Fill Dirt in San Dimas, CA

Local pricing for fill dirt in the San Dimas area varies by source, screening, and truck haul distance. Expect a rough range of $15 to $45 per cubic yard (about $10 to $35 per ton) delivered, with recycled or unscreened material toward the low end and clean, screened fill toward the high end. Get an exact delivered price and any disposal/contamination fees by requesting a quote through Hello Gravel for your zip code.

Yes — landscape yards and material recyclers near San Dimas commonly offer both screened (clean) fill and cheaper unscreened fill. Screened fill is sifted to remove large debris and organics, making it better for landscaping and under patios, while unscreened fill is fine for bulk grade raising where appearance and fine contaminants matter less. Ask the supplier for a sample photo and whether the material contains organics or construction debris before ordering.

Volume depends on the area. For example, a common backyard of 50 ft x 100 ft (5,000 sq ft) raised 6 inches (0.5 ft) requires 5,000 x 0.5 = 2,500 cubic feet, or about 92.6 cubic yards (round to 93 yd3). With fill dirt densities ranging roughly 1.0 to 1.4 tons per cubic yard, that equals about 93 to 130 tons, so use the material calculator or ask Hello Gravel for a precise estimate for your dimensions.

Generally no — plain fill dirt is not ideal as a driveway base in San Dimas because it can settle, hold moisture, and lacks structural strength for vehicle loads. For driveways in this Southern California climate, contractors typically use a compacted engineered base or crushed rock (road base) beneath the surface material to provide drainage and load-bearing capacity. If you plan to use fill dirt, place it only as grade-building material and finish with proper base materials designed for driveways.

For structural or foundation backfill, aim for 90% to 95% relative compaction (per common compaction tests); your project engineer or building department will specify the exact requirement. Compact in 4 to 6 inch lifts using a plate compactor for small areas or a vibratory roller/sheep's foot roller for larger fills, and have a geotechnical engineer or testing lab verify compaction when required by permit. For non-structural landscaping fills, lighter compaction is often acceptable, but you should still compact lifts to minimize future settling.

Permit requirements vary by project scope; many grading, drainage, and structural projects in San Dimas or Los Angeles County require engineered fill or materials meeting specified gradation and compaction standards. Before ordering, check with the City of San Dimas Building & Safety or your civil engineer to confirm whether a geotechnical recommendation or verified engineered fill is needed. If a permit is required, suppliers can often provide documentation about material source and gradation, but final acceptance is determined by the project inspector or engineer.

In San Dimas's Mediterranean climate, winter rains can cause loose, organic-rich fill dirt to erode, settle, or retain moisture, which may affect grading and landscaping. Properly compacted, non-organic fill with attention to slope stabilization and drainage will perform much better; consider erosion control (e.g., straw wattles, mulch, or hydroseed) and positive drainage away from structures. For areas exposed to repeated wetting or vehicle traffic, choose engineered base materials instead of plain fill dirt to reduce long-term settlement.

Watch for visible organics (roots, sod), construction debris (concrete, asphalt, trash), and high clay content that can impede drainage and increase settlement. Ask suppliers about the source, whether the material is screened, and if they offer a plain-visual inspection or sample before delivery. For projects under slabs, near storm drains, or requiring permits, avoid materials with organics or debris and request documentation or testing if needed.

Fill dirt is intended for bulk grade-raising and is not engineered to carry loads or provide good drainage; crushed rock or engineered base is compactable, drains well, and distributes loads, making it a much better choice for driveways and patios. Use fill dirt to build up elevations, then install a compacted crushed-rock or engineered base layer under paving or structural surfaces. For long-term performance and fewer maintenance issues in San Dimas, choose engineered base materials where loads and drainage matter.

Most suppliers serving the West California area use tri-axle dump trucks and require a minimum order; Hello Gravel's minimum is 3 tons and standard delivery is typically 2+ business days with next-day options when available. Deliveries may include optional tailgate spreading at the driver's discretion — request it at checkout but expect the driver to assess feasibility upon arrival. Always confirm access, overhead clearance, and preferred drop location when you place your order to avoid delays or extra fees.