Excavation near you

Homeowners buy excavation under half a dozen different names. Knowing which job you are asking for changes the equipment, the risk and the permit.

Cave-ins are the hazard the whole standard is built around, and the thresholds are specific. A protective system is required unless the excavation is made entirely in stable rock, or is less than 5 feet in depth and examination of the ground by a competent person provides no indication of a potential cave-in. Protective system, in OSHA's definition, means a method of protecting employees from cave-ins, from material that could fall or roll from an excavation face or into an excavation, or from the collapse of adjacent structures, and includes support systems, sloping and benching systems, shield systems and other systems that provide the necessary protection. The sloping and benching configurations OSHA publishes in tabulated form cover excavations 20 feet or less in depth; beyond that, a design approved by a registered professional engineer is the route.

Getting out matters as much as staying covered. A stairway, ladder, ramp or other safe means of egress shall be located in trench excavations that are 4 feet or more in depth so as to require no more than 25 feet of lateral travel for employees. Material at the edge is the next item: employees are protected from equipment or materials that could fall or roll into an excavation by placing and keeping such materials or equipment at least 2 feet from the edge of excavations, or by the use of retaining devices sufficient to prevent them falling or rolling in.

And the whole thing is checked daily by a person with the authority to stop work. Daily inspections of excavations, the adjacent areas, and protective systems shall be made by a competent person for evidence of a situation that could result in possible cave-ins, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions. If a contractor cannot tell you who their competent person is on your job, that is the answer to your question about whether they run OSHA-compliant work.

Calling 811 before digging is a genuine legal obligation in the United States, enforced through state dig laws and reinforced by federal workplace rules, and it is free to the person digging. OSHA puts the duty on the employer: the estimated location of utility installations, such as sewer, telephone, fuel, electric, water lines, or any other underground installations that reasonably may be expected to be encountered during excavation work, shall be determined prior to opening an excavation, with utility companies contacted within customary response times, and while excavation is open, underground installations shall be protected, supported or removed as necessary to safeguard employees.

The notice period itself is set by the state. California's law is a clear example of the shape these take: an excavator planning to conduct an excavation shall delineate the area to be excavated before notifying the regional notification center, shall notify it at least two working days and not more than 14 calendar days before beginning that excavation, and may not begin until all operators have met their marking obligations. Where the excavation is within 10 feet of a high-priority subsurface installation, an onsite meeting with the operator must be completed before work starts, records of notifications must be kept for at least three years, and if the ticket expires while work continues, the excavator must stop, obtain a new ticket and satisfy its conditions before resuming. Your state's numbers will differ; the structure will not.

One limit is worth understanding: the ticket brings out the operators of utility-owned facilities to mark their own lines. Things you or a previous owner installed, such as an irrigation main, a gas line to a grill, low-voltage lighting, a well line or a private septic lateral, are generally not on anybody's map. Tell the contractor what you know is buried and where, and ask whether a private locate is worth adding.

Everything in trench safety turns on what the soil is, and OSHA does not treat that as a matter of experience alone. Sloping and benching, shoring and shielding are all selected against the soil type present, and the person making that judgment is the competent person: one who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. The authorization half of that definition is the part homeowners overlook. A crew member who can recognize a problem but cannot halt the job is not a competent person in the standard's sense.

Soil also changes during a job, which is why the inspection requirement is daily rather than once. Rain saturates a face that was stable yesterday. Vibration from a machine working alongside the trench loosens material. Previously disturbed ground, common near any existing foundation or old utility run, behaves differently from undisturbed soil. Groundwater seeping into a cut is a hazard in its own right. Ask a prospective contractor how they classify soil on site, what protective systems they own or rent, who their competent person is and what happens to the schedule if conditions change. Those four answers separate a serious excavation contractor from a company with a machine.

The obligation that surprises homeowners is that it lands on the owner, not the excavator. In the model residential language Seattle publishes, where a site's existing grade is altered by filling, excavating, dredging or moving earth materials, it is the owner who shall protect all adjoining property from encroachment or collapse during the work. You can hire the obligation out, and you should, but you cannot hand it over: if a neighbour's fence line slumps into an open cut, the duty that was breached was yours. That is the reason to care, before the machine arrives, whether the contractor carries liability cover that would actually answer for a neighbour's damage, and whether the cut is being laid back or shored rather than dug vertical because it is quicker.

Practically, that means three things belong in the contract before a machine arrives. Where spoil will be stockpiled, and for how long, since a pile against a fence loads it and a pile in the wrong place blocks the work. How equipment reaches the dig, what it crosses to get there, and who is responsible for a rutted lawn or a cracked driveway apron. And how close the excavation comes to a property line, a neighboring foundation or a protected tree's root zone, because undermining any of those converts a construction question into a legal one. If the access route runs across a neighbor's property, get that permission in writing rather than relying on a friendly conversation.

Excavation is priced on volume, difficulty and what happens to the dirt. The variables are the depth and dimensions of the dig, soil conditions including rock, clay and saturation, whether groundwater requires dewatering, whether a protective system must be rented or engineered, how large a machine can physically reach the work and what has to be protected on the route, whether spoil stays on site or is hauled and where it can legally go, how long the hole stays open, and whether permits, inspections, erosion control and restoration are inside the price. Ask specifically whether disposal and backfill compaction are included, because those two omissions explain most surprise invoices.

LokalMatch connects you to the contractors, nothing more. You describe the job once: what you need dug and roughly how deep, what is being built in it, how a machine would get to the spot, what you already know is buried nearby, and whether the ground is rocky, clay or wet. Excavation contractors covering your area receive that request and the interested ones get in touch. Pros pay for the requests they receive and homeowners are not charged to use the service. LokalMatch does not perform excavation, does not set prices and does not vet, rank or recommend any contractor, so verifying licensing where your state requires it, liability and workers' compensation coverage, the locate ticket and the written scope remains your responsibility.