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22 Years
experience
Emergency
services
Veteran-Owned Construction Services in Southern California
4Granite Inc (4G) was established in 2004 as a Service Disabled Veteran Business Enterprise specializing in general engineering construction. Our expertise spans earthwork, demolition, road repair, fence installations, building renovations, HDPE welding, and environmental remediation. Certified as a Small Business (SB-Micro) and Disabled Veteran Business Enterprise (DVBE), we serve federal, state, and private clients across the Western United States.

Our team holds extensive certifications in safety protocols including OSHA, MSHA, and HAZWOPER. With a focus on quality workmanship and client satisfaction, we deliver projects ranging from flood control facilities to emergency repairs while maintaining a strong safety culture. Our leadership team brings decades of experience in construction management, hazardous waste remediation, and engineering support services.
Services
Earthwork and Grading Underground Utilities Road Repair and Maintenance HDPE Welding Flood Control Facilities Building Renovation Environmental Remediation Emergency Repairs Fence Installations Tenant Improvements
Details
  • Year established: 2004
Highlights and features
  • We are a certified Service Disabled Veteran-Owned Small Business (SDVOSB)
  • Our team holds OSHA, MSHA, and HAZWOPER safety certifications
  • We have 20+ years of experience in civil construction and environmental remediation
  • We serve federal, state, and private clients across the Western United States
  • We maintain a proven safety culture with low incident rates on complex projects
Associations and certifications
  • Small Business Administration (SBA)
  • Department of General Services (DGS)
  • California Public Utilities Commission (CPUC)
What people say
Great workmanship Professional crews Timely completion Safety focus Expert problem-solving
Services
Earthwork and Grading
Our earthwork and grading services prepare land for construction projects through slope cutting, subgrade preparation, excavation, and stabilization. We implement proper drainage systems to prevent erosion and structural damage while ensuring compliance with environmental regulations. Our team handles projects ranging from small site preparations to large-scale levee construction.
HDPE Welding
We provide certified HDPE welding and pipeline installation services for water, sewer, and industrial applications. Our qualified welders perform pipe assembly, pressure fitting, and thermal joining while maintaining strict quality control standards. We handle projects requiring large diameter pipes and complex system designs for both temporary and permanent infrastructure needs.
Flood Control Facilities
Our flood control services include drainage management planning, storm sewer installation, erosion control programs, and floodplain analysis. We construct water collection facilities and implement watershed management solutions that comply with state and federal regulations. Our team specializes in both urban drainage systems and natural stream restoration projects.
Building Renovation
We offer complete building renovation and tenant improvement services for commercial, government, and residential properties. Our services include structural modifications, system upgrades, and interior remodeling while maintaining operational continuity for businesses. We manage projects from initial assessment through final construction with dedicated project managers.
Environmental Remediation
Our environmental remediation services address contaminated sites through toxin removal, soil cleaning, and hazardous material disposal. We handle permitting processes and regulatory compliance for projects involving heavy metals, chemicals, and industrial waste. Our OSHA-certified teams use specialized equipment to safely remediate sites while preventing further environmental contamination.
People
Joe Webb
President and CEO
U.S. Marine Corps veteran with 20+ years in construction management and environmental remediation. Holds California Class A/B HAZ contractor license #898549. Certified in OSHA safety standards, forklift operation, and heavy equipment. Specializes in federal project management and hazardous waste remediation.
Questions
What construction services does 4Granite Inc offer?
We provide earthwork, grading, HDPE welding, flood control, road repair, building renovation, environmental remediation, and emergency repair services for commercial, government, and private clients.
Is 4Granite Inc certified as a veteran-owned business?
Yes, we are certified as a Service Disabled Veteran-Owned Small Business (SDVOSB) through the Small Business Administration and hold DVBE certifications from California agencies.
What geographic areas do you serve?
We operate throughout the Western United States, with primary service areas in Southern California and the High Desert region.
Do you handle emergency construction projects?
Yes, we provide emergency repair services for construction issues with rapid response times to address urgent infrastructure needs.
What safety certifications does your team hold?
Our team maintains OSHA 10/30, MSHA 24-hour, and HAZWOPER certifications, along with specialized training in forklift and heavy equipment operation.
What types of clients do you work with?
We serve federal agencies (Navy, National Park Service), state departments (Veterans Affairs), utility companies, and private sector clients across mining and energy sectors.
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Reviews (1)
Matthew Hirsch
May 13, 2021 Report
Positive:Professionalism,Responsiveness,Value
I worked with 4Granite for several years on a variety of projects ranging from simple grading jobs to complex dewatering systems. 4Granite, and specifically their owner Joe, were always professional, cost competitive, and safe. Finding business and project solutions fit for purpose.