Plumbing Contractor Permit Requirements in San Diego, CA

Complete permit and license guide for starting a plumbing contractor in San Diego, San Diego County, California.

$1200 -- $3500 3–6 months (dominated by CSLB exam scheduling) 6 requirements

Not legal advice. Requirements may change — always verify with your local government authority before applying. Last verified: .

San Diego / San Diego County Requirements

2 requirements
1

City of San Diego Business Tax Certificate

All businesses operating in San Diego must obtain a Business Tax Certificate from the City of San Diego Development Services Department. Plumbing contractors must list their California C-36 license number. Renew annually.

$75–$150/year (based on business size)1–5 days (online application)
Official government source
2

San Diego Development Services — Contractor Registration

Contractors pulling permits in San Diego must register with the City of San Diego Development Services Department. The state C-36 license must be verified on file. No separate city plumbing contractor license is required beyond state license verification.

No additional fee (covered under Business Tax Certificate)1–3 days
Official government source

California State Requirements

3 requirements
1

California C-36 Plumbing Contractor License

Required to contract for plumbing work in California. Issued by the California Contractors State License Board (CSLB). Applicants must pass a trade exam and law/business exam, have at least 4 years of journey-level experience, and provide proof of a $25,000 contractor's bond and workers' compensation insurance.

$450 application fee + $200 exam fee3–6 months (application review, exam scheduling)
Official government source
2

California Contractor's Bond ($25,000)

All licensed contractors in California must maintain a $25,000 surety bond filed with the CSLB. Required for initial licensure and renewal.

$100–$300/year (bond premium)1–3 days
Official government source
3

California Workers' Compensation Insurance

Required for all contractors with employees. Sole owners must carry workers' comp or file a certification of exemption with the CSLB.

Varies by payroll and classification1–5 days to obtain policy
Official government source

Federal Requirements

1 requirement
1

EIN (Employer Identification Number)

Required if you have employees or operate as an LLC/corporation. Free from the IRS.

FreeImmediate (online application)
Official government source

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