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Serving Simi Valley, CA and surrounding areas. (805) 261-5871
Soil washing downhill, a wall that is leaning, or a slope you cannot use - we build retaining walls that hold, drain properly, and meet Simi Valley city and HOA requirements.
Retaining wall construction in Simi Valley means building a wall that holds back a slope, installs drainage behind it so water pressure cannot build up, and passes city inspection - most residential projects take two to four days of active work once the permit is in hand.
Simi Valley was largely developed in the 1960s through 1980s on hillside and sloped terrain, and a lot of the original retaining walls from that era are now 40 to 60 years old. When those walls start leaning, cracking, or letting soil wash downhill, they need to be replaced - not patched. A wall built to current standards with proper drainage and a buried base can last 50 years or more. We use concrete block and natural stone, choose the material based on your slope, your budget, and your HOA's design requirements, and build every wall with drainage as a standard part of the job - not an optional add-on.
Many Simi Valley homeowners combine retaining wall work with other hardscape projects. If you are also dealing with uneven ground elsewhere on your property, our masonry restoration team can assess and repair existing masonry structures, and our concrete block walls service covers freestanding wall construction for property boundaries and privacy screening.
If you can see your retaining wall tilting away from the slope it is holding, or if there are horizontal cracks running across the face of it, the wall is under stress it can no longer handle. This is not a cosmetic issue - a wall that is moving is a wall that is failing. In Simi Valley's clay-heavy soils, this kind of movement often accelerates after a wet winter.
After a good rain, if soil, mulch, or gravel is migrating from an upper part of your yard down onto a walkway, driveway, or neighbor's property, your slope does not have adequate support. Simi Valley gets most of its rainfall in concentrated winter storms, and even a few inches can move a surprising amount of loose soil on an unprotected slope.
If a significant portion of your backyard or side yard is too steep to use for a patio, garden, or play area, a retaining wall can create a level terrace that turns wasted slope into functional space. This is one of the most common reasons Simi Valley homeowners on hillside lots invest in new wall construction.
Many of Simi Valley's hillside homes were built in the 1960s through 1980s, and the retaining walls installed at that time were often built with materials and methods that have since been improved. If your wall is original to a home from that era, it may be approaching or past the end of its useful life - even if it does not look obviously damaged yet.
Most of what we build is residential retaining walls for homeowners dealing with a sloped backyard, a failing original wall, or a hillside lot that needs to be stabilized before the next rainy season. We work with concrete block and natural stone, and for taller slopes we design tiered wall systems that create level terraces instead of a single tall wall. Every wall we build includes a gravel backfill layer and a perforated drain pipe - drainage is the single most important factor in how long a retaining wall lasts, and it is built in on every project we take.
Beyond new construction, we assess and replace older walls that are approaching end of life. If you have a wall from the 1970s or 1980s that is showing signs of stress, it is worth knowing whether repair or full replacement makes more sense before it fails. Retaining wall projects often connect to other masonry work on the property - that is why we also offer masonry restoration for existing stonework and concrete block wall installation for freestanding boundary and privacy walls.
For homeowners with a sloped lot that needs a wall for the first time, or those replacing an existing wall that has failed or reached end of life.
The most cost-effective option for most residential slopes in Simi Valley - durable, clean-looking, and well suited to HOA communities with design standards.
For homeowners who want a more textured, natural look that blends with hillside landscaping or matches existing stonework on the property.
When a single tall wall is not ideal, a series of shorter stepped walls can hold the same slope while creating usable level terraces between each tier.
Simi Valley sits in a valley ringed by hills, and many of its neighborhoods were built directly on sloped and graded hillside terrain. A large share of the original retaining walls from that development period are now decades old and were built to standards that have since been updated. The city's clay-heavy soils make this worse - clay absorbs water and swells, then dries and shrinks, and that seasonal movement puts steady stress on any wall that was not built deep enough or drained correctly. When those walls fail, it usually happens fast: a wet winter accelerates a lean that had been building for years, and suddenly a homeowner is dealing with an emergency rather than a planned replacement. The City of Simi Valley Building and Safety Division requires permits for walls over three feet, and the review process protects both the homeowner and the neighbors whose properties share the slope.
The hill and slope conditions in Simi Valley extend into the surrounding communities we serve. Homeowners in Moorpark and Thousand Oaks face similar hillside lot challenges and clay soil conditions, and we bring that same understanding of local terrain to every project in those areas. The UC Agriculture and Natural Resources cooperative extension has documented how Southern California's wet-dry seasonal cycle affects slope stability, and the drainage systems we install reflect those conditions.
We walk your slope, look at any existing wall, and ask about your goals for the space. This visit takes 30 to 60 minutes and is free. We will not give you a price over the phone without seeing the site.
Once you accept the written estimate, we submit the city permit application and handle any HOA submission your neighborhood requires. City review typically takes two to four weeks - we manage the process so you do not have to.
The crew marks the wall location, removes any old material, and excavates the footing. This is the noisiest part of the job. Expect a small machine in your yard and a pile of removed soil that gets hauled away.
We build the wall from the bottom up, setting each course level and plumb. Behind the wall we install a gravel layer and perforated drain pipe - this step is never skipped. After inspection sign-off, we backfill, clean up, and walk through the finished wall with you.
Free on-site estimate. No pressure. We reply within 1 business day.
(805) 261-5871We install a gravel backfill layer and perforated drain pipe behind every retaining wall we build - no exceptions. Walls that trap water fail faster regardless of the material. In Simi Valley's clay soils, drainage is the difference between a wall that lasts 50 years and one that leans within a decade.
We have worked on sloped lots throughout Simi Valley's hillside neighborhoods, including properties with aging walls from the city's 1960s-1980s development era. That hands-on experience with local terrain is something no national contractor can substitute - we have seen what the clay soils and seasonal wet-dry cycles actually do to walls here.
Every retaining wall we build in Simi Valley is permitted through the city and passes inspection before the job is closed out. That protects you if you ever sell the home and gives you a documented record of the work. If a contractor tells you a permit is not necessary for a wall over three feet, walk away.
Our concrete block wall installations follow the standards set by the National Concrete Masonry Association, which establishes best practices for segmental retaining wall design, base compaction, and long-term drainage performance. Following a documented standard is how you build a wall that still performs correctly in 20 years.
Every wall we build in Simi Valley is permitted, drained, and designed specifically for the slope and soil conditions on your property. That combination - compliance, drainage engineering, and local terrain knowledge - is what makes the difference between a wall that holds and one that does not.
Older stonework or block structures showing their age? We assess, repair, and restore masonry walls and structures to extend their life rather than replace everything.
Learn MoreNeed a freestanding block wall for a property boundary, privacy screen, or yard divider? We build concrete block walls that are plumb, permitted, and built to last in local conditions.
Learn MoreLate winter through spring is the best time to schedule wall work in Simi Valley - the soil is easier to excavate and permits process faster before peak season. Call now to lock in your slot.