Retaining walls in San Diego typically run $45–$120 per face foot installed. Segmental block sits at the low end, poured concrete and natural stone at the high end.
The bigger question is not cost per foot — it is whether your wall is holding soil, water, or a hillside.
Cost by wall type
Face footage — height times length — is how walls are priced, not linear feet.
- Segmental concrete block: $45–$70 per face foot
- CMU with stucco or stone veneer: $70–$110 per face foot
- Poured structural concrete: $85–$130 per face foot
- Dry-stacked or mortared natural stone: $110–$180 per face foot
The three-foot rule
Across most San Diego jurisdictions, walls over three feet measured from the bottom of the footing require a permit, and typically a stamped engineered design. Any wall with a surcharge — a slope, driveway, pool or structure above it — can require engineering even under three feet.
Terracing two shorter walls instead of one tall wall is often cheaper and better looking, but only when the spacing between them is genuine, not cosmetic.
Drainage is the whole ballgame
Nearly every failed wall we tear out in La Mesa, Poway and Mission Hills failed for the same reason: hydrostatic pressure. Saturated soil behind a wall weighs far more than dry soil and has nowhere to go.
A correct wall has clean gravel backfill, filter fabric, a perforated drain line daylighted to a safe outlet, and weep holes where applicable. Those items add a few hundred dollars and save the entire structure.
Frequently asked
- How long do retaining walls last?
- A properly drained, engineered wall lasts 40+ years. An undrained one can bulge within five.
- Can I build on my property line?
- Sometimes, but setbacks, easements and neighbor drainage rights all apply. Survey first.
- What's the cheapest durable option?
- Segmental block with proper drainage. Skipping drainage to afford nicer facing is the wrong trade.