Quick Verdict
To compare excavation bids fairly, you have to normalize them to apples-to-apples before you ever look at the totals. Match the scope, the fill quantities, the haul assumptions, who pulls the permits, and the contingencies. Only then does the bottom-line number mean anything. The trap in Oregon is that one bid handles rock, dewatering, and 811 locates and another quietly excludes them, so the low number is fake until you add the missing items back. A simple normalization checklist turns three confusing quotes into a real comparison.
Why You Cannot Just Compare Totals
Three excavation bids are almost never priced on the same scope. One includes rock excavation; another excludes it. One assumes you supply fill; another imports it. One pulls the permits; another leaves that to you. If you line up the bottom-line totals without checking those assumptions, you are comparing different jobs.
The lowest total is often the one that left the most out. Getting several bids is the right move, but only if you normalize them. Our why you should get multiple excavation bids article covers why three is the sweet spot, and this one covers how to compare them. Both sit inside our excavation cost and hiring guide.
Normalize the Scope First
Before anything else, make sure each bid is for the same work. Read the scope lines side by side and ask:
- Does each bid cover the same area and depth?
- Does each include the same tasks (strip, dig, haul, backfill, compact, grade)?
- Are there phases one bid includes and another defers?
If the scopes do not match, fix that before comparing dollars. A bid that "forgot" the compaction or the final grade looks cheaper because it is doing less.
Match the Fill Quantities and Haul
Dirt math is where bids drift apart. Two contractors can estimate different fill quantities and different haul-off for the same lot.
| Item | Question to Ask |
|---|---|
| Import fill | How many cubic yards, and at what rate? |
| Export / haul-off | How many loads, and to where? |
| Disposal | Who pays the dump fee, and is it in the price? |
| Compaction | Is compacted fill assumed, or loose? |
Confirm Permit Responsibility
Permits are a common gap. One bid may include pulling the county permit and any erosion-control plan; another may assume you handle it. That is a real cost and a real hassle. Make every bid state who is responsible for permits, and price the difference in when one excludes it.
Check the Contingencies: Rock, Water, 811
This is the Oregon-specific killer. The same lot can have rock, a high water table, or buried utilities, and how each bid handles those determines whether the low number is real.
- Rock. Does the bid include rock excavation, exclude it, or carry a unit-price allowance? An excluded rock clause means the price grows if rock appears.
- Dewatering. On wet ground, does the bid include pumping or managing water?
- 811 locate and utility risk. Does each bid handle locating and working around utilities the same way?
If one bid prices these and another excludes them, the cheap bid is not cheaper; it is incomplete. Our why the cheapest excavation bid is risky article digs into that trap.
The Normalize-the-Bids Worksheet
Here is how a low bid rises once you add the missing items back. This is an illustration of method, not fixed pricing.
| Line | Low Bid (as written) | After Normalizing |
|---|---|---|
| Base excavation | Lowest | Same |
| Rock allowance | Excluded | Added back |
| Import fill | Less assumed | Matched to others |
| Permit pull | Not included | Added back |
| Haul / disposal | Underestimated | Matched to others |
| Real comparable total | Looks cheapest | Often moves up the list |
Cost Discipline
These are the baseline ranges behind the items you are normalizing, not fixed prices.
| Driver | Baseline Range |
|---|---|
| Excavator + operator, hourly | $150 - $350+ per hour |
| Dump truck haul-off, per load (10-14 cu yd) | $250 - $750+ per load |
| Fill dirt, delivered, per cu yd | $20 - $75+ per cu yd |
| Residential permit pull | $100 - $600+ (varies by jurisdiction) |
| Dump / disposal fee | $75 - $300+ per load |
These are industry baseline ranges for planning only -- actual pricing depends on site conditions, soil, access, depth, haul-off, and current market conditions. Get a site-specific quote.
Current Market Reality
Real costs often run 2 to 3 times an optimistic low bid once rock, dewatering, unmarked utilities, permits, or disposal hit. A normalized comparison surfaces those risks before you sign, instead of as change orders after.
Questions That Surface Hidden Exclusions
Ask every bidder the same questions and watch where the answers differ:
- What is specifically excluded from this price?
- How do you handle rock if you hit it?
- Who pulls and pays for permits?
- How much import fill is in this number?
- What happens to your price if the site is wetter than expected?
Beyond the Number: What Else to Weigh
Once the bids are normalized and the totals are comparable, price is not the only thing that matters. The contractor's licensing, insurance, and track record are part of the value. In Oregon, working with a CCB-licensed and insured contractor protects you if something goes wrong, and that protection is worth real money even if it is not a line item on the bid.
Also weigh communication and clarity. A contractor who walked your site, wrote a clear scope, and answered your questions straight is showing you how the job will go. A bid that is vague, slow to arrive, or evasive about exclusions is a preview of the project. Once the numbers are apples-to-apples, these softer factors often decide which bid is actually the best choice, not just the cheapest comparable one.
Watch for Bids That Are Too Good
When one normalized bid still comes in far below the others, treat it as a warning, not a win. A genuinely lower price can happen, but a number well under the pack usually means something is missing, underestimated, or about to become a change order. The bidder may have misread the soil, lowballed the haul, or excluded a risk the others priced.
The pattern across Oregon sites is consistent: the bid that ignored rock, dewatering, or proper compaction looks cheapest until those realities hit, and then it climbs past the others. Asking the low bidder to explain how they got there, and confirming they scoped the same risks, protects you. A bid that cannot explain its low number, or that waves off rock and water, is the one most likely to surprise you mid-job.
The Bottom Line
A fair comparison normalizes scope, quantities, haul, permits, and contingencies before you trust any total. Do that and the genuinely best value, not just the lowest number, becomes clear. Our excavation services team writes bids with the scope and exclusions spelled out so you can compare honestly. To get a clear, scoped bid for your project, request a free estimate.