Quick answer: A retaining wall costs $40–$120 per square foot in Los Angeles depending on material — segmental or stone-veneer walls are on the lower end, poured concrete is the strongest and most expensive option for tall or load-bearing walls. APLA Construction (CA Lic #1136359) handles this throughout Greater Los Angeles.
With so many homes built on the hillsides and slopes of Los Angeles, retaining walls are essential for stabilizing soil, preventing erosion, and creating usable yard space. From the Hollywood Hills to Highland Park to the canyons above Malibu, a properly engineered retaining wall protects your property and can add flat, functional outdoor area. APLA Construction is a licensed LA general contractor (CA Lic #1136359) that designs and builds engineered retaining walls.
A retaining wall in Los Angeles typically costs between $40 and $120 per square foot of wall face, with most residential projects running $5,000 to $40,000 depending on height, material, and engineering. A 2026 guide:
| Item | Typical Cost |
| Concrete block or CMU wall | $50 to $90 per sq ft. |
| Poured concrete wall | $60 to $120 per sq ft, strongest for tall or load-bearing walls. |
| Segmental or stone-veneer wall | $40 to $100 per sq ft depending on finish. |
Walls over 4 feet tall, or any wall supporting a structure or slope surcharge, require engineering and a permit, which increases cost but is essential for safety.
Height is the biggest factor, because taller walls need deeper footings, rebar, and drainage. Site access, soil conditions, the need for a geotechnical or structural engineer, and premium facing materials all affect the final number. Proper drainage behind the wall is critical and included in quality builds.
Los Angeles requires a permit for retaining walls over 4 feet tall (measured from footing), and for shorter walls carrying a surcharge such as a slope or driveway. APLA coordinates structural and geotechnical engineering, pulls the permit, and builds to code so your wall passes inspection and lasts. This is closely related to foundation work, which we also handle.
Hillside neighborhoods like Silver Lake, Echo Park, Bel Air, and Pacific Palisades frequently need retaining walls for stability and to expand usable yard. We design for your specific slope, soil, and drainage conditions.
Yes for walls over 4 feet tall, or shorter walls supporting a slope or structure. APLA handles engineering and permits.
Poured concrete and CMU block are strongest for tall or load-bearing walls; segmental and stone veneer offer attractive finishes for shorter walls. We recommend based on your site.
Water pressure behind a wall is the leading cause of failure. Proper gravel backfill, drain pipe, and weep holes are essential and always included in our builds.
Most residential retaining walls take 2 to 8 weeks on site, depending on length, height, and site access. A short, straightforward garden wall sits at the low end; engineered walls that need deeper footings, drainage and difficult access run toward the upper end. Permit and engineering time, where required, is additional and comes before construction starts.
APLA Construction designs and builds engineered retaining walls across Los Angeles. Licensed CA Lic #1136359 — verify on CSLB. Call (818) 818-4419 or email info@aplaconstruction.com for a free estimate.