Fill Dirt in Pittsburg, CA

Fill dirt is subsoil used to raise grade or backfill where you don’t need a finished topsoil layer. In Pittsburg it’s commonly used to level yards, raise building pads, backfill foundations and build drive approaches; it’s not recommended as the final surface for planting without adding topsoil.

Prices vary by supplier and distance from local pits, but typical delivered rates in the Bay Area market for basic fill dirt often fall in the range of about $10 to $40 per ton. Hello Gravel shows transparent, location-specific pricing at checkout and has a 3-ton minimum; call or check your zip code to see exact rates and any delivery fee.

Availability changes by neighborhood and season, so the fastest way is to check your zip code on Hello Gravel, which connects you to trusted local suppliers and haulers that serve Pittsburg. If you prefer, contact our sales team and we can confirm which local vendors can deliver your requested quantity and schedule.

Permit requirements depend on the amount of fill and the work’s impact on drainage or slopes. Small landscaping fills often don’t need a permit, but grading that alters drainage, places large volumes of fill (commonly reviewed when over a few dozen cubic yards), involves retaining walls, or is near a creek/wetland typically requires review by the City of Pittsburg Building Division or Contra Costa County Public Works — contact them before you start.

Pittsburg has a Mediterranean climate with wet winters and dry summers, so proper compaction before the rainy season and good drainage are important to avoid settling and erosion. Design fills with positive drainage, consider a granular base or drainage layer where needed, and schedule major compaction work in dry months whenever possible.

For driveway subgrade, aim for about 90% to 95% relative compaction (Standard Proctor) measured by a compaction test. Typical equipment: plate compactor or smaller vibratory roller for residential jobs in 4- to 6-inch lifts; for heavier loads or deeper fills use a vibratory steel drum roller or sheepsfoot roller and compact in 6-inch lifts. Consider hiring a contractor who can perform field density tests if the driveway will carry heavy vehicles.

Use this quick formula: cubic yards = (square feet x depth in inches) / 324. Then convert to tons by multiplying cubic yards by about 1.2 to 1.5 tons per cubic yard for fill dirt, depending on moisture and compaction. For example, to raise 1,000 sq ft by 6 inches you need ~18.5 cubic yards, or roughly 22 to 28 tons.

On slopes, use a well-graded fill with a mix of sand, fines, and small gravel rather than loose, clean sand; the fines help bind the material after compaction. Compact in thin lifts (4 to 6 inches), limit slope steepness where possible (flatter than 2:1 if unprotected), and add erosion controls such as geotextile, terraces, vegetation, or riprap; for major slopes consult a geotechnical engineer for a site-specific spec.

Fill dirt is best for raising grade and backfill but is not a durable finished surface. Decomposed granite is attractive and compacts well for low-traffic walkways, while crushed rock or crushed stone is the better choice for driveways because it drains well and holds up under vehicle loads. In Pittsburg’s climate choose decomposed granite for decorative paths and crushed rock with a compacted fill base for driveways.

Yes; work near creeks, wetlands, or drainage channels often triggers stormwater and environmental review by the City, Contra Costa County, and regional water boards. Best practices include using silt fences, stabilized entrances, and limiting exposed soil during wet months — contact local public works and the regional water quality control board early to confirm permit or BMP requirements.

Rates depend on access, project size and needed equipment; a typical range in the East Bay is roughly $30 to $80 per cubic yard for hauling, spreading and compacting on smaller residential jobs, or an hourly equipment-plus-operator rate of about $75 to $150 per hour. Always get multiple written quotes and confirm whether the price includes grading, compaction tests and site cleanup.

Check your zip code on Hello Gravel to see local pricing and minimums (3 tons), add access notes and color preferences in Order Notes, and request delivery dates that avoid rainy periods. If you need spreading or compaction, request tailgate spreading at checkout and confirm with the driver on arrival, and contact our team for questions or to coordinate a contractor referral.