Anthony A.
8/5/2025
Good quality rock, but the website does need to be updated asap. What you see is not what you get in that regard. You will absolutely need to come in person to check out what they have, otherwise...
Tri-State Materials
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(46)
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31885 Winchester Rd
Winchester, CA 92596
Tri-State Materials, nestled near Diamond Valley Lake in Winchester, California, boasts a diverse range of construction materials. From decomposed granites and cobbles to boulders, flagstones, and unique specimens, the selection caters to varied project requirements.
Customers can explore the array of products on the website, including detailed information on each material type. Additionally, the FAQ section addresses common queries, offering valuable insights for informed decision-making.
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Reviews
3.546 reviews
Miss B.
5/16/2025
Great customer service and reasonable pricing ! Their rocks are high quality and delivery is seamless
Valerie A.
11/17/2024
I love this place!! They have a great selection of landscaping rock! Their prices are really good. Their employees are wonderful! They even have an excellent selection of boulders! BTW of you...
Ramandeep S.
7/3/2024
The lady at the front desk entered incorrect size of rocks, we asked to order 3/4 to 1.5 inch and she placed the order for 1.5 to 3 inches. When inquired at delivery time, she stated there's no...
Diana E.
11/25/2024
Purchased rock from here on several occasions. Always satisfied with the material and their Loader, Brian, always gives special attention to any request I may have. Today, he got off his loader...
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