International Industrial Contracting Corporation
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About the D21 — D21 License
A D21 (D21) licensed contractor in California is authorized to perform specialized work in their trade area. California's Contractors State License Board (CSLB) requires contractors in this classification to meet education, experience, and examination requirements before receiving their license. When hiring a D21 contractor, always verify their license is active and in CLEAR status, confirm they carry adequate insurance, and get a detailed written contract before work begins. Licensed contractors must maintain a $25,000 contractor bond and comply with all applicable building codes and regulations.
💡 Tips for Hiring a D21 Contractor
- Always verify the contractor license is active on the CSLB website
- Get at least three written estimates before making a decision
- Never pay more than 10% or $1,000 down (whichever is less) per California law
- Get a detailed written contract specifying scope, timeline, and payment terms
- Verify the contractor carries general liability and workers compensation insurance
✅ Verify This License
Always verify contractor licensing directly with the Contractors State License Board (CSLB) before hiring. You can look up license #456140 to confirm it is active and check for any complaints or disciplinary actions.
Check on CSLB.ca.gov →🏢 Are you International Industrial Contracting Corporation?
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Claim This Page →Frequently Asked Questions
Do I need a licensed D21 contractor in California?
Yes. California law requires a licensed contractor for any d21 work valued at $500 or more. Licensed contractors must pass exams, maintain bonding, and carry insurance. Hiring unlicensed contractors puts you at risk.
What does a D21 license cover?
A D21 (D21) license authorizes the contractor to perform specialized d21 work in California. The specific scope is defined by the CSLB. Verify the license covers the work you need before hiring.