California is the only state that registers janitorial contractors, and skipping it costs $25,000 a violation

California imposes the most complex compliance framework of any U.S. state for commercial cleaning and janitorial businesses. Between the Janitorial Contractor Registration Act (California Labor Code §§ 1420–1432), AB 5's ABC test, Cal/OSHA's independent standards, and Proposition 65's chemical-notification regime, a Building Service Contractor entering California faces eight to twelve distinct registration or compliance obligations before the first mop touches a commercial floor. This guide details each requirement with the specific statute, agency, and dollar threshold that triggers it.

Janitorial Contractor Registration: Labor Code §§ 1420–1432

The California Janitorial Contractor Registration Act requires any employer that contracts to provide janitorial services using employees to register annually with the California Labor Commissioner's Office (DLSE). This is not a license to perform cleaning — it is a labor-compliance mechanism designed to ensure wage-and-hour, workers' compensation, and payroll-tax obligations are met. Registration must be renewed each year. Unregistered janitorial contractors face civil penalties of up to $25,000 per violation. Importantly, the Act applies when the business uses employees (not independent contractors) to clean commercial buildings, offices, or multi-unit residential structures. Post-AB 5, most California cleaning companies cannot classify frontline cleaners as independent contractors, which means nearly all commercial cleaning companies with any workers cleaning California premises must register.

Registration is filed with the DLSE, 1515 Clay Street, Suite 801, Oakland, CA 94612, telephone (510) 622-3273. The annual registration fee is $500 for companies with 1–49 employees and $1,000 for companies with 50 or more employees. Proof of workers' compensation coverage is required at registration.

AB 5 and the ABC test: independent contractor classification

Assembly Bill 5 (2019), codified at California Labor Code §§ 2775–2785, applies the strict ABC test to the classification of workers. Under this test, a worker is an employee — not an independent contractor — unless the hiring entity can satisfy all three prongs: (A) the worker is free from the control and direction of the hiring entity in connection with the work; (B) the worker performs work outside the usual course of the hiring entity's business; and (C) the worker is customarily engaged in an independently established trade or business of the same nature.

For commercial cleaning companies, Prong B is almost never satisfiable. Cleaning workers perform the core service of a janitorial company; their work is by definition within the usual course of the hiring entity's business. The California Labor Commissioner has repeatedly found cleaning worker misclassification. Penalties include back wages, unpaid payroll taxes, and civil penalties of $5,000–$25,000 per violation. The Business-to-Business exemption (12 strict criteria) may apply when a separate cleaning company (not an individual) subcontracts work, but only if all criteria are satisfied, including that the subcontractor has its own business license and provides services to the public generally.

CSLB licensing for construction-adjacent cleaning

The California Contractors State License Board (CSLB) requires licensure for any cleaning work that constitutes a "construction project" valued above $500 in combined labor and materials (Business and Professions Code § 7028). Standard commercial janitorial service does not require a CSLB license. However, the following cleaning-adjacent services do: asbestos abatement and lead-based paint removal (requires a separate asbestos certification from DOSH); water and fire damage restoration; post-construction cleanup involving debris removal; and biohazard remediation. The relevant CSLB license classifications include C-61/D-63 (Construction Site Cleanup) for post-construction cleaning, requiring at least four years of journeyman-level experience and passage of the CSLB law and business examination. The initial CSLB license fee is $330 application + $200 initial license fee. Every licensed contractor must also maintain a $15,000 contractor's bond filed with the CSLB (BPC § 7071.6).

Proposition 65 and chemical disclosure obligations

California's Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65), administered by the Office of Environmental Health Hazard Assessment (OEHHA), requires businesses with 10 or more employees to provide a "clear and reasonable" warning before knowingly exposing any individual to a listed chemical. As of 2024, the Prop 65 list contains more than 900 chemicals. Cleaning products commonly used in commercial cleaning operations that contain listed chemicals include: glutaraldehyde (sterilizing agents — listed as a developmental toxicant), PFAS compounds including PFOA and PFOS (listed carcinogens), formaldehyde (listed in some preservatives and disinfectants), and quaternary ammonium compounds used in some EPA-registered disinfectants. BSCs must review the SDS for every product in their cleaning program and determine whether warning obligations arise. Failure to comply exposes the business to citizen-suit enforcement with statutory civil penalties of up to $2,500 per day per violation.

Cal/OSHA compliance for janitorial operations

California operates its own OSHA-approved State Plan through the Division of Occupational Safety and Health (Cal/OSHA). Cal/OSHA standards are often more stringent than federal OSHA. For commercial cleaning, critical standards include: CCR Title 8, Section 5194 (Hazard Communication — requires SDS maintenance and employee chemical training); CCR Title 8, Section 5193 (Bloodborne Pathogens — mandatory for cleaning crews in healthcare, schools, or any facility with potential blood-contact hazards); CCR Title 8, Section 3380 (Personal Protective Equipment — employer must conduct a hazard assessment and provide appropriate PPE at no cost to employees); and CCR Title 8, Section 3362 (Ergonomics — applicable to repetitive-motion injuries common in janitorial work). The Cal/OSHA Heat Illness Prevention Standard (CCR Title 8, Section 3395) applies to outdoor cleaning work. Employers must establish and maintain an Injury and Illness Prevention Program (IIPP) under CCR Title 8, Section 3203 — a written, site-specific document.

Workers' compensation: California's competitive market

California is a competitive (non-monopolistic) workers' compensation state. Commercial cleaning companies use NCCI-equivalent class code 9014 (in California, administered by the Workers' Compensation Insurance Rating Bureau of California — WCIRB — using code 9014 for janitorial services). Coverage is mandatory for any employee (including part-time workers) under California Labor Code § 3700. The State Compensation Insurance Fund (SCIF), a self-supporting state agency, competes with private carriers and is the insurer of last resort. Premium rates vary by carrier and experience modification factor, but the base rate for code 9014 in California has historically been among the highest in the nation due to the state's benefit levels and litigation environment. Employers who fail to maintain workers' compensation insurance face stop-work orders, criminal prosecution (a misdemeanor for first offense, felony for subsequent offenses), and personal liability for injured workers' costs.

Employment Development Department registration and payroll taxes

All California employers must register with the Employment Development Department (EDD) within 15 days of paying wages exceeding $100 in a calendar quarter. California's State Disability Insurance (SDI) program is funded by employee payroll deductions; as of 2024, the SDI contribution rate was 0.9% of all wages up to the $153,164 wage base. California Paid Family Leave (PFL) is part of the SDI program. Employers are responsible for withholding, reporting, and remitting payroll taxes electronically via e-Services for Business on the EDD website. The California minimum wage as of January 1, 2024 is $16.00/hour statewide, with higher rates in some municipalities (e.g., Los Angeles: $17.28/hour). Cleaning companies must track hours by location when operating across multiple municipalities.

Local business licensing: Los Angeles, San Francisco, San Diego

California has no statewide business license. Each city and county issues its own. Los Angeles requires a Business Tax Registration Certificate from the Office of Finance, with cleaning companies paying the business tax on gross receipts above a minimum threshold (currently, the gross receipts tax rate for service businesses in LA is $1.01 per $1,000 of receipts above $100,000). San Francisco requires registration with the Office of the Treasurer and Tax Collector; the city's gross receipts tax for janitorial services in tax class 8 applies at tiered rates beginning at 0.567% for receipts between $1,090,000 and $2,500,000. San Diego requires a Business Tax Certificate through the City Treasurer, renewed annually. Cleaning companies operating in multiple California cities must research each jurisdiction's requirements individually, as fees and structures vary significantly.

Sales tax on janitorial services

California does not impose sales tax on janitorial service labor. Under California Revenue and Taxation Code § 6006, a "sale" for sales tax purposes involves the transfer of title to tangible personal property. Service contracts — including cleaning service agreements — are generally not taxable. However, cleaning companies that separately sell tangible personal property to clients (cleaning supplies sold outright, paper products, equipment) must collect and remit California sales and use tax on those sales. The statewide base rate is 7.25%, with local district taxes adding 0.125% to 3.5% depending on location. The California Department of Tax and Fee Administration (CDTFA) administers sales tax registration, which is required before making any taxable sale.

Earned sick leave, Healthy Workplaces Act, and wage-hour compliance

California's Healthy Workplaces, Healthy Families Act (California Labor Code §§ 245–249) requires employers to provide at least 5 days (40 hours) of paid sick leave per year to employees who work 30 or more days in a year (the threshold was increased from 3 to 5 days effective January 1, 2024 under SB 616). This significantly affects cleaning companies with large part-time workforces. Additionally, California Labor Code § 226 requires wage statements to include all hours worked, applicable hourly rates, and other itemized information; violations carry penalties of $50 for the initial violation and $100 per employee per subsequent violation, capped at $4,000. The Wage Theft Prevention Act (Labor Code § 2810.5) requires employers to provide written notice at the time of hire and upon any change of specified pay information, including pay rate, pay day, and employer's legal name and address.

Local / metro cleaning business licenses

City and metro rules sit on top of California statewide requirements. Use the state sections above for entity, workers’ compensation, and tax — then open the metro page for municipal fees and agencies.

Primary sources

Page last reviewed: June 2, 2026. Primary sources: CA Secretary of State; CA CSLB; CA CDTFA; CA DIR; SBA.gov. Spot an error? Contact us.