Graniterock
Graniterock is a family-owned, Watsonville-headquartered construction materials producer and heavy civil contractor operating 18 quarries, plants, retail, and office locations across Northern and Monterey Bay California since 1900, serving Caltrans, public agencies, contractors, and homeowners.
- Company typePrivate
- Founded1900
- HeadquartersWatsonville, United States
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Graniterock does
Graniterock (legally Granite Rock Company) is a family-owned construction materials producer and heavy civil contractor incorporated in 1900 and headquartered in Watsonville, California. The company operates a vertically integrated California footprint of 18 production, retail, and office locations spanning South San Francisco to King City — anchored by the A.R. Wilson Quarry (Aromas), Quail Hollow Quarry (Felton), and Southside Sand & Gravel (Hollister), supplemented by concrete, asphalt, and recycled-materials plants in Redwood City, San Jose, Salinas, Santa Cruz, Seaside, and South San Francisco, plus Graniterock Supply retail branches in the Monterey Bay and San Francisco Bay areas.
The product and service portfolio centers on construction aggregates (granite, sand, river rock, recycled baserock), hot mix asphalt and emulsions, ready-mix concrete supported by over 1,000 developed mix designs, and environmentally responsible products qualifying for LEED credits. Beyond materials supply, Graniterock operates a Construction Division providing heavy civil services — paving, excavating, grading, partial depth recycling, concrete finish work, and underground utilities — to Caltrans and California public agencies, a Pavement Recycling Group (PDR, FDR, soil stabilization), Research & Technical Services for QA/QC, and a Transportation/Logistics arm with an owned trucking fleet plus rail freight capabilities.
Revenue is generated through quote-based B2B sales to construction contractors, government agencies (notably Caltrans and the Transportation Agency for Monterey County), and via Graniterock Supply retail transactions to homeowners and small contractors. Joint-venture partnerships (e.g., DeSilva Gates on the SFO Airport Project of the Year, $25M–$250M tier) extend project scale. The company remains privately held by the founding Wilson family, with no disclosed parent company, private equity backing, or public listing. Control passed from founder A.R. Wilson (1900) through Anna Wilson, then Bruce Gideon and Betsy Woolpert, to Bruce W. Woolpert (deceased 2012), with Tom Squeri and John Orcutt now co-chairmen and Peter Lemon (intern-to-CEO since 1998) serving as President and CEO since January 2023.
Graniterock firmographics
Firmographics- Name
- Graniterock
- Legal name
- Granite Rock Company
- Website
- https://graniterock.com
- Company type
- Private
- Founded year
- 1900
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- Graniterock is a family-owned, Watsonville-headquartered construction materials producer and heavy civil contractor operating 18 quarries, plants, retail, and office locations across Northern and Monterey Bay California since 1900, serving Caltrans, public agencies, contractors, and homeowners.
- Ownership category
- akta.pro rank
Graniterock industry classification
Industry- Product category
- Construction Materials Manufacturing
- NAICS
- Crushed and Broken Granite Mining and Quarrying (212313), Crushed and Broken Limestone Mining and Quarrying (212312), Cement and Concrete Product Manufacturing (3273), Asphalt Paving Mixture and Block Manufacturing (324121), Poured Concrete Foundation and Structure Contractors (23811), Other Concrete Product Manufacturing (327390)
- SIC
- Mining & Quarrying Of Nonmetallic Minerals (No Fuels) (1400), Asphalt Paving & Roofing Materials (2950), Concrete Products, Except Block & Brick (3272), Retail-Lumber & Other Building Materials Dealers (5211)
- akta.pro primary industry
- Aggregate Processing & Value-Added Products (Washing, Screening, Asphalt/Concrete Aggregates) (IMAKAHAH)
- akta.pro secondary industries
- Crushed Stone Quarrying & Processing (IMAKAHAA), Recycled Aggregates & C&D Materials Processing (RCA, RAP, Glass Aggregate) (IMAKAHAI), Asphalt Aggregates & Specialty Aggregates (Rail Ballast, Riprap, Lightweight) (IMADAAAJ)
Keywords
Where Graniterock is headquartered
LocationHeadquarters
- HQ city
- Watsonville
- HQ country
- United States
- HQ region
- North America
Offices18 records
Markets served
Graniterock business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Construction Materials Sales: Sale of aggregates, sand, concrete, hot mix asphalt, recycled materials, and building supplies through multiple branch locations across California
- Heavy Civil Construction Services: Construction division providing paving, excavating, grading, partial depth recycling, concrete finish work and underground utility services for Caltrans, public agencies and general contractors
- Transportation and Logistics Services: Delivery of construction materials using company fleet including transfer dump trucks, end dumps, pneumatic bulk, and rail services
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Quote-based pricing for construction materials and services |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels10 records
Graniterock product offering
Product offeringCore offering
Graniterock produces and sells construction aggregates, ready-mix concrete, hot mix asphalt, and recycled materials sourced from its own quarries and processing facilities across Northern California. The company also operates a Construction Division providing heavy civil services (paving, excavating, grading, underground utilities) for Caltrans and public agencies, a transportation/logistics fleet, the Pavement Recycling Group, and Graniterock Supply retail stores selling building materials to homeowners and contractors.
Product overview
Graniterock is a California-based construction materials and contracting company offering a unified portfolio of construction aggregates, asphalt products, ready-mix concrete, and building materials through its Graniterock Supply retail division. The core product line centers on aggregates (granite, recycled materials, river rock, sand) sourced from company quarries, transformed into asphalt and concrete products for infrastructure projects. Graniterock Supply operates as a retail sub-brand serving homeowners and contractors with landscape materials, masonry, natural stone, and pavers. The company provides integrated services including transportation/logistics, pavement recycling (Pavement Recycling Group), Research Technical Services for quality assurance, and a Construction Division for heavy civil infrastructure projects. The product ecosystem is completed by environmentally responsible/sustainable products supporting LEED certification.
Differentiator
Problem solved
Functional benefit
Brands
- Graniterock Supply: Building materials division offering landscape supply, masonry, natural stone, pavers, and additional construction products through retail branches.
- GraniteXpress
- Capitol Recycling Services
- Pavement Recycling Group (PRG)
Products and services
- Aggregates Construction coarse and fine aggregates including granite, recycled materials, river rock, and sand sourced from multiple Bay Area and Monterey Bay quarry and plant locations for use by construction contractors and infrastructure projects.
- Asphalt and Emulsions Hot mix asphalt products and road materials including Granitepatch patching material, road oils, paving fabric, sealcoat products, and spreader truck delivery services for paving and road construction applications.
- Ready-Mix Concrete Ready-mix concrete delivered to job sites with over 1,000 mix designs developed by Research and Technical Services, including specialty products such as colored concrete, stamped concrete, pervious concrete, and concrete supplies including tools, forming, and reinforcing materials.
- River Rock and Sand Products Natural rounded stones including round rock and pea gravel products, plus a wide range of sand products such as plaster sand, bank fill sand, bunker sand, concrete sand, root zone sand, topdressing sand, and specialty sands for golf courses and construction applications.
- Recycled Construction Products 100% premium recycled products including recycled baserock, drain rock, and sand made from used concrete and asphalt rubble crushed locally at various Graniterock locations for sustainable construction.
- Environmentally Responsible Products Green and sustainable products including pervious concrete, high-fly ash content concrete, interlocking pavers, recycled baserock, erosion control products, and materials qualifying for LEED credits, including slag concrete, turfstone, and parking bumpers.
- Graniterock Supply (Building Materials Retail) Retail building materials division offering landscape supply, masonry, natural stone, pavers, and additional construction products to homeowners, contractors, architects, and designers through multiple Bay Area and Monterey Bay branch locations.
- Construction Division (Heavy Civil Services) Heavy civil infrastructure construction including highways, bridges, paving, excavating, grading, partial depth recycling, concrete finish work, and underground utility services for Caltrans, public agencies, and general contractors across California.
- Transportation and Logistics Services Professional trucking and logistics services delivering rock, sand, and gravel products across California using a fleet that includes transfer dump trucks, pneumatic bulk trucks, double bottom dump trucks, end dumps, and oil trucks, plus rail services for fuel-efficient freight transportation.
- Pavement Recycling Group (PRG) Sustainable pavement rehabilitation services including asphalt milling, micro-milling, partial depth recycling (PDR), full depth recycling (FDR), and soil stabilization, supported by a Caltrans-certified mobile laboratory and including contractor support, value engineering, and educational workshops for engineering firms and public agencies.
Quantifiable outcome
- 65% of annual electrical usage provided by solar panels at A.R. Wilson Quarry
- +2 more outcomes
Companies that use Graniterock
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles4 records
Graniterock technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Graniterock partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core and minor.
- Asphalt Recycling and Reclaiming Association (ARRA)coreGraniterock is a member of the Asphalt Recycling and Reclaiming Association, using their expertise and resources to offer full range recycling options for pavement maintenance projects.
- Recycling & Stabilizing Association of CaliforniacoreGraniterock is a founding member of the Recycling and Stabilizing Association of California, providing expertise in sustainable pavement rehabilitation through recycling strategies.
- Pavement Preservation and Recycling Alliance (PPRA)minorResource partner providing educational support and industry standards for pavement preservation and recycling practices.
- UC Davis Pavement Research Center (UCPRC)minorAcademic research partnership for pavement evaluation and engineering education and research collaboration.
- CalCIMA (California Construction and Industrial Materials Association)coreCalCIMA is celebrating 50 years of SMARA through Golden Anniversary Reclamation Awards, recognizing companies including Graniterock for exemplary reclamation projects representing 50 years of environmental stewardship.
- DeSilva Gates ConstructioncoreJoint venture partner on San Francisco International Airport project that won Project of the Year for transportation projects $25 million to $250 million.
- GCSA AmericaminorPreferred partner providing sand products for golf courses, including bunker sand and specialized golf course sand products.
Scale indicators8 records
Recent moves9 records
Expansion highlights6 records
Graniterock competitors and assessment
Company assessmentBroad incumbents
- Vulcan Materials Company: Largest US producer of construction aggregates and a major supplier of asphalt mix and ready-mixed concrete. While Graniterock is regionally focused in California, both operate quarry-to-customer aggregate supply models serving heavy civil and commercial construction markets.
- Martin Marietta Materials: National US producer of aggregates (crushed stone, sand and gravel) and downstream materials (ready-mixed concrete, asphalt). Highly comparable business model to Graniterock's vertically integrated aggregates-plus-materials operations, but at much broader geographic scale.
- Heidelberg Materials (formerly Lehigh Hanson): Large US producer of cement, aggregates, ready-mixed concrete, and asphalt with operations across multiple states including California. Competes in adjacent categories but at broader geographic and portfolio scale.
- CEMEX USA: Global building materials supplier with significant US aggregates, ready-mixed concrete, and cement operations including California. Competes with Graniterock in ready-mix concrete and aggregate supply.
Direct peers
- CalPortland Company: Western US producer of cement, ready-mixed concrete, aggregates, and asphalt paving materials with deep California and Nevada footprint. Directly competes with Graniterock in aggregate, concrete, and asphalt supply to California infrastructure and Caltrans-related projects.
- Granite Construction Incorporated: Heavy civil contractor and producer of aggregates and asphalt in California and the western US. Historically linked to the Wilson family (Granite Construction was spun off from Graniterock in 1936) and a direct peer on Caltrans heavy civil projects, including JV opportunities.
- Teichert Materials: Northern California family-owned producer of aggregates, ready-mixed concrete, asphalt, and heavy civil contractor. Highly comparable vertically integrated materials-and-construction regional model operating in overlapping California markets.
- Syar Industries: Northern California aggregate and asphalt producer and heavy civil contractor based in Sonoma County. Competes with Graniterock for Bay Area aggregate supply and Caltrans-related infrastructure work.
- DeSilva Gates Construction: Bay Area heavy civil contractor and aggregate producer that has partnered with Graniterock on major projects including SFO. Directly comparable on California paving, grading, and infrastructure contracting.
Regional players
- Holliday Rock Co. Southern California-based producer of aggregates, ready-mixed concrete, asphalt, and building materials. Comparable product portfolio but serves the SoCal market rather than Graniterock's Bay Area/Monterey footprint.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights6 records
Customer concentration
Graniterock social profiles
Digital presenceGraniterock financial estimates
Financial estimateRevenue estimate
Valuation estimate
Graniterock leadership team
Management profileNumber of profiles
Profiles9 records
Graniterock funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Graniterock M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Graniterock
What does Graniterock do?
Graniterock produces and sells construction aggregates, ready-mix concrete, hot mix asphalt, and recycled materials sourced from its own quarries and processing facilities across Northern California. The company also operates a Construction Division providing heavy civil services (paving, excavating, grading, underground utilities) for Caltrans and public agencies, a transportation/logistics fleet, the Pavement Recycling Group, and Graniterock Supply retail stores selling building materials to homeowners and contractors.
Is Graniterock a public or private company?
Graniterock is a private company. It is classified as family owned and is currently operating.
When was Graniterock founded?
Graniterock was founded in 1900. It employs 501 to 1,000 people.
Where is Graniterock based?
Graniterock is headquartered in Watsonville, United States, in the North America region.
How does Graniterock make money?
Three revenue lines are on record. Construction Materials Sales are the primary driver. The others are heavy Civil Construction Services and transportation and Logistics Services.
Who are Graniterock's main competitors?
Broad incumbents on record are Vulcan Materials Company, Martin Marietta Materials, Heidelberg Materials (formerly Lehigh Hanson) and CEMEX USA. Direct peers are CalPortland Company, Granite Construction Incorporated, Teichert Materials, Syar Industries and DeSilva Gates Construction. Holliday Rock Co. is listed as a regional player.
Does Graniterock have an API?
No public API is recorded for Graniterock.
What industry is Graniterock in?
Graniterock's product category is Construction Materials Manufacturing. Its primary akta.pro industry code is IMAKAHAH, Aggregate Processing & Value-Added Products (Washing, Screening, Asphalt/Concrete Aggregates), with a secondary code of IMAKAHAA, Crushed Stone Quarrying & Processing. Its NAICS code is 212313 and its SIC code is 1400.