Retaining Wall Construction in San Diego
San Diego’s hillside terrain makes retaining walls one of the most common — and most important — concrete projects in the county. Whether you need to stabilize a slope behind your home, create terraced planting areas, or build a structural wall for a new ADU pad, SD Concrete Pros designs and builds retaining walls engineered for San Diego’s unique soil and seismic conditions.
We build retaining walls from three primary materials — concrete masonry blocks (CMU), poured-in-place concrete, and natural stone — each suited to different applications, budgets, and aesthetic preferences.
Types of Retaining Walls We Build
- Concrete Block Walls (CMU): Split-face or smooth block walls with rebar and grout-filled cores. The most cost-effective option for walls up to 6 feet. Can be finished with stucco, stone veneer, or left as decorative split-face block.
- Poured Concrete Walls: Formed and poured walls for maximum strength. Required for walls over 4 feet in height or where engineering specifies. Can be finished smooth, textured, or with a stone-form liner.
- Natural Stone Walls: Dry-stacked or mortared fieldstone, flagstone, or boulder walls. Best for landscape accents and walls under 4 feet.
- Segmental Retaining Walls (SRW): Interlocking concrete block systems (Allan Block, Versa-Lok, Belgard) for residential landscape walls. No mortar needed, gravity-based design.
- Cantilever and Counterfort Walls: Engineered wall designs for large-scale earth retention — commercial, municipal, and hillside development applications.
When Do You Need a Retaining Wall?
San Diego homeowners typically need retaining walls for:
- Preventing soil erosion on sloped properties
- Creating flat, usable yard space on hillside lots
- Supporting driveway or patio edges above a slope
- Protecting foundations from soil pressure and water runoff
- Building raised planting beds and garden terraces
- Stabilizing slopes for ADU construction or room additions
- Meeting city grading requirements for new construction
Engineering and Permits
In San Diego County, retaining walls over 4 feet in height (measured from the bottom of the footing to the top of the wall) require:
- A building permit from your local jurisdiction
- Engineered plans stamped by a licensed civil or structural engineer
- Soils report (geotechnical investigation) in most cases
- City inspections at footing, reinforcement, and final stages
SD Concrete Pros works with local engineers and handles the entire permit process. You do not need to hire an engineer separately — we coordinate everything.
Drainage — The Critical Detail
The number one reason retaining walls fail is poor drainage. Water buildup behind a wall creates hydrostatic pressure that can push the wall over. Every retaining wall we build includes:
- Perforated drain pipe (French drain) behind the wall at the footing level
- Drain rock backfill (3/4-inch clean gravel) behind the wall
- Filter fabric to prevent soil migration into the drain rock
- Weep holes through the wall face at regular intervals
- Surface drainage grading to direct water away from the wall top
Retaining Wall Costs in San Diego
- Segmental block walls (under 4 feet): $25 to $40 per square face foot
- CMU block walls (grouted with rebar): $35 to $55 per square face foot
- Poured concrete walls: $40 to $65 per square face foot
- Natural stone walls: $45 to $75 per square face foot
- Engineering and permits: $2,000 to $5,000 (walls over 4 feet)
A typical residential retaining wall project (30 to 60 linear feet, 3 to 5 feet tall) ranges from $8,000 to $25,000 depending on material, height, and site access.
Frequently Asked Questions
How long does a retaining wall last?
Properly engineered and built concrete or CMU retaining walls last 50 to 100 years. Segmental block walls typically last 30 to 50 years.
Do I need a permit for a short retaining wall?
Walls under 4 feet generally do not require a permit in most San Diego jurisdictions, but there are exceptions for walls near property lines, slopes, or structures. We verify requirements for your specific project.
Can you build a retaining wall on my property line?
Setback requirements vary by city. Most jurisdictions require walls to be at least 1 to 3 feet from property lines. We research your specific requirements before design.
Schedule Your Retaining Wall Consultation
Call SD Concrete Pros at 619-848-3880 or email info@sdconcretepros.com for a free on-site assessment. We will evaluate your slope, discuss options, and provide a detailed estimate.