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Slope moving, wall leaning, or yard too steep to use? We build concrete retaining walls in Pomona that handle clay soil pressure, drain correctly, and are permitted when required.
Concrete retaining walls in Pomona hold back soil on slopes and raised areas, preventing erosion, protecting foundations, and creating usable flat space on hillside lots - most residential projects run two to five working days from excavation to cleanup, depending on wall length, height, and whether a permit is required. The City of Pomona requires a building permit for walls over 4 feet tall, and that process adds one to three weeks before construction can begin.
The clay-heavy soil across much of Pomona creates more lateral pressure on retaining walls than sandy or loam soil would. A contractor who knows this area designs the drainage, footing depth, and wall thickness specifically for those conditions - not a generic approach copied from another region. If a wall fails here, poor drainage is almost always the reason.
For properties where a retaining wall is part of a larger hardscape plan, our concrete steps construction service can connect grade changes across the property in one cohesive project - keeping materials consistent and reducing total mobilization time.
If you can see a hillside or raised area slowly creeping downhill - especially after rain - the soil needs to be held in place. Pomona's clay-heavy soil moves more than sandy soil does, so even a gentle slope can become a problem over time. Waiting until it reaches a foundation or driveway makes the repair far more involved.
A retaining wall that tilts away from the hillside, or shows large horizontal cracks, is telling you it is losing the battle against soil pressure. This is especially common with older walls in Pomona's foothill neighborhoods, where decades of wet-dry cycles have stressed the structure. A leaning wall does not stabilize on its own - it gets worse.
Standing water collecting at the bottom of a raised area after rain is a sign the soil above is not draining properly. Saturated soil gets heavier and pushes harder against anything in its path. A retaining wall with proper drainage built in redirects that water before it becomes a structural problem.
Many Pomona homeowners - particularly in north Pomona near the foothills - have yards that are mostly slope. A tiered retaining wall system can create flat, usable space for a patio, garden, or lawn. This is a project that solves a practical problem and adds real value to your property at the same time.
We build poured concrete and concrete block retaining walls for residential properties across Pomona - from straight single-tier walls along a property line to multi-tier systems that carve flat terraces out of a steep backyard. Every project starts with a site assessment that looks at soil conditions, drainage, and the load the wall needs to handle. We then design the footing depth, wall thickness, and drainage layer accordingly. For homeowners who want finished steps connecting the terraced levels, we coordinate concrete steps construction as part of the same project.
We also handle full replacements of failed or failing walls - ones that are leaning, cracking, or showing signs of water damage behind the face. Replacement work includes demolishing the old wall, addressing whatever drainage failure caused the original problem, and building a new wall that won't repeat the same cycle. For properties where an interior floor is part of the scope, our concrete floor installation team can handle that work in the same visit window.
Best for maximum strength and a clean, finished look on sloped residential lots.
Well suited for properties where staged construction or phased height increases are planned.
Ideal for homeowners who want to convert a steep, unusable slope into multiple flat terraces.
For walls that are leaning, cracked, or failing - including drainage correction behind the new wall.
North Pomona borders the San Gabriel Valley foothills, and many homes in that area sit on sloped lots where a retaining wall is not a cosmetic choice but a practical necessity. These hillside properties often require more excavation, more complex drainage, and sometimes an engineered wall design before the city will issue a permit. If your home is near the foothill edge of the city, budget for a more involved project than a flat-lot homeowner would need - and work with a contractor who has done this kind of work in this terrain before.
Beyond the foothills, Pomona's clay soil is relevant everywhere in the city - not just on slopes. Even a low garden wall on a flat lot needs to be designed with drainage in mind if it is holding back a raised planting bed. We serve homeowners across all of Pomona's neighborhoods, including clients in Ontario and Rancho Cucamonga who face similar soil and slope conditions across the Inland Valley. The Portland Cement Association documents the concrete construction standards our crews follow on every retaining wall project.
We respond within 1 business day to schedule a free on-site visit. Retaining wall pricing depends on the slope, soil, and site access - a quote based only on a phone description is not reliable. Expect the site visit to take 30 to 60 minutes.
After the site visit you receive a written estimate that separates labor, materials, and permit fees. If your wall will be over 4 feet tall, we walk you through the City of Pomona permit process and handle the application for you.
Once permits are in hand, the crew excavates, pours the footing, and builds the wall. We install a gravel drainage layer and pipe behind the wall during construction - this step determines how long the wall will last, so we never skip it.
We backfill, grade the soil, and clean up the site. Poured concrete walls need about four weeks to reach full strength - we leave you with clear written instructions on what to avoid during that window so you are not guessing.
Free written estimate. No obligation. We respond within 1 business day.
(909) 868-1669We hold a current California Contractors State License Board C-8 Concrete license - verify it at cslb.ca.gov at any time. Full liability and workers' compensation coverage means you are not exposed if anything unexpected happens during excavation or construction.
Pomona sits on expansive clay soil that puts higher lateral pressure on retaining walls than stable sandy soil would. Every wall we build includes a gravel backfill layer and drain pipe sized for the site conditions - not a one-size-fits-all approach.
We have pulled permits with the City of Pomona Building and Safety Division on retaining wall projects across the city's neighborhoods, from the flatlands near downtown to the hillside lots in north Pomona. That direct experience with the local permit and inspection process means fewer delays on your project.
You receive a full, itemized written estimate - materials, labor, drainage, and permit fees - before any agreement is signed. No price changes once the crew shows up. The American Concrete Institute sets the standards we follow for concrete mix design and wall construction.
Every retaining wall project we complete is fully licensed, permitted where required, and built with drainage that matches the actual clay soil conditions on your property. We have worked on hillside lots, flat-lot garden walls, and full slope conversions across Pomona and the surrounding Inland Valley cities.
California requires concrete contractors to hold a current state license. You can verify any contractor at cslb.ca.gov in about two minutes. Permit requirements for retaining walls in Pomona are administered by the City of Pomona Building and Safety Division.
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