Fill Dirt in Antioch, CA

Delivered fill dirt in Antioch typically ranges from about $15 to $45 per ton, depending on supplier, truck type, and how far material must travel. Hello Gravel has a 3-ton minimum order and offers upfront quotes that include delivery, so check your zip code and request a quote for an exact price.

For Antioch’s mix of clay and sandy soils, choose clean, low-organic fill dirt or engineered structural fill with good grading and minimal organic matter. Suppliers often offer regionally sourced fill that will match local conditions; for improved stability, consider a blend with crushed rock or granular borrow where compaction and drainage are critical.

Fill dirt is useful for rough grading and raising grade but is not a drainage material on its own because it can be fine-textured and slow-draining. For better drainage in Antioch’s wet winters, combine fill dirt with a drainage layer such as crushed rock, install proper slope and surface drains, or use engineered fill in low spots.

To raise 1,000 sq ft by 6 inches you need about 18.5 cubic yards of material (1,000 x 0.5 ft = 500 cu ft; 500 / 27 = 18.52 cu yd). That equals roughly 20 to 24 tons of fill dirt depending on moisture and compaction (a good estimate is about 1.1 to 1.3 tons per cubic yard).

Fill dirt is generally not recommended directly under concrete slabs because it can contain fine particles and organic matter that compress or shift. For stable slab support in Antioch, use compacted crushed rock or engineered base material and follow local code or engineer recommendations; if fill is unavoidable, have it tested and compacted to engineered specifications.

Local rules in Antioch and Contra Costa County can restrict the type of backfill allowed behind structural retaining walls, often requiring free-draining material and weep/drain systems. Always check with the City of Antioch Building Department or your engineer before installing backfill; Hello Gravel recommends confirming permit requirements for retaining walls and other structural uses.

Hello Gravel’s standard lead time is 2+ business days for delivery, with an optional next-day delivery if ordered before noon CST for an extra fee. Minimum orders are 3 tons; exact scheduling and fees depend on local supplier availability and truck access at your site.

Fill dirt is usually cheaper per ton than crushed rock but provides poorer drainage and compaction for driveways, so it will generally shorten the life of the driveway. Crushed rock or class II base is the preferred material for driveway bases in Antioch because it compacts well and sheds water, giving better long-term performance despite higher up-front cost.

For slopes, ask for mechanical compaction and staged lifts (placing and compacting in 4-6 inch layers) and consider geotextile fabric or erosion control blankets where needed. Hello Gravel can note spreading requests at checkout, but professional compaction and slope stabilization should be contracted separately with a qualified installer or engineer for safety and longevity.

Expect some settlement within weeks to months after placement, with most post-installation settling happening during the first rainy season; allow 1 to 3 months before final grading if material was not fully compacted. To minimize regrading, use proper compaction during installation and schedule any finish grading after the first major wet/dry cycle.