US · FMCSA ACTIVE
SHAMROCK MATERIALS INC
dba SHAMROCK MATERIALS OF COTATI
Petaluma, CA 949758044 · DOT 2644567
Company profile
Web-discovered · as of 2026-07-30
Shamrock Materials Inc (dba Shamrock Materials of Cotati) is a Northern California supplier of ready-mixed concrete and building materials, operating specialized dump and concrete delivery trucks in the Greater Bay Area as part of Vulcan Materials Company.
Fleet use
Specialized service
Operating scope
Local
Service model
dedicated
Equipment
dump, specialized
Ownership
Subsidiary
part of Vulcan Materials Company
Employees
51-200
HQ · 400 Hopper St, Petaluma, CA 94952
Active website, recent (2026) Yelp/career activity at 400 Hopper St, Petaluma, CA.
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
65
power units
Activity
road freight carrier
for hire licence
In operation since
2015
28 drivers
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