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Sunken driveway, tilting patio, or a slab that keeps settling? We lift concrete back to level in San Luis Obispo and fix the drainage that caused it to sink in the first place.
Foundation raising in San Luis Obispo lifts sunken concrete slabs back to level by pumping material into the void underneath - most residential jobs are completed in two to eight hours and the surface is walkable the same day.
Most homeowners who contact us have a driveway, patio, or garage slab that has tilted or dropped over time. In San Luis Obispo, the culprit is almost always the soil underneath: the clay-heavy ground throughout the city swells after winter rain and shrinks during dry summers, and that movement gradually erodes the support beneath your slab. The slab itself is usually fine - it is what is underneath that has shifted.
If the slab is too far gone to lift, our concrete footings and foundation work can address what needs to be rebuilt from the ground up. But for most homes we look at, raising is the faster and more affordable path.
When a slab shifts even a small amount, the door frames and window frames above it shift too. If a door that used to swing freely now drags or won't latch without force, that is often an early sign the slab beneath it has moved. This is especially common in San Luis Obispo's older neighborhoods after a wet winter, when clay soils have expanded and then dried unevenly.
Stand on your patio or in your garage and pay attention to whether the floor feels level. A slab that has settled even an inch or two creates a noticeable lean. Place a ball on the floor - if it rolls on its own, something has shifted. Uneven floors are not just uncomfortable; they redirect water toward your home's structure.
Small hairline cracks are normal in concrete, but cracks that run along the edge of a slab - especially if one side is higher than the other - suggest the slab is separating from the soil beneath it. In San Luis Obispo, these edge cracks often appear in late summer after the soil has contracted through the long dry season, leaving a gap under the perimeter.
If water collects against your home's foundation after rain, the grade has changed. Settled slabs redirect water toward your home instead of away from it, which then accelerates further soil erosion underneath. This cycle gets worse each rainy season and can work its way inside a foundation over time.
We offer both mudjacking and polyurethane foam injection for foundation raising in San Luis Obispo. Mudjacking pumps a cement-and-soil slurry beneath the slab to fill the void and push the concrete up. It is the proven, lower-cost approach and works well for most standard driveways, patios, and garage slabs. Foam injection uses an expanding polyurethane material that is lighter, cures in minutes, and leaves smaller holes - a better fit for pool decks, hillside slabs, or any surface where speed and load sensitivity matter. Every job starts with an on-site assessment so you get the right method for your specific slab and soil.
Beyond the lift itself, we also look at the drainage patterns around your slab. If water is still being directed toward your foundation, the slab will settle again. That drainage conversation is part of every job we take on. For slabs that are too damaged to raise, our concrete cutting service can remove the damaged section cleanly so replacement can begin without disturbing surrounding concrete.
Best for homeowners who want a reliable, cost-effective lift on standard driveways, patios, and garage slabs.
Suits slabs near pools, hillside properties, or any job where lightweight fill and fast return to use are priorities.
Ideal for homeowners whose slabs have settled more than once, where poor grading or water flow is the repeat cause.
San Luis Obispo sits on clay-heavy soils that behave very differently from sandy or loamy ground. When winter rain arrives - typically concentrated between December and March - the clay absorbs water and expands. When summer comes and the ground dries out, that clay shrinks back. A slab poured over this kind of soil goes through a push-and-pull cycle every year. Over time, the soil underneath can wash away entirely in low spots, leaving a void that the slab eventually drops into. Older homes in neighborhoods like Alta Vista and Ferrini Heights, where grading has shifted over decades, tend to show this problem most clearly. The International Concrete Repair Institute provides published guidance on how to assess slab conditions before committing to a repair method.
San Luis Obispo County also sits near several active fault systems, including the Los Osos and Edna Valley faults. Even minor seismic events can shift soil that was already marginal under a slab. Our crews work throughout the city and in surrounding communities including Atascadero and Morro Bay, both of which share similar clay-soil conditions and seasonal drainage patterns.
We respond within 1 business day to schedule a free on-site visit. We'll ask a few basic questions - where the problem is, how long you've noticed it, and whether there are any visible cracks or gaps - so we arrive prepared.
We walk the area with you, check the slab from multiple angles, and use a level to measure exactly how much it has dropped. You get a written estimate that specifies the method, the scope, and every cost before you commit to anything.
If a permit is required through the City of San Luis Obispo Building and Safety Division, we handle the application and keep you updated on the timeline. Most residential lifting projects are scheduled within a few days of permit approval.
We drill small holes, pump material until the slab rises to level, then patch the holes with concrete. The whole job typically takes two to eight hours. Before we leave, we walk the finished surface with you and explain the curing window - usually 24 to 72 hours before vehicle traffic.
We respond within 1 business day - no obligation. After you submit, someone from our office will call to schedule your free on-site visit.
(805) 269-8770San Luis Obispo's expansive soils behave differently from what most national guides describe. We've worked on slabs throughout this city and know what base conditions to expect in each neighborhood. That local knowledge changes how we assess a job and which method we recommend.
We work across San Luis Obispo County and down through Santa Barbara County - from Paso Robles to Santa Barbara. That regional scale means we see a wider range of soil and drainage conditions than a contractor who only works in one zip code, and it shows in the quality of our assessments.
Most contractors lift the slab and leave. We also look at what caused it to sink and tell you honestly whether a drainage fix is needed alongside the lift. Skipping that conversation is how homeowners end up calling someone back two years later for the same problem.
The City of San Luis Obispo Building and Safety Division requires permits for certain structural repairs. We handle all permit applications and scheduling, and we build permit timelines into your project schedule from the start. You can verify our licensing anytime through the{' '} California Contractors State License Board at cslb.ca.gov.
Every foundation raising job we take on starts with an honest assessment. If raising is not the right solution for your slab, we will tell you that and explain what is.
Precision slab cutting for utility access, drainage channels, and section removal when raising alone is not the right solution.
Learn moreNew footings poured to current seismic standards for additions, decks, and structural repairs throughout the Central Coast.
Learn moreSan Luis Obispo's wet winters start in November - scheduling your lift in fall means you go into the rainy season with a level slab and proper drainage already in place.