Trenching Cost and Production Rates: How Excavation Work Is Priced

HomeGuide reports a 200 foot trench at $1,000 to $2,400 in 2026, built from a residential range of $5 to $12 per linear foot. That is a shallow yard trench in workable soil with no surface to rebuild. Cojo Excavation and Asphalt publishes a wider industry baseline of roughly $8 to $40 and above per linear foot for open cut excavation, restoration excluded, and South Dakota DOT bid tabs show public work trench at $39.27 per foot average low bid for the 0 ft to 6 ft band. Same length, a tenfold spread. Depth, rock, live utilities in the corridor, surface restoration, spoil haul off, access, permits, traffic control and prevailing wage move the number far more than the 200 feet does. If any of that 200 feet crosses pavement or finished landscaping, price a bore against it.

On paper, 30 feet at the HomeGuide residential range of $5 to $12 per linear foot works out to roughly $150 to $360, and that arithmetic is almost always wrong. Short runs are dominated by fixed costs, not footage. Cojo Excavation and Asphalt reports mobilization at $250 to $800 and above flat, with most jobs carrying a minimum callout of $500 to $1,500 and above. A 30 foot job pays the same mobilization, the same OKIE811 ticket, the same utility exposure, and the same restoration per square foot as a long one, spread across almost no length. That is also why a 30 foot crossing under a driveway or sidewalk is frequently cheaper bored than trenched once you price cutting and patching the surface. There is no cut and no patch on a bore.

Anywhere from about one hour to two full working days, depending entirely on method. Angi reports a 100 foot trench 24 inches deep at 10 to 12 hours by hand, 2 to 3 hours with a walk behind trencher, and 1 to 2 hours with a ride on trencher, and Engineer Fix puts a single person hand digging in average soil at 5 to 10 linear feet per hour. HomeGuide gives the same 2 to 3 hour machine figure and notes it stretches in hard clay or rocky soil and when backfill is included. What those numbers all leave out is the day around the dig: the OKIE811 notice, exposing marked utilities, bedding, backfill and compaction, and surface restoration. On a real job the digging is rarely the long pole. See our 811 and potholing guide.

With a machine, plan on 2 to 3 hours for a walk behind unit and 1 to 2 hours for a ride on unit at about 24 inches deep, per Angi, which works out to the 33 to 50 feet per hour rate Engineer Fix calculates for walk behind work. Machine choice is the variable. Ditch Witch guidance published by Green Industry Pros recommends a ride on trencher once a job exceeds 100 feet, and calls a walk behind more cost effective on smaller sites. Equipment World is blunter: once you move past 200 feet or so, you have to seriously consider switching to a ride on, and four wheel drive is a definite advantage in hard soil. Neither manufacturer publishes a feet per hour rating, so soil, chain condition and operator experience set actual output.

Scale the published 100 foot rates and a 500 foot run works out to roughly 10 to 15 hours with a walk behind trencher at the 33 to 50 feet per hour rate Engineer Fix reports, or about 5 to 10 hours with a ride on unit using the 1 to 2 hours per 100 feet Angi reports. At that length the machine decision is already made for you. Equipment World advises seriously considering a ride on past roughly 200 feet, and Green Industry Pros notes the added weight and larger engine make a ride on more productive in tough ground. Then add the real schedule: the OKIE811 notice, potholing every marked crossing along 500 feet, pipe laying and bedding, compaction, and restoration. Long runs also multiply crossings, and each crossing is a candidate for a bore instead of a cut.

Work the sheet in order. Measure the run on the ground, not off the plan. Confirm required depth from the utility owner’s specification, since that sets the depth band and the protective system. Classify the soil, because clay, caliche and rock change everything. File the OKIE811 ticket and build the schedule around the three business day advance notice the Oklahoma Underground Facilities Damage Prevention Act requires, per the OKIE811 Excavator Guide. Price utility exposure as its own line, by hand or by vacuum inside the tolerance zone. Then price the trench by linear foot at that depth. Add bedding, backfill and compaction. Add surface restoration by square foot. Add traffic control. Add mobilization as a flat charge. Finally apply overhead and profit. Then ask the last question: should this be bored instead?

That question has no answer until you state a depth, because area excavation prices by volume removed. Do the arithmetic yourself: 3,000 sq ft at 1 ft deep is 3,000 cubic feet, and 3,000 divided by 27 is about 111 cubic yards. At 2 ft deep it is about 222 cubic yards, at 3 ft about 333. Apply a unit rate to that volume. HomeGuide reports excavation at $2.50 to $15.00 per cubic yard depending on soil, from $2.50 to $6.00 in light soil up to $10.00 to $15.00 in heavy, wet soil or loose rock, and $50 to $200 and above per cubic yard where rock must be jackhammered. South Dakota DOT bid tabs put bulk unclassified excavation near $5.03 to $6.02 per cubic yard on public work. Haul off, swell and disposal are separate. Trinity quotes per project.