Plumbing Contractor Permit Requirements in Los Angeles, CA

Complete permit and license guide for starting a plumbing contractor in Los Angeles, Los Angeles 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: .

Los Angeles / Los Angeles County Requirements

2 requirements
1

City of Los Angeles Business Tax Registration Certificate

All businesses operating in Los Angeles must register with the Office of Finance and obtain a Business Tax Registration Certificate (BTRC). Plumbing contractors are taxed based on gross receipts. Register online at finance.lacity.org.

$34 registration fee + annual gross receipts tax (varies)1–5 days
Official government source
2

Los Angeles Department of Building and Safety — Contractor Registration

Plumbing contractors pulling permits in the City of Los Angeles must be registered with the LA Department of Building and Safety (LADBS). The contractor's state C-36 license must be on file. Registration is required before permits are issued.

$165/year1–2 weeks
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. The bond is required for initial licensure and must be kept current for license renewal.

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

California Workers' Compensation Insurance

Required for all contractors with employees in California. Even sole owners are required to 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

Official Sources

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