Construction Aggregates
Build a stronger foundation with high-quality construction aggregates delivered across Marin, Alameda, Sonoma, San Francisco, San Mateo and Contra Costa counties by North Bay Materials. We supply crushed rock, drain rock, gravel, road base, rip rap, class II permeable base, construction sands and back-fill dirt—essential materials for driveways, foundations, pathways, drainage systems, and roadwork. Our bulk aggregate delivery service provides reliable, same-week dump-truck delivery directly to your jobsite or home, helping contractors and homeowners save time and transportation costs. Whether you’re paving a driveway in San Rafael, grading a site in Novato, or reinforcing slopes in Santa Rosa, our locally sourced materials meet Caltrans and ASTM standards for strength and consistency. Order online or request a quote today for fast, dependable delivery of construction-grade rock, sand, and fill from a trusted North Bay supplier.
What Are Construction Aggregates?
Construction aggregates are the raw granular materials—such as crushed stone, gravel, sand, screened dirt and recycled concrete—used to form the base and structure of most construction and landscaping projects in the Bay Area. They provide strength, stability, and drainage for everything from roads and building foundations to retaining walls and driveways.
Common types include:
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Base Rock (Class II Virgin or Recycled): Used under pavements and slabs for load support
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Drain Rock : Promotes water flow in French drains and retaining wall backfill
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Crushed Gravel (Class II Permeable): Compactable and ideal for pathways and parking areas
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Construction Sand (Utility, Paver, Masonry): Used for leveling, mixing, or bedding
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Rip Rap or Boulders: Large angular rock for slope and erosion control
