Trenching Cost Breakdown by Type
In Phoenix, trenching costs are primarily calculated per linear foot, heavily influenced by the required depth, the width of the trench, and the type of utility being installed. Hard soil conditions naturally bump these rates.
Water & Gas Lines
$5 - $10 / linear ft
Generally shallower cuts (18 to 24 inches). Faster digging using standard trenching attachments.
Sewer Lines
$8 - $15+ / linear ft
Requires deep cuts, precise sloping, and often wider buckets, increasing labor and equipment time.
Electrical Conduit
$5 - $12 / linear ft
Code depths dictate cost. Main lines require deeper trenches than low-voltage landscape lighting.
Drainage (French Drains)
$10 - $25 / linear ft
Cost reflects the need for extreme laser-guided precision to ensure water flows efficiently away from structures.
The Laser-Guided Accuracy Benefit
When it comes to sewer lines and drainage trenching, the slope is everything. A trench that dips or rises incorrectly causes blockages and massive plumbing failures down the road. At North Valley Rock, our grading and trenching services utilize advanced laser-guided equipment to ensure perfect 1/10th-inch accuracy over the entire length of the trench. Doing it right the first time saves you thousands in corrective plumbing later.
Equipment Used
We match the machine to the job. For simple backyard electrical, a walk-behind trencher or mini-excavator ensures minimal turf damage. For deep main sewer lines across commercial lots, we deploy heavy-duty track excavators to power through hard rock and maintain rapid production speeds. Visit our equipment page to learn more.