Fill Dirt in Ontario, CA

In Ontario (Riverside-San Bernardino metro) delivered fill dirt usually runs between $8 and $20 per cubic yard, which roughly equals $10 to $30 per ton depending on moisture and density. Prices vary by supplier, load size, and delivery distance, so check our site for live pricing and call for a quote if you need exact numbers.

Hello Gravel's minimum order is 3 tons. Many local suppliers offer free delivery within a service area, but small orders, long haul distances, or next-day requests may incur fees; the checkout will show any delivery charges for your zip code.

For driveway subgrade and structural fills in the Ontario area aim for 90-95% compaction (standard Proctor equivalent) using mechanical equipment. Place fill in 6-8 inch lifts and compact each lift with a plate compactor, vibratory roller, or sheepsfoot roller; moisture conditioning helps achieve target density in hot, dry climates.

Estimate cubic yards first (length x width x depth in feet, divided by 27), then multiply by roughly 1.1 to 1.3 to convert to tons (typical rule: 1 cubic yard ≈ 1.2 tons for common fill dirt). Example: a 12 ft x 40 ft driveway at 6 inches deep is about 4.4 cubic yards or roughly 5 to 6 tons of fill dirt.

In Ontario's hot, dry climate fill dirt tends to dry, shrink, and produce dust if not compacted and covered; initial settlement is common during the first year. Minimize issues by properly compacting lifts, applying a surface cover (gravel, mulch, or seed), and using dust control measures like watering or tackifiers during installation.

Use generic fill dirt for bulk grade adjustments and non-structural areas where drainage and bearing are not critical. For driveways, footings, and retaining walls choose engineered fill or compacted road base because these materials have controlled gradation and compaction specifications that provide better load-bearing, drainage, and long-term stability.

Small residential top-ups often do not require a permit, but any large grading, changes to drainage, or retaining walls may need a grading permit or plan check from the City of Ontario or San Bernardino County. Always check with the local Building and Planning Department before importing large volumes or altering site grades to avoid compliance issues or required inspections.

Most dump-truck deliveries do not include compaction; tailgate spreading may be available at the driver's discretion but compaction is usually a separate service. Hello Gravel can help coordinate local compaction contractors or advise on when to schedule mechanical compaction after delivery for best results.

Expect some settling during the first months to year; plan on a final top dressing (gravel or soil) after initial settlement. For driveways, periodic regrading and adding 1 to 3 inches of surface material every few years may be necessary depending on traffic; ensure drainage is maintained to limit erosion and rutting.

Protect drainage patterns by maintaining positive slopes away from structures and installing swales, french drains, or riprap where concentrated flows occur. Use silt fences during delivery or grading, avoid stockpiling near storm drains, and follow local stormwater rules; these measures reduce erosion, sediment runoff, and potential code issues during occasional heavy SoCal storms.