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CalMat Co. dba Shamrock Materials ready-mix concrete plant in San Rafael, CA

San Rafael RMC Plant 073 · serving San Rafael, CA 94901-3964 (Marin County)
NRMCA-certified

CalMat Co. dba Shamrock Materials (San Rafael RMC Plant 073) is an NRMCA-certified ready-mix concrete plant serving San Rafael, CAand nearby ZIP areas. Describe your pour below (concrete strength, approximate size, pour date, and notes like slump or site access) and we'll show you the certified plants serving your ZIP to call directly.

Certification
NRMCA cert #33702
Listed as certified when last checked 2026-07-03 · expires 2027-04-19
Contact
(800) 675-1511
Location is ZIP-area approximate; confirm exact address with the plant.

Available strengths (PSI), slump, and admixtures aren't verified here. Confirm your spec with the plant when you call. Estimates only.

See NRMCA-certified ready-mix plants near San Rafael, CA to call directly

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Source: NRMCA Currently Certified Plants directory. Ready Mix Concrete is an independent directory of NRMCA-certified ready-mix concrete plants and is not affiliated with CalMat Co. dba Shamrock Materials.