Buy Fill Dirt in San Francisco, CA

Planning a driveway, a patio base, or a drainage run? Start with gravel and aggregate delivery in San Francisco, CA from California Rock Supply. You lay the job out, we drop the material where you need it. Most projects here start with Class 2 base under the finished surface, with fill dirt and topsoil shaping the grade first.

San Francisco sits in the Coast and Coast Ranges ground zone, where soils change over short distances. That means a yard in one part of the city can run sandy while another sits on heavy clay.

Materials for San Francisco Projects

Grading and bed prep come first on most jobs. Fill dirt raises grade and backfills before anything else goes down. Screened topsoil rebuilds planting areas over clay or sandy native ground, and garden soil fills raised beds. Get that layer right and the rest of the job follows.

Under hard surfaces, Class 2 base is the standard California material, specified by Caltrans as Class 2 aggregate base. It compacts into the pad under pavers, slabs, and Stone Screenings paths. Recycled base rock does the same job when you want Road Base or asphalt instead.

For drainage, 3/4 inch drain rock is clean stone with no fines, so water moves through it. Use it in French drains and drainage trenches. Rip rap armors slope and culvert outlets against winter storm runoff.

On top, driveway gravel surfaces an existing drive or caps a compacted base. Stone Screenings packs firm for paths and patios, and river rock or cobble handles dry creek beds and decorative beds. Mason sand and washed sand cover brick work, paver joints, and bedding under slabs.

Ground and Conditions in San Francisco

Most rain here falls from late fall to spring, often in a few large winter storms. Sandy ground soaks it up fast. Clay soil sits under it and swells, and slopes shed it downhill.

That drives two decisions. On clay, excavate deep enough and compact Class 2 base in lifts so the pad does not pump or shift after a wet winter. Where water collects, add a drainage layer of clean stone instead of fines.

Steep slopes and shoreline bluffs take the worst of winter storms, with runoff and slides where the ground is saturated. Rip rap at culvert outlets and slope toes keeps that water from cutting the grade out from under your work.

The dry season from late spring into fall is the main window for base, driveway, and paver work. Summer fog near the shore is not the problem. Winter rain and saturated clay are what hold jobs up, so plan grading and compaction for the dry months.

Delivery to San Francisco and the Surrounding Area

Bulk material arrives by dump truck. Have the drop spot clear before the truck gets there, and check for overhead wires, low branches, and parked cars on the approach. A firm, level pad keeps the load where you want it.

Order online and use the calculator to size the load. Base, sand, and soil are usually ordered by the ton, and the calculator converts your square footage and depth into the quantity you need. Measure the area first so the numbers are right.

California Rock Supply delivers across San Francisco and the rest of San Francisco County, with delivery throughout California.

Order Fill Dirt, Topsoil, and Base for Your San Francisco Job

Grading, bed prep, driveways, patio bases, and drainage runs all start with the right material. California Rock Supply delivers fill dirt, topsoil, garden soil, Class 2 base, drain rock, and more across San Francisco. Size your load with the calculator and place your order online.