4d Milling INC, A General Engineering Contractor in Oak Glen, CA
4d Milling INC operating as a corporation holds an active California contractor license (CSLB #1138350), valid through Jun 30, 2027. First issued in 2025, the license has been on the CSLB roster for 1 year. It carries a single CSLB classification: A — General Engineering Contractor. Records show an active surety bond on file with Western Surety Company and active workers' compensation coverage from National Casualty Company. The business is based in Oak Glen, in San Bernardino County, California.
- License Number
- 1138350
- Issued
- Jun 3, 2025
- Status
- CLEAR
- Expires
- Jun 30, 2027
- Entity
- Corporation
- Surety
- Western Surety Company
- Bond Number
- 67492315
- Effective
- May 15, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- National Casualty Company
- Policy Number
- WWC340146A
- Effective
- Feb 21, 2026
- Expires
- Feb 21, 2027
Recently licensed: the CSLB license is active and in good standing, issued within the last 2 years.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is 4d Milling INC licensed in California?
Yes. 4d Milling INC holds California Contractors State License Board license number 1138350, which is active and in good standing. The license was first issued on June 3, 2025. It is valid through June 30, 2027.
What does 4d Milling INC specialize in?
4d Milling INC is licensed for one CSLB classification: A General Engineering Contractor.
Where is 4d Milling INC headquartered?
4d Milling INC is headquartered at 39800 Pine Bench Road, Oak Glen, CA 92399, in San Bernardino County, California.
Does 4d Milling INC have an active surety bond on file with CSLB?
Yes. 4d Milling INC has an active California contractor surety bond filed with Western Surety Company.
Does 4d Milling INC carry workers' compensation coverage?
Yes. 4d Milling INC carries active workers' compensation coverage through National Casualty Company.
How do I verify 4d Milling INC's contractor license?
You can verify 4d Milling INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1138350.
- Bond activeMay 15, 2025
- License issuedJun 3, 2025
- WC coverage startsFeb 21, 2026
- WC expiresFeb 21, 2027
- License expiresJun 30, 2027
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