Concrete Trench Drain Cost: Price Ranges for Installation and Materials 2026
Pricing for a concrete trench drain project varies with length, cover type, slope needs, and site preparation. This article shows concrete trench drain cost ranges in USD, including material, labor, and accessory costs, to help buyers budget accurately. Expect factors like trench width, depth, and backfill to steer total price.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Trench Drain Channel (precast concrete) | $15/ft | $28/ft | $40/ft | Standard 6-inch wide, 12-inch long sections |
| Concrete Pour & Finish | $8-$12/ft | $12-$20/ft | $25/ft | Pour depth typically 6-12 inches |
| Grate Cover (cast iron or polymer) | $25-$60/ft | $40-$90/ft | $120+/ft | Hinged or fixed options |
| Excavation & Base Prep | $3-$6/ft | $6-$12/ft | $20/ft | Soil removal, subbase, bedding |
| Labor (installation, 2-person crew) | $50-$70/hour | $60-$95/hour | $120/hour | Assumes moderate access |
| Permits & Fees | $0-$100 | $200-$400 | $1,000 | Depends on local code and scope |
Assumptions: Midwest or Southeast regions, standard 6-inch wide by 12-inch deep trench, normal soil, no heavy backfill or rock.
Typical Costs by Trench Length and Cover Type
Concrete trench drain cost usually ranges with length and grate choice, delivering a broad spread from budget installations to premium systems. For a 20-foot run with a basic concrete pour and a standard polymer grate, expect about $2,500-$4,000. A 40-foot run with heavy-duty cast-iron grates and a finished edge can rise to $6,000-$10,000. Per-foot pricing commonly falls within $60-$180 when factoring channel, pour, and grate together.
Major Cost Components in a Trench Drain Quote
Breaking down the quote helps identify savings opportunities and potential delays. The primary components are Materials, Labor, and Base Work. Materials often run $15-$60 per foot for channels plus $25-$120 per foot for grates depending on material. Labor typically accounts for 60-70% of total cost, especially on complex sites. Base work includes excavation, bed preparation, and backfill, commonly $6-$20 per foot. A compact estimate yields the table below.
| Cost Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials (channel + grate) | $20/ft | $40/ft | $90/ft | Material choices affect long-term durability |
| Labor | $40/hr | $70/hr | $110/hr | Crew size and site access matter |
| Excavation & Base | $4/ft | $8/ft | $18/ft | Rock or soft soil changes cost |
| Permits | $0 | $150 | $800 | Local rules drive variance |
Assumptions: Standard suburban site with good access, no underground utilities conflicts.
What Most Variables Do To the Final Price
Site conditions and system type drive pricing more than any single factor. Important variables include trench depth and width, soil type, and whether the system requires a trench drain for surface stormwater versus a drainage channel under a concrete slab. If the trench is deeper than 12 inches or wider than 8 inches, expect price jumps of 15-40%. A permeable base or additional backfill adds $2-$6 per linear foot on average.
Choosing Between Options That Affect Price
Lowering cost often means trade-offs in materials or longevity. Options to consider: swap to a polymer grate instead of steel, reduce depth to minimize concrete pour, or select a ready-made precast channel with simpler installation. For DIY-leaning methods, allocating around $1,200-$2,000 for a minimal 10-foot setup can work, but professional-grade installations typically run higher for long-term reliability.
Regional Price Differences You Should Anticipate
Location matters as much as size. In the Northeast, higher labor rates can push total above $150 per foot for premium setups. The Midwest often lands in the $90-$120 per foot range for mid-tier systems, while the South may fall between $70-$110 per foot for basic layouts. Permit costs also vary by city, adding $100-$800 in some markets.
Labor Time, Crew Size, and Scheduling Impacts
Labor dynamics significantly shape total cost. A two-person crew typically needs 1-2 days for a 20-30 foot run on a straightforward site, while complex installations with tight access can require 3-4 days. Hourly rates usually fall in the $60-$100 range for skilled trades and can rise with overtime or rush scheduling.
Maintenance and Replacement Beyond Installation
Long-term costs include maintenance and eventual replacement lifecycles. Concrete drains may require resealing or grate replacement every 10-20 years, while concrete wear can necessitate patching within 5-10 years in high-load areas. Budget 5-15% of initial project cost annually for upkeep and occasional grate swaps.
Per-Unit and Per-Project Scenarios You Might See
Consider a 25-foot run with a standard 6-inch channel and polymer grate. Per-foot materials may be $30-$60, with labor around $60-$95 per hour for a small crew over 1-2 days. Total project price typically lands in the $2,700-$5,000 range depending on site access and permit needs.
Ways to Cut Costs Without Sacrificing Core Function
Focused scope control and timing can trim expenses. Bundle projects to reduce mobilization, choose standard grate options, prepare the site in advance to minimize site downtime, and compare two to three qualified bids. If replacing an older drain, salvage usable components where possible, and reuse existing trench routes to minimize new excavation.
Concrete trench drain cost varies with length, depth, and materials. By understanding the main price drivers and comparing regional quotes, buyers can budget more accurately and avoid surprises when the contractor submits the final quote.