Cuanto Cuesta French Drain Installation en San Luis Obispo, CA? (2026)

Costo Promedio

$14,651–$29,608

Materiales

$10,920–$22,505

Mano de Obra (Central Coast)

$801–$1,181

Las tarifas de mano de obra en Central Coast son +5% comparadas con la linea base de Sacramento Metro.

A French drain installation includes trenching a sloped channel, lining it with filter fabric, laying perforated pipe on a gravel bed, backfilling with clean drain rock, and restoring the surface. French drains redirect subsurface water away from foundations, patios, and low-lying yard areas. This estimate reflects Sacramento-area pricing for 2025-2026.

San Luis Obispo se encuentra en el condado de San Luis Obispo (Central Coast). Charming college town (Cal Poly) with a mix of historic adobes, bungalows, and newer homes. El proveedor local de energia es PG&E.

Calculadora de Costos

Ajuste los detalles para obtener su estimado

Ciudad

Linear feet of drain

Materiales Incluidos

Perforated corrugated pipe (4")2500 linear ft

$2,500–$6,250

Clean drain rock (3/4")200 cu yd

$7,000–$12,000

Non-woven filter fabric2750 linear ft

$1,375–$4,125

Catch basin / pop-up emitter2 each

$30–$90

Pipe fittings, couplings, elbows1 lot

$15–$40

Mano de Obra(Central Coast +5%)

Drainage installer10h @ $53–$79/hr

$525–$788

Laborer / trenching7.5h @ $37–$53/hr

$276–$394

Margen del Contratista25%

0%Promedio 30%100%

Materiales

$10,920–$22,505

Mano de Obra

$801–$1,181

Margen

$2,930–$5,922

Costo Total Estimado

$14,651 – $29,608

$293–$592 por unidad

Quiere Su Precio Exacto?

Este es un estimado. Obtenga una cotizacion precisa y sin compromiso.

Llamar (916) 476-7689 Cotizacion Gratis

Cronograma del Proyecto

Drainage assessment & layout

30-60 minutes

Evaluate water flow patterns, identify problem areas, and mark the drain path with proper slope (1% minimum grade).

Trenching

2-5 hours

Excavate a trench 12-18 inches wide and 18-24 inches deep along the planned route, maintaining consistent downhill slope.

Pipe & gravel installation

2-4 hours

Line the trench with filter fabric, add a 2-inch gravel bed, lay perforated pipe (holes down), and fill with drain rock to within 4 inches of grade.

Surface restoration & testing

1-2 hours

Fold filter fabric over the gravel, backfill with topsoil, restore sod or landscape, install pop-up emitters, and test the system with water.

Desglose de Materiales

Material	Cantidad	Unidad	Costo Unitario	Total
Perforated corrugated pipe (4")	2500	linear ft	$1–$2.5	$2,500–$6,250
Clean drain rock (3/4")	200	cu yd	$35–$60	$7,000–$12,000
Non-woven filter fabric	2750	linear ft	$0.5–$1.5	$1,375–$4,125
Catch basin / pop-up emitter	2	each	$15–$45	$30–$90
Pipe fittings, couplings, elbows	1	lot	$15–$40	$15–$40

French Drain Installation en San Luis Obispo — Preguntas Frecuentes

How deep should a French drain be?+

Most residential French drains are 18-24 inches deep. For foundation drainage, the trench bottom should be at or below the footing level. Deeper drains intercept more groundwater but cost more to install.

Will a French drain solve my yard flooding?+

French drains are effective for subsurface water and slow-draining soils. For surface water runoff, you may also need a surface drain or channel drain. A drainage assessment will determine the best solution.

How long does a French drain last?+

With proper filter fabric and clean drain rock, a French drain lasts 20-30+ years. Fabric prevents silt from clogging the gravel and pipe, which is the main cause of premature failure.

Can I install a French drain myself?+

Small, shallow French drains are a feasible DIY project. However, drains near foundations, under hardscape, or requiring utility locates are best handled by a professional to avoid damage and ensure proper slope.