How to Hire an Excavation Contractor in Portland: What to Check Before You Sign

Excavation work is one of those trades where hiring the wrong contractor costs you twice — once to pay them, and again to fix what they did wrong. A poorly graded building pad, an under-compacted trench, a drainage system installed at the wrong slope — these mistakes get buried (literally) and don't reveal themselves until months or years later when your foundation cracks, your driveway sinks, or your crawlspace floods.

Portland has hundreds of contractors who list excavation as a service. Some are excellent. Some shouldn't be operating heavy machinery near your home. Here's how to tell the difference.

The Non-Negotiables

Oregon CCB License

Every contractor performing excavation work in Oregon must hold a current Oregon Construction Contractors Board (CCB) license. This is state law, not a suggestion. The CCB license means the contractor has passed a business exam, carries a surety bond, and has an active insurance policy.

How to verify: Look up their CCB number at the Oregon CCB's online search tool (search.ccb.state.or.us). Check that the license is active (not expired, suspended, or revoked), the business name matches, the license category covers the work (residential, commercial, or both), and there are no unresolved complaints.

Red flag: Any contractor who can't give you a CCB number, gives you one that doesn't check out, or says they don't need one. Walk away. Hiring an unlicensed contractor in Oregon means you have zero protection if something goes wrong — no bond, no insurance, no recourse through the CCB complaint process.

Insurance

The contractor should carry general liability insurance (typically $1 million minimum) and workers' compensation insurance for their crew. General liability protects your property if the contractor damages something — hits a gas line, cracks a neighbor's retaining wall, breaks a sprinkler system. Workers' comp protects you from liability if a crew member is injured on your property.

How to verify: Ask for a certificate of insurance (COI). Any legitimate contractor can produce one within minutes — their insurance company issues them on request. Verify the policy is current (check the dates) and that the coverage amounts are adequate.

Red flag: "I'm insured" without producing a COI. "My employees are independent contractors" (this is often a dodge on workers' comp). Insurance that expired last month.

Equipment Ownership or Reliable Access

Excavation requires specific equipment — excavators, skid steers, dump trucks, compactors, trenchers. Contractors who own their equipment can schedule work on their timeline and aren't passing rental markup to you. Contractors who rent equipment can still do quality work, but rental availability can cause delays, and the cost gets passed through.

What to ask: "Do you own your equipment, or do you rent?" Neither answer is disqualifying, but knowing sets expectations for scheduling and cost.

Red flag: A contractor with no heavy equipment who plans to "figure it out" once the job starts. A contractor who subcontracts the actual digging to someone else — at that point, why aren't you hiring the sub directly?

What to Ask During the Estimate

"Can you walk me through how you'd approach this job?"

A good contractor can explain their process clearly — what equipment they'd bring, where they'd start, how they'd handle soil disposal, what the site will look like at each stage, and how they'll clean up. If they can't explain it, they haven't thought it through.

"What could go wrong, and how would you handle it?"

Rock, high water, bad soil, unexpected utilities, access problems — experienced contractors know what can go wrong because they've dealt with all of it. If they say "nothing will go wrong," they're either inexperienced or dishonest. You want a contractor who names the risks upfront and has a plan for each.

"Who will be on site?"

Will the owner be there? A foreman? How big is the crew? For owner-operated companies, the answer is often "me" — the person you're talking to is the person running the excavator. For larger companies, ask who your point of contact will be and whether they'll be on site daily.

"What's included in your price?"

Get specific. Does the quote include utility locates, permitting, hauling, disposal fees, backfill material, compaction, and site cleanup? Or are some of those extras? The most common surprise on excavation bids is hauling — the quote covers digging but not removing and disposing of the soil, which can add thousands.

"What's your timeline, and what affects it?"

An honest answer includes weather contingency. In Portland, rain delays are real from October through May. A contractor who promises a hard deadline during the rainy season without mentioning weather is setting you up for frustration.

Red Flags That Should Stop the Conversation

No written estimate. A verbal quote means no accountability. Every legitimate excavation contractor provides a written, itemized estimate that spells out what's included.

Demands large upfront payment. A deposit of 10-20% to schedule the job is reasonable. Demanding 50% or more upfront before any work starts is a red flag — if they take the money and disappear, you have no leverage. Progress payments tied to completed milestones are the standard.

No references or photos of past work. If they can't show you completed projects similar to yours or connect you with past clients, there's a reason. Experienced contractors have portfolios of work and happy clients willing to vouch for them.

Significantly lower bid than everyone else. If three contractors bid $8,000 to $10,000 and one bids $4,000, the low bidder is either cutting corners (skipping compaction, using wrong materials, not hauling properly), underestimating the job (and will hit you with change orders mid-project), or unlicensed/uninsured (and absorbing less overhead). The cheapest bid is rarely the cheapest outcome.

Pressure to sign immediately. "This price is only good today" is a sales tactic, not a business practice. A confident contractor gives you a quote and lets you decide on your timeline.

They don't call Oregon 811 before digging. Utility locates before excavation are required by Oregon law. Any contractor who starts digging without calling 811 first is putting your property, their crew, and your neighbors at risk. This is an immediate disqualifier.

How to Compare Bids

When you have estimates from multiple contractors, compare them on scope rather than just price. Line up what each bid includes and doesn't include. The lowest total price might exclude hauling, disposal, or compaction that the higher bids include — making the actual cost higher once those extras are added.

Also compare the detail level. A one-paragraph quote that says "excavation work — $7,500" tells you nothing about what you're getting. A multi-line estimate that breaks out equipment, labor, hauling, material, disposal, and cleanup tells you the contractor has thought through every phase and priced it honestly.

Get a Detailed Estimate

At A&N Construction and Excavation, we provide free, written, itemized estimates for every project. We walk your site, discuss the scope, explain our approach, and give you a clear number with no hidden fees. We're licensed (CCB #268549), bonded, insured, and owner-operated — Alex Nita is on every job.

Call (503) 983-6984 or request a free estimate. We serve Portland, Beaverton, Hillsboro, Tigard, Lake Oswego, Gresham, Oregon City, Milwaukie, Happy Valley, and 15+ surrounding cities.