Modesto · Stanislaus County
Concrete Retaining Walls in Modesto
Modesto is mostly flat, but retaining walls come up along Dry Creek and river-edge lots, at pool and patio grade changes, and where neighboring lots sit at different heights.
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Drainage behind the wall is the difference between a wall that stands and one that leans: gravel backfill, a perforated drain at the base with an outlet, and weep holes.
Under the California Residential Code, retaining walls up to 4 feet tall from the bottom of the footing generally don't need a building permit unless they hold back a slope, driveway or structure. Taller or loaded walls need City of Modesto permits and engineering.
Near Dry Creek, the river or other waterways, check with the City before digging footings, since work near a creek bank can involve other agencies.
Concrete Retaining Walls questions
Do I need a permit for a retaining wall in Modesto?
Generally not for walls 4 feet or less from the bottom of the footing that don't hold back a slope, driveway or building.
Block or poured concrete?
Both work; reinforced block is common and takes stucco well, poured concrete is stronger for taller walls.
Why is my wall leaning?
Usually water pressure from missing drainage, sometimes a tree root pushing from behind.
Other concrete work in Modesto
Concrete Driveways · Patios & Walkways · Foundations & Slabs · Stamped & Decorative Concrete · Concrete Repair & Replacement · RV Pads & Driveway Extensions · Commercial Concrete
Helpful guides
ADU Foundations in Modesto: What the Slab Needs Before the Walls Go Up
Also serving: Ceres · Salida · Riverbank · Turlock · Oakdale · Empire · Hughson
Get a concrete retaining walls estimate
Tell us about the job and a licensed concrete contractor serving Modesto will call you back, usually the same business day.