Questions to Ask an Excavation Contractor Before Hiring (Oregon)

Quick Verdict

The questions to ask an excavation contractor before hiring fall into a handful of categories: licensing and insurance, who handles permits and 811, how they deal with rock and unforeseen conditions, haul-off and disposal, compaction and testing, timeline, and warranty on the grade. A good contractor answers all of these clearly and without dodging. The point is not to trip anyone up; it is to confirm you are hiring someone licensed, insured, and experienced with your kind of ground. In Oregon, add questions about wet-season scheduling and local soil and rock experience. Use the checklist below as a copy-paste list. For the broader picture, see our excavation cost and hiring guide.

Start With Licensing and Insurance

Before anything else, confirm the contractor is legitimate and protected.

• What is your CCB number? Every legitimate Oregon contractor has one, and you can verify it is active.
• Are you insured and bonded? Liability insurance and the CCB bond protect you if something goes wrong.
• Can you provide proof of both? A real contractor will not hesitate.

A good answer is a specific CCB number you can look up and a willingness to show current insurance. A bad answer is vagueness, "don't worry about it," or cash-only pressure. Verifying these is the foundation of our how to vet an excavation contractor spoke.

Ask Who Handles Permits and 811

These are the steps that keep the job legal and safe.

• Who pulls the permit? It should be clear whether the contractor handles permitting or leaves it to you.
• Who calls 811 before digging? Calling before you dig to locate utilities is non-negotiable; a pro always does this.
• How do you handle marked utilities on site? They should describe locating, hand-digging near marks, and protecting lines.

A good answer is that the contractor calls 811 every time and handles or clearly coordinates the permit. Anyone who shrugs off utility locating is a contractor to walk away from.

Ask How They Handle Rock and the Unexpected

This is where excavation quotes go sideways, and where honesty shows.

• What happens if you hit rock? In much of Oregon, especially Central Oregon basalt, rock is a real possibility. They should explain ripping or hammering and how it affects cost.
• How do you handle unforeseen conditions? Buried debris, bad soil, a high water table, all should be addressed with transparent change orders, not silence.
• How do change orders work? You want documented, agreed-rate changes with explanation, not surprise add-ons.

A good answer acknowledges that unknowns happen and describes a transparent process. A contractor who promises a flat price on unseen ground and never mentions rock is setting up a dispute.

Ask About Haul-Off, Compaction, and Testing

The technical details that determine whether the work lasts.

• Who handles haul-off and disposal? Spoil has to go somewhere; clarify whether it is included and where it goes.
• How do you compact fill, and do you test it? Proper lift-and-compact and testing are what keep a pad or footing from settling.
• How do you confirm the subgrade is firm? Proof rolling and testing should be part of the answer for structural work.

A good answer describes compacting in lifts, testing where it matters, and a clear plan for spoil. Vague answers here often show up later as settlement or a surprise disposal bill.

Ask About Timeline and Warranty

Finally, the practical commitments.

• What is the timeline, and what could change it? Weather, especially Oregon's wet season, and unforeseen conditions can move dates.
• Do you warranty the grade or the work? Understand what is guaranteed and for how long.
• Who is my point of contact? Know who to call during the job.

A good answer is realistic about weather and gives you a clear point of contact and a stated warranty.

The Oregon-Specific Questions

Add these because Oregon's conditions matter:

• How do you schedule around the wet season? The roughly May-to-October dry window is when serious dirt work is easiest. A pro plans for it.
• What is your experience with my soil? Willamette Valley clay and silt, Central Oregon rock, and coastal sand each behave differently. Local experience matters.
• Have you worked in this county before? Permitting and conditions vary, and local familiarity helps.

A Copy-Paste Checklist

Category	Question
Licensing	What is your CCB number? Are you bonded and insured?
Permits	Who pulls the permit?
Utilities	Who calls 811 before digging?
Rock	What happens if you hit rock?
Unknowns	How do you handle unforeseen conditions and change orders?
Haul-off	Who handles spoil disposal, and is it included?
Quality	How do you compact and test fill and subgrade?
Timeline	What is the schedule, and what could change it?
Warranty	Do you warranty the grade or work?
Oregon	How do you schedule around the wet season?

Asking these of more than one contractor also helps you compare fairly, which is the point of our why get multiple excavation bids spoke.

Red Flags in the Answers

The questions matter, but so does how a contractor answers them, and a few responses should make you pause regardless of the price quoted. Cash-only pressure and reluctance to put anything in writing is the classic one -- a legitimate Oregon contractor works on a written estimate and is comfortable with a paper trail. A demand for a large up-front deposit before any work begins is another; Oregon's CCB has guidance on this, and a contractor who wants most of the money before the machine arrives is taking on your risk, not theirs. Vagueness about the CCB number, or a number that does not check out as active when you look it up, ends the conversation. So does any version of "we don't really need a permit for this" on work that plainly triggers one, or shrugging off the 811 call. None of these are about being difficult -- they are the specific behaviors that precede the disputes and abandoned jobs the CCB hears about.

Ask for References and Recent Work

Round out the interview by asking for proof the contractor has actually done your kind of job nearby. Ask for a few recent local references and, ideally, addresses or photos of comparable work -- a steep hillside driveway, a stepped foundation, a wet-ground pad, whatever matches yours. A contractor with real Oregon experience can point to jobs on similar soil and slope without hesitation. References also let you ask the questions an estimate cannot answer: did the crew clean up, did the final grade drain correctly through the first winter, did the price hold or balloon with change orders. On excavation in particular, the work disappears underground, so a track record of pads and grades that held up through a few wet seasons is worth more than any single answer in the interview.

The Bottom Line

The right questions separate a contractor who will do the job right from one who will leave you with a settling pad and a surprise bill. Confirm the CCB number, insurance, and bond; nail down permits, 811, rock handling, haul-off, compaction, timeline, and warranty; and ask the Oregon-specific questions about wet-season scheduling and local soil. A good contractor welcomes every one of these. Cojo is CCB licensed and insured, established in 2009, and happy to answer all of it. See our excavation services and request a free estimate to start with a site visit.