expanding foam injected under the slab fills voids and lifts it with minimal weight added. Fast cure time, no curing period required. | Driveways, patios, and walkways where you need immediate use and minimal soil disturbance. Ideal for homes over the Edwards Aquifer recharge zone. |
| Cement-Based Slurry Injection | A mixture of Portland cement, sand, and additives is pumped beneath the slab. Denser than foam, it provides long-term compaction and is cost-effective for large areas. | Large patios, pool decks, and driveways where cost per square foot matters and the soil is stable but compacted. |
| Mud Jacking (Slab Jacking) | A traditional slurry of soil, cement, and water is forced beneath the slab. Heavier and slower to set than foam, but proven in San Antonio's clay soils for decades. | Older driveways and foundations in Alamo Heights or King William where deep settlement has occurred and maximum weight is needed to hold. |
| Partial Slab Replacement | If the slab is cracked severely or the settled area is large, we remove and replace just the affected section rather than lifting it. | Driveways with major structural cracks, large areas of settlement, or when leveling alone cannot restore safety and proper drainage. |
Concrete Leveling & Slab Lifting Cost in San Antonio: What to Expect
Concrete leveling and slab lifting in San Antonio typically starts at $4 per square foot for straightforward jobs on stable soil with good access. A typical 400-square-foot driveway approach or patio might run $1,600 to $2,400, depending on the depth of settlement, the number of injection points needed, and whether you choose foam or cement slurry. Large residential jobs, multiple settled areas, or complex drainage issues may cost more. The beauty of leveling over replacement is that you save 50 to 60 percent compared to tearing out and pouring new concrete, which can run $8 to $12 per square foot in the San Antonio market.
Several factors move the cost up or down. If the settled area is deep (more than 2 inches), we need more injections and material. If your driveway is surrounded by mature live oaks or cedar elms with root systems, we work carefully to avoid damaging them, which takes time. If the soil beneath is very soft or has poor drainage, we may need to add stabilizing agents or install a drainage layer, increasing the material cost. Access matters too: if your driveway is at the end of a long, steep approach in Boerne or if we have to park far from the job site, travel time adds up.
The best way to get an accurate price is to request a free estimate. We measure the area, probe the soil, and give you a firm quote based on what we find. Most estimates are ready within 24 hours. We recommend getting 2 to 3 estimates from insured contractors so you can compare methods, materials, and price. Make sure any contractor you hire is fully insured and can show you references from recent leveling jobs in your neighborhood.
For a detailed pricing breakdown and to see examples of completed jobs, visit our full pricing page.
Concrete Leveling & Slab Lifting Near Me: What San Antonio Homeowners Should Know When Hiring
Hiring the right contractor for concrete leveling is about more than price. You need someone who understands San Antonio's soil, has the right equipment, and can navigate local permitting and HOA rules. A cheap estimate might mean the contractor is cutting corners on material or will rush the job, leaving you with a slab that sinks again in two years. Take time to vet your options before signing a contract.
- Request references from three to five recent leveling jobs in San Antonio, Schertz, Cibolo, or nearby areas, and call them to ask about quality, cleanup, and whether the slab has held level.
- Check whether your HOA or neighborhood association has rules about concrete work, driveway width, or setbacks; some older neighborhoods like King William or Alamo Heights have strict design guidelines.
- Confirm that the contractor will pull any required permits for work near your property line or in right-of-way areas; this protects both you and the city.
- Get the estimate in writing, including the method (foam or slurry), the area to be lifted, the timeline, and any warranty or guarantee on the work.
- Ask whether the contractor will address drainage or soil stabilization as part of the job; a good leveling job includes steps to prevent re-settlement.
We stand behind our work with a solid warranty and are available for emergency calls. Contact us today for a free, no-obligation estimate at (210) 399-8031.
Pro tip: Spring (March through May) and fall (September through November) are the best times to schedule leveling in San Antonio. The soil moisture is moderate, temperatures are mild, and you avoid the summer heat that speeds up cure times and can stress older concrete. Winter is fine too, since hard freezes are rare and brief. Avoid scheduling during heavy rain or extreme heat, when soil conditions are less stable.
For more information on protecting and maintaining your concrete after leveling, check out our Concrete Driveways service page.
Concrete Leveling & Slab Lifting in San Antonio: Pricing Guide
| Service | Price | Details |
|---|---|---|
| Polyurethane foam injection | Starting at $4/sq ft | Fast-setting, lightweight method ideal for driveways and patios; cost varies by settlement depth and slab size |
| Cement-based slurry injection | Starting at $3.50/sq ft | Denser, longer-lasting stabilization for large areas; best value for patios and pool decks over 500 square feet |
| Mud jacking (traditional slab jacking) | Starting at $3/sq ft | Proven method for deep settlement and clay soil; heavier material provides maximum long-term compaction and hold |
| Complex or large-scale leveling job | On estimate | Multiple settled areas, severe cracking, poor soil access, or drainage work require on-site assessment before pricing |
| Travel and site visit | Included | No separate mileage fee or call-out charge in San Antonio and surrounding service areas; included in estimate |
| Free estimate and consultation | Free | Response within 24 hours at (210) 399-8031; no obligation to book, detailed quote in writing |
Indicative pricing, the exact cost depends on square footage, finish, and site access. Free personalized estimate within 24h at (210) 399-8031.