Recycled Class 2 base rock costs about $12 to $28 a ton picked up at a Northern California recycling yard, roughly 20 to 30 percent less than virgin quarried rock, and it meets Caltrans Class 2 specifications when the yard runs the required gradation and R-value testing on the batch. Delivered pricing runs higher once trucking is added, usually another $6 to $15 a ton depending on distance from the yard.
That price gap surprises people who assume "recycled" means lower quality. It doesn't, provided the material comes from a yard that actually tests its output. A driveway pad, a rural road shoulder, or a foundation sub-base doesn't care whether the crushed rock under it started life as a quarried stone or a demolished parking lot. It cares whether the material compacts, drains, and holds its shape under load. Properly processed recycled concrete and asphalt does all three.
What recycled base rock actually is
Recycled Class 2 base rock comes from crushed concrete and asphalt, usually demolition debris or old pavement, run through a crusher and screened down to a consistent gradation. It's the same material CalRecycle tracks as construction and demolition debris diversion, material that would otherwise take up landfill space and instead gets turned back into something usable. Walberg, Inc. runs this material through our concrete and asphalt recycling yard in Corning, where clean concrete and asphalt from demolition jobs across Tehama, Butte, and Shasta counties gets crushed, screened, and stockpiled for resale.
The finished product looks like standard 3/4-inch minus base rock. It's a mix of crushed stone, sand, and fines, angular enough to lock together under a compactor instead of rolling around like round river gravel. That angularity is what makes crushed rock, recycled or virgin, work as a base material in the first place.
What drives the price
Four things move the number on a given day: volume, gradation, distance, and whether you're picking up or having it delivered.
Volume discounts kick in fast. A pickup truck load off the yard costs more per ton than a 20-ton dump truck load, because loading and scale time cost roughly the same either way. Contractors buying by the truckload consistently pay less per ton than homeowners buying by the yard.
Gradation matters because not every batch coming off the crusher is the same. A load with more fines (the sand-sized particles that fill voids between larger rock) compacts differently than a coarser load, and yards sometimes price finer, more consistent gradations slightly higher because they take an extra screening pass.
Distance is the other half of delivered pricing. Trucking a load 10 miles from the yard costs a lot less than trucking it 40 miles, and on a big job that difference adds up to real money fast.
| Factor | Recycled Class 2 base rock | Virgin quarried base rock |
|---|---|---|
| Typical cost, picked up | $12 to $28 a ton | $25 to $45 a ton |
| Typical cost, delivered | $18 to $40 a ton | $30 to $55 a ton |
| Compaction performance | Comparable when properly graded | Consistent, well-documented |
| Caltrans Class 2 eligible | Yes, with certified test data | Yes, standard spec material |
| Best for | Driveways, house pads, rural roads, fill under slabs | Public agency jobs requiring virgin-only spec, jobs with tight gradation tolerances |
| Where it comes from | Crushed concrete and asphalt from local demolition | Quarried stone, often trucked further |
Does it hold up to Caltrans and county standards
Yes, but not automatically. Caltrans allows recycled concrete and asphalt in Class 2 aggregate base under its Section 26 specifications, provided the contractor submits certified test data showing the material meets the same quality requirements as virgin rock, including a minimum R-value of 78 and compliant gradation and Sand Equivalent results. That approval has to happen before the material goes into a Caltrans job, not after.
For a private driveway, house pad, or ranch road, you're not dealing with Caltrans directly, but the same underlying question applies: does the batch you're buying have test data behind it? A yard that runs regular gradation and R-value testing on its output can tell you where a given batch stands. A yard that just crushes and stockpiles without testing is selling a product nobody's verified.
If your project does fall under a public agency contract, a county road job, or anything built to Caltrans standards, ask for the test reports before you order, not after the load shows up.
How much you need for a driveway or house pad
Base rock is typically laid 4 to 8 inches deep depending on the soil underneath and what's going on top of it. A driveway on decent native soil might only need 4 inches of compacted base. A house pad on soft or expansive soil, or a section that'll carry heavy equipment, often calls for 6 to 8 inches, sometimes more if a geotechnical report calls for it.
Rough math: a 12-foot-wide, 100-foot driveway at 6 inches deep needs about 22 cubic yards of base rock before compaction, and compacted material typically shrinks 15 to 25 percent from its loose volume, so you're ordering more than the finished number suggests. For anything beyond a small residential driveway, get a cut sheet from whoever's doing the grading or house pad work rather than eyeballing it. Ordering short means a second delivery at a worse per-ton rate; ordering heavy means paying to haul off what you didn't use.
Picking up at the yard versus having it delivered
A contractor already running trucks between a job site and the yard often does better buying picked-up material and hauling it themselves, especially on a job close to Corning. A homeowner without a dump truck, or a job 30-plus miles out, usually comes out ahead paying for delivery even at the higher per-ton rate, once you account for renting or borrowing a truck and the time it takes.
There's a middle case worth knowing about: if you've got a demolition project generating your own concrete or asphalt, it can come back to you as base rock instead of getting sold off the yard to someone else. That only works when the material qualifies as clean, no contamination, no mixed waste, and the volume justifies the trip. Our concrete and asphalt recycling page covers what the yard accepts, and our mobile concrete crushing page covers when it makes more sense to crush on-site instead of hauling to the yard at all.
When virgin rock is worth paying more for
Recycled base rock isn't the right call on every job, and it's worth saying so plainly. Some public agency specs still require virgin aggregate outright, regardless of what test data a recycler can produce, and no amount of R-value testing changes that requirement. Jobs needing an unusually tight, consistent gradation for a specialized application sometimes do better with quarried rock, since crusher-run recycled material varies batch to batch more than a quarry's controlled output.
And if you need a very specific volume on a tight schedule, a yard's recycled stockpile depends on what demolition debris has come through recently. Virgin rock from a quarry is a more predictable, always-available supply. For a rancher off Corning Road building an equipment pad, that's rarely a concern. For a general contractor on a deadline with a narrow spec sheet, it's worth a phone call to confirm what's in stock before you commit.
Common Questions
Is recycled base rock as strong as virgin base rock?
Properly processed and tested recycled Class 2 base rock performs comparably to virgin rock for compaction and load-bearing under a driveway, house pad, or rural road. The angular shape from crushed concrete and asphalt locks together under a compactor much like crushed virgin stone does. The difference shows up in consistency: a quarry's output varies less batch to batch than a recycler's, which depends on what demolition material has come through.
Can I use recycled base rock under a house foundation?
Yes, provided it's compacted to the spec your engineer or building department requires and passes a compaction test before framing starts. The material itself isn't the limiting factor; proper compaction and moisture control at the time of placement is what actually determines whether a pad performs.
How is recycled base rock different from crushed concrete used in mobile crushing?
They're often the same material at different points in the process. Mobile crushing produces crushed aggregate on-site from your own demolition concrete, usually for immediate reuse on that job. Recycling yard base rock comes from a stockpile built up from multiple demolition jobs, crushed, screened, and sold by the ton to anyone who needs it, not just the project that generated the raw material.
Does buying recycled base rock save money on a small residential job?
Usually, yes, though the savings are smaller in dollar terms on a small load because you're already paying more per ton at low volumes regardless of material type. The percentage savings, 20 to 30 percent versus virgin rock, holds fairly steady whether you're buying two tons or two hundred.
What happens if a load of recycled base rock doesn't compact right?
That's almost always a moisture or contamination issue rather than a material grade problem. Base rock that's too dry won't lock together under a compactor; too wet and it shoves instead of compacting. If a load keeps failing a compaction test after normal moisture conditioning, ask the yard whether that batch had a gradation or fines-content issue, and get a fresh sample tested before bringing in more material.
The bottom line
Recycled Class 2 base rock is the cheaper, equally capable choice for the overwhelming majority of driveways, house pads, and rural road jobs in Tehama, Butte, and Shasta counties, as long as it's coming from a yard that tests what it sells. The exception is public agency work with a virgin-only spec or a job that needs a guaranteed, always-in-stock supply on a tight schedule. Know which category your project falls into before you order, and ask for test data either way.
If you've got a driveway, pad, or fill job coming up and want to know what our yard has on hand and what it'll cost delivered to your site, request a free estimate and we'll get you a number before you order anywhere else.