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Third-party agencies (PDF) are certified by HCD to perform as a Design Approval Agency (DAA) and/or a Quality Assurance Agency (QAA), enforcing design and construction approval of factory-built housing designated for sale in California. 

Third-party agencies, once approved, provide these services as businesses acting on behalf of HCD.

Third-Party Agency Certification Approval

In order to qualify as a third-party agency, you must complete the Design Approval Agency and/or Quality Assurance Agency Certification Application - HCD FBH 307 (PDF) required of all new or renewal applications and submit all required documents listed on the form including:

When acting on behalf of HCD as a third-party agency, you must execute a Notice of Third-Party Contract or Contract Termination (PDF) at the time of the inspection services and upon termination of the contract and send a copy to HCD no later than ten days after the effective date of the contract or termination of the contract.

Quality Assurance Inspector (QAI)

The following are required to apply for the examination to inspect factory-built homes.

Submit Your Application

Submit your application, including all forms, documents, and fees to:

HCD-Factory-Built Housing Program 
P.O. Box 278180
Sacramento, CA 95827

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