
A sunken slab does not always mean a full replacement. We lift and level settled concrete in Arcadia, fix the underlying soil problem, and leave you with a surface that works the way it should.

Foundation raising in Arcadia lifts a sunken concrete slab back to its original level by pumping material beneath it through small drilled holes - most residential jobs are completed in a single day, and many take just a few hours on-site.
A lot of Arcadia homeowners assume a settled slab means a full replacement. In many cases, the concrete itself is fine - what changed is the soil underneath it. When soil compresses, washes out, or shifts with the seasons, the slab drops. Raising it restores the support and costs a fraction of what full replacement would. Foundation raising in Arcadia commonly addresses patios, garage floors, driveway sections, and exterior slabs that have settled over time.
If the slab has cracked badly or broken apart, full replacement may be the better path. For those cases, our slab foundation building service handles new pours from scratch.
When a slab shifts, the frame of your home shifts with it - and that often shows first in doors and windows that used to work fine. If a door that opened smoothly now drags on the floor or fails to latch, the floor beneath it may have moved. This is common in Arcadia homes built before 1980, where foundations have had decades to settle.
Diagonal cracks running across tile or concrete floors often mean part of your foundation has dropped while another part stayed put. In Arcadia's clay-heavy soils, these cracks can appear or widen after a dry summer followed by heavy winter rains - the soil contracts and expands, and the slab moves with it.
If you notice a slope in one part of your floor, or if a marble rolls consistently in one direction, the slab beneath may have settled unevenly. You do not need special tools to notice this - your feet will usually tell you before anything else does. Acting early prevents the problem from worsening.
A visible gap between your concrete patio or garage floor and the wall of your house is a clear sign the concrete has dropped. In Arcadia, this often happens near large trees where roots have shifted or decomposed beneath the slab, leaving a void that allows the concrete to sink.
We offer both main methods for raising settled slabs: polyurethane foam injection and cement-soil slurry (mudjacking). Foam is lighter, cures faster, and leaves smaller holes - it is often the better fit for residential patios and garage floors where a quick return to service matters. Slurry is a proven method for larger areas where cost is a bigger factor. We assess your specific situation and recommend the method that makes the most sense for your slab and soil conditions.
Beyond the lifting itself, we also handle the underlying conditions that led to settlement when possible - improving drainage, addressing surface grading, and advising on tree root management where relevant. If your situation calls for structural work beyond slab lifting, our concrete cutting service can remove damaged sections before a new pour, and our slab foundation building service handles complete replacements.
Fast-curing, lightweight, and minimally invasive - ideal for patios, garage floors, and residential slabs.
A proven, cost-effective method for larger slabs where budget is a priority and cure time is flexible.
Every drilled hole is patched with a matched concrete mix for a clean, finished appearance after lifting.
We identify whether poor drainage is contributing to settlement and advise on corrective steps to help the repair last.
Arcadia sits on alluvial soils with significant clay content. Clay swells when wet and shrinks when dry - that seasonal cycle puts constant stress on slabs poured directly on the ground. Arcadia also has a large number of homes built between the 1940s and 1970s, many of which were constructed on soil that was not compacted to modern standards. After 50 to 80 years of seasonal movement, settlement is common. Add in the city's mature tree canopy - oaks and eucalyptus that line many neighborhood streets - and root activity beneath slabs is another factor that affects many properties around town.
Seismic activity is part of life in the San Gabriel Valley. Even moderate tremors can gradually loosen the soil beneath a slab over time. Homeowners in Pasadena and Monrovia face the same clay soil and seismic conditions, and we serve both areas as well. The Concrete Foundations Association provides detailed guidance on slab lifting best practices and what homeowners should expect from a quality repair.
We respond within 1 business day and schedule a free on-site assessment. You describe what you are seeing - doors sticking, visible gaps, an uneven floor - and we take it from there. No phone estimate for foundation work; we need to see the slab.
We walk the affected area, probe the soil, and measure how far the slab has dropped. We also look for what caused the sinking. At the end of the visit you get a written estimate and a clear explanation of which method we recommend and why.
If your job requires a permit from the City of Arcadia Building Services Division, we handle pulling it before any work begins. Permitted work is inspected by the city - which gives you an independent check on the quality of the finished job.
The crew drills small holes at strategic points, pumps the lifting material under the slab, and raises it back to level. Each hole is patched with concrete mix. Most jobs are done in a single day. You will be walked through the finished work before the crew leaves.
Free on-site visit. Written estimate before any work begins. No obligation.
(626) 898-6986Most contractors lift the slab and leave. We tell you what caused the sinking - clay soil movement, root activity, drainage failure, or poor original compaction - and whether the same problem is likely to recur. You leave knowing more than when you arrived.
The San Gabriel Valley's clay soils behave differently than sandy or loamy soils. We have worked across Arcadia's neighborhoods and know how local seasonal moisture patterns affect the ground beneath slabs. That knowledge shapes how we approach every job in the city.
Arcadia is a city of roughly 57,000 people, many of them long-term homeowners with 1950s and 1960s foundations that have been settling for decades. We work here regularly and understand what these properties typically need - not just in theory, but from direct experience.
Foundation work can feel like a blank check. We provide an itemized written estimate before any crew shows up. The number you agree to is the number you pay. No mid-job discoveries that double the bill.
Slab lifting is one of those repairs where the difference between a good contractor and a poor one shows up months later, not on the day of the job. A raised slab that settles again within a year usually means the root cause was not addressed. We focus on that part first.
Remove damaged or shifted concrete sections cleanly before a new pour takes their place.
Learn moreWhen a slab is too far gone to lift, we pour a new one built to handle Arcadia's clay soils.
Learn moreCall now or request a free estimate. We respond within 1 business day and will give you a written price before any work begins.