Business Details
21 Years
experience
Your Trusted Source for Building Materials in Winchester, CA
Tri-State Materials has been serving the construction and landscaping industries since 2005, providing high-quality natural stone materials and delivery services to residential and commercial clients across Southern California. Our expertise lies in sourcing and distributing decomposed granites, cobbles, boulders, flagstones, and specialty aggregates from our strategically located yards near Diamond Valley Lake. With two operational facilities in Winchester and Coachella, we maintain a diverse inventory of over 50 material types while offering specialized delivery solutions through our fleet of heavy-duty trucks and equipment. Our team of experienced professionals ensures accurate product selection, timely delivery, and technical support for both small-scale landscaping projects and large infrastructure developments.We maintain strict quality control standards across our product lines while continuously expanding our inventory to meet evolving industry demands. Our commitment to customer satisfaction is demonstrated through our flexible delivery options, including specialized handling for oversized materials. Through consistent service excellence and material quality, we have established ourselves as a trusted supplier in the regional construction materials market.
Services
Boulders
Cobble/River Rock
Crushed Aggregate
DG
Exotics
Soils/Mulch
Flagstone
Travertine
Pavers
Sealers
Details
- Year established: 2005
Highlights and features
- We operate two strategically located distribution centers near Diamond Valley Lake
- Our fleet handles loads from 10 cubic yards to 26-ton industrial shipments
- We maintain inventory of over 50 natural stone material types
- Our team provides technical support for material selection and application
- We offer specialized handling for oversized construction materials
Services
Boulders Supply
We provide natural and quarried boulders in various sizes for landscaping, erosion control, and construction projects. Our inventory includes granite, limestone, and basalt formations weighing up to 10 tons. Specialized delivery equipment ensures safe transport and placement of oversized specimens.
Crushed Aggregate
Our crushed aggregate products include base materials for road construction, drainage solutions, and decorative applications. Available in multiple gradations from 3/4" minus to 1 1/2" rock, meeting Caltrans and local municipality specifications for infrastructure projects.
Flagstone Supply
We offer premium flagstone selections for patios, walkways, and architectural features. Our inventory includes sandstone, limestone, and slate in various thicknesses and natural cleft surfaces. Custom cutting services available for specific dimensional requirements.
Truck Delivery
Our delivery fleet includes 26-ton capacity trucks for bulk materials, low-bed trailers for oversized boulders, and flatbeds with forklifts for palletized products. Specialized equipment handles challenging terrain and tight access locations for residential and commercial deliveries.
Soils & Mulch
We supply topsoil blends, compost, and decorative mulches for agricultural, residential, and commercial landscaping. Our soil products meet local erosion control requirements and include custom-blended options for specific horticultural applications and drainage needs.
Questions
What types of natural stone materials do you carry?
We stock decomposed granites, cobbles, boulders, flagstones, travertine, and specialty exotics. Our inventory includes both decorative and structural materials in various sizes and compositions.
Do you offer delivery services for bulk materials?
Yes, we provide delivery through our fleet of trucks with capacities from 10 to 26 tons. Specialized equipment handles oversized materials and challenging delivery locations.
What are your business hours?
Winchester yard operates Monday-Friday 7:00 AM - 3:30 PM and Saturday 7:00 AM - 2:00 PM. Coachella yard is open Monday-Friday 6:30 AM - 3:00 PM.
Can you handle large commercial orders?
Yes, our inventory and delivery capabilities support both residential and commercial projects. We maintain bulk stock of construction aggregates and provide volume pricing for large-scale developments.
Do you sell bagged products?
Yes, we offer bagged materials including sealers, specialty soils, and decorative aggregates. Bagged products are available for both retail and wholesale purchases at our distribution centers.
