Stony Point Rock Quarry

What Stony Point Rock Quarry does

Stony Point Rock Quarry is a Cotati, California-based aggregate mining and construction materials supplier that has operated continuously since joining the Soiland Materials family in 1973. The quarry extracts and processes basalt into core construction products — basalt aggregate, rock, sand, aggregate base, rip rap, and pathway materials — and additionally runs a rubble-to-recycled-aggregate processing line under the Stony Point Recycling sub-brand. Its operations are solar-powered, supporting both cost efficiency and positioning for sustainability-aligned infrastructure bids. The site also serves as a customer drop-off and pickup point during weekday business hours, integrating production with direct-to-customer distribution.

The company serves three primary customer segments across the Sonoma County and broader North Bay region of Northern California: infrastructure projects (roads, foundations, public works), the construction industry (commercial and residential general contractors), and landscaping projects (pathways, decorative rock, rip rap). Its customer base spans enterprise and mid-market buyers, with no named anchor accounts disclosed. Distribution runs through direct phone sales, an online quote-request system, and physical quarry pickup, with the broader Soiland Materials network adding four sister locations (Stony Point, Soils Plus, Green Recycling Center, Yard & Garden) for cross-selling soils, landscaping, and recycled products.

The business model is asset-heavy commodity materials production with regional pricing set via direct quote; pricing is not publicly disclosed. Stony Point Rock Quarry operates as a wholly-owned location within Soiland Materials, a privately held, founder/family-controlled LLC domiciled in California with no institutional investor involvement, no public listing, and no disclosed M&A activity. Capital intensity, a 50-year permitting track record, and a strategic Cotati footprint constitute the primary defensible characteristics of the operation.

Name

Stony Point Rock Quarry

Legal name

Soiland Materials

Website

https://stonypointrockquarry.com

Company type

Private

Founded year

1973

Operating status

Operating

Headcount range

101–250 employees

Short description

Stony Point Rock Quarry is a Cotati, California basalt aggregate and recycled construction materials producer, part of the Soiland Materials family since 1973, supplying rock, sand, base, rip rap, and pathway products to infrastructure, construction, and landscaping customers across Sonoma County and the North Bay.

Ownership category

akta.pro rank

Product category

Construction Aggregates

NAICS

Nonmetallic Mineral Mining and Quarrying (2123), Stone Mining and Quarrying (21231), Construction Sand and Gravel Mining (212321)

SIC

Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400)

akta.pro primary industry

Crushed Stone Quarrying & Processing (IMAKAHAA)

akta.pro secondary industries

Aggregate Processing & Value-Added Products (Washing, Screening, Asphalt/Concrete Aggregates) (IMAKAHAH), Construction Aggregates Mining & Processing (Sand, Gravel, Crushed Stone) (IMADAAAI), Specialty Aggregates (Rail Ballast, Riprap/Armor Stone, Gabion Stone) (IMAKAHAJ), Sand & Gravel Extraction & Processing (IMAKAHAB)

Keywords

• Construction aggregate supply
• Basalt aggregate production
• Recycled construction materials
• Rip rap and pathway materials
• Quarry operations mining

Headquarters

HQ city

Cotati

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Infrastructure, Others

Distribution channels3 records

Marketing channels3 records

Core offering

Stony Point Rock Quarry produces basalt aggregate, rock, sand, aggregate base, rip rap, and pathway materials from its Cotati, California quarry, and also processes rubble into recycled construction materials. The quarry supplies these products for infrastructure, construction, and landscaping projects across Sonoma County and the North Bay region. The site is powered in part by solar energy and supports Soiland Materials' recycling and sustainability operations.

Product overview

Stony Point Rock Quarry operates as part of the Soiland family since 1973, producing high-quality basalt aggregate and recycled construction materials. The quarry supplies rock, sand, aggregate base, rip rap, and pathway materials used in infrastructure, construction, and landscaping projects across Sonoma County and the North Bay. The product portfolio centers on its core aggregate offerings (Basalt Aggregate, Rock, Sand, Aggregate Base, Rip Rap, and Pathway Materials), complemented by Recycled Construction Materials derived from processing rubble into reusable aggregate. All products serve infrastructure, construction, and landscaping applications with an emphasis on sustainability through recycling operations.

Differentiator

Problem solved

Functional benefit

Brands

• Stony Point Materials: Product brand for aggregate and quarry materials produced at Stony Point Rock Quarry.
• Stony Point Recycling

Products and services

• Basalt Aggregate High-quality basalt aggregate produced at the Stony Point Rock Quarry location in Cotati, CA, used for infrastructure, construction, and landscaping projects across Sonoma County and the North Bay region.
• Rock Various rock materials supplied for construction and landscaping applications across Sonoma County and the North Bay region.
• Sand Sand products available for construction, landscaping, and infrastructure projects.
• Aggregate Base Aggregate base materials used as foundational components in road construction and infrastructure projects.
• Rip Rap Large stone materials used for erosion control, shoreline protection, and hydraulic engineering applications.
• Pathway Materials Specialized materials designed for pedestrian pathways, trails, and landscaping walkways.
• Recycled Construction Materials Rubble materials processed into reusable aggregate products, supporting sustainability efforts and the quarry's recycling operations.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators2 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• BoDean Company: Santa Rosa-based aggregate and asphalt producer serving Sonoma and Marin counties with crushed stone, sand, and recycled materials—directly comparable on North Bay geography, basalt aggregate production, and recycled product offering.
• Syar Industries: Northern California aggregate producer operating quarries across the Bay Area and North Bay, supplying rock, sand, and asphalt materials to construction and infrastructure customers—the closest direct comparable to Stony Point in geography and product mix.
• Graniterock: Northern California-based aggregate, asphalt, and construction materials producer serving the Bay Area and Central Coast—comparable as a regional crushed stone and aggregate producer with similar customer verticals.

Broad incumbents

• Lehigh Hanson: Major North American producer of aggregates, cement, and ready-mix concrete with operations across the western U.S.—comparable as a broad incumbent in crushed stone and construction materials serving similar end markets.
• Granite Construction: Large publicly traded construction materials and infrastructure company operating aggregate quarries, asphalt plants, and construction services across California—comparable through aggregate production and infrastructure customer base, though vastly larger scale.
• CEMEX: Global building materials company with aggregate, cement, and ready-mix operations throughout California—comparable as a broad incumbent supplying aggregates and related construction materials in overlapping geographies.
• Martin Marietta Materials: Large U.S. producer of aggregates and heavy building materials with West Coast operations—comparable as a scaled incumbent in crushed stone, sand, and gravel serving infrastructure customers.
• Vulcan Materials Company: The largest U.S. producer of construction aggregates, operating hundreds of quarries nationwide, with significant California presence—comparable as the dominant incumbent in crushed stone and aggregate production.

Regional players

• CalPortland Company: Western U.S. producer of cement, ready-mix concrete, and construction aggregates serving California markets—comparable as a regional aggregate supplier serving similar California infrastructure customers.
• DeSilva Gates Construction: Northern California-based aggregate producer and construction contractor operating quarries in the Bay Area—comparable as a regional aggregate supplier serving similar infrastructure and construction customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/SoilandMaterials
• LinkedInlinkedin.com/company/stony-point-rock-quarry-inc
• Instagraminstagram.com/soilandmaterials

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stony Point Rock Quarry