Cuanto Cuesta Concrete Retaining Wall en Cotati, CA? (2026)

Costo Promedio

$78,812–$118,522

Materiales

$58,560–$88,125

Mano de Obra (Wine Country)

$3,012–$4,470

A poured concrete retaining wall provides superior strength for holding back soil on sloped properties. The installation includes footing excavation, rebar cage assembly, form construction, concrete pouring, waterproofing the back face, installing drainage gravel and a perforated drain pipe, and backfilling. In NorCal's hilly terrain — particularly in Placer, El Dorado, and eastern Sacramento County — retaining walls are frequently needed for lot development and erosion control.

Cotati se encuentra en el condado de Sonoma (Wine Country). Small bohemian town near Sonoma State University. El proveedor local de energia es PG&E.

Calculadora de Costos

Ajuste los detalles para obtener su estimado

Ciudad

Linear feet

Materiales Incluidos

Ready-mix concrete (4000 PSI)180 cubic yard

$25,200–$33,300

Rebar (#4 and #5)7500 linear foot

$6,000–$10,500

Plywood forms and bracing450 sheet (4x8 ft)

$15,750–$24,750

Perforated drain pipe (4-inch)1050 linear foot

$1,260–$2,625

Drainage gravel (3/4-inch clean)120 cubic yard

$5,400–$8,400

Waterproofing membrane90 roll (100 sq ft)

$4,950–$8,550

Mano de Obra

Concrete mason / formwork carpenter36h @ $50–$75/hr

$1,800–$2,700

General laborer24h @ $28–$40/hr

$672–$960

Excavation operator9h @ $60–$90/hr

$540–$810

Margen del Contratista28%

0%Promedio 30%100%

Materiales

$58,560–$88,125

Mano de Obra

$3,012–$4,470

Margen

$17,240–$25,927

Costo Total Estimado

$78,812 – $118,522

$2,627–$3,951 por unidad

Quiere Su Precio Exacto?

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Llamar (916) 476-7689 Cotizacion Gratis

Codigo de Construccion de California

Walls over 4 feet require engineered plans and permits. Seismic design per CBC Chapter 18 is required in NorCal.

Cronograma del Proyecto

Engineering & permits

1–2 weeks

Obtain structural engineering plans (required for walls over 4 feet) and pull building permits.

Excavation & footing

1–2 days

Excavate for the footing (typically 12–18 inches deep), set rebar cage, and pour footing.

Forming & wall pour

2–3 days

Build wall forms, tie rebar vertically from footing, and pour wall concrete in lifts.

Waterproofing & drainage

1 day

Strip forms, apply waterproofing membrane to back face, install drain pipe and gravel.

Backfill & finish

1 day

Backfill behind wall in compacted lifts, grade surface drainage, and finish exposed face.

Desglose de Materiales

Material	Cantidad	Unidad	Costo Unitario	Total
Ready-mix concrete (4000 PSI)	180	cubic yard	$140–$185	$25,200–$33,300
Rebar (#4 and #5)	7500	linear foot	$0.8–$1.4	$6,000–$10,500
Plywood forms and bracing	450	sheet (4x8 ft)	$35–$55	$15,750–$24,750
Perforated drain pipe (4-inch)	1050	linear foot	$1.2–$2.5	$1,260–$2,625
Drainage gravel (3/4-inch clean)	120	cubic yard	$45–$70	$5,400–$8,400
Waterproofing membrane	90	roll (100 sq ft)	$55–$95	$4,950–$8,550

Concrete Retaining Wall en Cotati — Preguntas Frecuentes

Do I need a permit for a retaining wall?+

In most NorCal jurisdictions, retaining walls over 4 feet tall (measured from bottom of footing to top of wall) require a building permit and engineered plans.

How long does a concrete retaining wall last?+

A properly built and waterproofed concrete retaining wall can last 50–100 years. Adequate drainage behind the wall is the most critical factor for longevity.

What causes retaining walls to fail?+

Poor drainage is the #1 cause. Water buildup behind the wall creates hydrostatic pressure that can cause cracking, tilting, or collapse. Always install a drainage system.

Poured concrete vs. block retaining wall — which is better?+

Poured concrete is stronger and better for taller walls or heavy soil loads. Block walls are more cost-effective for shorter walls (under 4 feet) and easier for curved designs.