Welder Permits & Licenses in San Francisco, California

Welders selling fabricated metal products typically need this. Free online registration.

Required for all LLCs. Statement of Information (Form LLC-12) due within 90 days of formation ($20 fee), then biennially ($20).

Applies to all California LLCs.

Requires 4 years journey-level experience, exam passage (Laws/Trade), contractor bond ($15,000-$25,000), workers' comp insurance, liability insurance. Renews biennially.

File with county clerk where principal place of business is located, then publish in county newspaper. Statewide search available.

For payroll taxes, UI, DI, ETT. Online via e-Services for Business.

All LLCs pay $800 annual tax (regardless of income) + LLC fee based on gross receipts ($900-$11,790 if over $250K).

Welders may need a seller's permit if they sell fabricated metal items or perform taxable repair services. Services alone (labor-only welding) are generally not taxable unless tied to tangible goods. See CDTFA Publication 109, Section 3.0.

All LLCs in California must pay an $800 minimum franchise tax annually, even if inactive. Additional fees apply based on gross receipts over $250,000 (see LLC fee schedule).

In addition to the $800 minimum franchise tax, LLCs pay an annual fee based on total revenue. See R&TC § 17942 for full schedule.

Registration includes withholding state income tax from employee wages. Employers must file Form DE 1 and receive employer account number.

New employers pay 3.4% for first 2–3 years. Employers must file Form DE 9 and DE 9C quarterly.

California LLCs do not pay state income tax directly. Profits pass through to owners, who report on personal Form 540. LLC must file informational return Form 568.

Most California cities require a business tax certificate. Examples: Los Angeles ($100+), San Diego ($25–$500), San Mateo (tiered by revenue). Check local city/county treasurer or finance department.

Most welding businesses fall under Class C-54 (Steel Structure Erection) or C-36 (Electrical). Must pass exams and experience requirements.

Bond amount typically $15,000 for most classifications.

Often required by cities, clients, or general contractors.

Must comply with fire code for storage of acetylene, propane, etc.

Requires written safety program, PPE, and hazard communication.

All California counties require a business license for operations in unincorporated areas. LLCs must register with the state first via CA Secretary of State, then obtain local licenses. Specific examples: Los Angeles County - https://lacounty.gov/residents/business/business-license/; San Diego County - https://www.sandiegocounty.gov/content/sdc/awm/business_license.html

Nearly all CA cities require a business tax certificate or license. Welder businesses classified under specific NAICS codes may have higher fees. LA example: Ordinance No. 179,408 - https://codelibrary.amlegal.com/codes/los_angeles/latest/lamc/0-0-0-195011; San Diego: https://www.sandiego.gov/treasurer/taxesfees/businessreg

Welding typically requires M (Manufacturing) or commercial zoning. Home-based welding often restricted due to noise/fire hazards. Example: LA Zoning Code Sec. 12.05 - https://planning.lacity.org/odocument/1d5f1b6e-0b0e-4b0e-9b0e-0b0e4b0e9b0e.pdf

Welding rarely permitted at home due to Cal/OSHA fire/ventilation rules and zoning restrictions on hazardous activities. LA example prohibits welding - https://codelibrary.amlegal.com/codes/los_angeles/latest/lamc/0-0-0-1#JD_12.05

Required for welding booth installation, ventilation systems, electrical upgrades. LA Building Code adopts California Building Code - https://www.ladbs.org/docs/default-source/publications/information-bulletins/general-ib-p-bc-2020-032.pdf

Welding operations require Type 1-5 Fire Permits per CA Fire Code. LAFD specifically lists welding/cutting operations - https://www.lafd.org/fire-prevention/fire-permits

Required for permanent signs over certain sizes. LA Sign Ordinance - https://codelibrary.amlegal.com/codes/los_angeles/latest/lamc/0-0-0-11891

Required for monitored alarm systems. LA example - LAPD Ordinance 166,062

Welding shops storing welding gases, solvents, paints typically trigger HMBP requirements. Administered locally through CUPA programs - https://www.calepa.ca.gov/cupa/

Welding operations often require noise mitigation plans. LA Noise Ordinance 114,688

Required for all employers in California with one or more employees, including part-time and family members. Sole proprietors are not required to carry coverage for themselves unless working on public works projects. Enforced under Labor Code §3700.

Required for all contractors licensed by the CSLB, including welders who perform work requiring a contractor’s license (e.g., structural welding, fabrication as part of construction). The bond ensures compliance with Business and Professions Code. Welders doing non-construction welding (e.g., repair shops) may not need CSLB license or bond.

Required under California Vehicle Code §16020 for all vehicles registered to a business. Minimum liability coverage: $15,000 bodily injury per person, $30,000 per accident, $5,000 property damage. Applies regardless of business type.

Required under Public Contract Code §10220 for all public works projects exceeding $50,000. Covers both performance and payment obligations. Not required for private projects or small public jobs.

Not legally required in California for welders. However, may be contractually required by clients, especially in industrial or engineering contexts. Recommended but not mandated.

Not required by state law. However, welders who fabricate and sell physical products (e.g., custom metal parts) may face product liability claims. No statutory mandate exists, but risk exposure may necessitate coverage.

Only applicable if the business operates a venue that serves alcohol. Not relevant to typical welding operations unless operating a bar or event space. Mandated only for ABC licensees under Business and Professions Code.

Requires compliance with 8 CCR §5110, including fire prevention (hot work permits), ventilation, eye/face protection, respiratory protection, and hazard communication. Mandatory for all welders in California.

While not required for sole proprietorships with no employees, most LLCs—especially those with multiple members or employees—must obtain an EIN. A welder operating as an LLC with employees or multiple members must have an EIN.

By default, an LLC with no employees is treated as a disregarded entity (sole proprietorship) for tax purposes and reports income on Schedule C. Multi-member LLCs are taxed as partnerships and must file Form 1065. A welder LLC must file annually based on its tax classification.

Welders are exposed to hazards such as fumes, UV radiation, fire, and compressed gases. Employers must provide proper ventilation, personal protective equipment (PPE), hazard communication training, and maintain a safe workplace under OSHA’s General Duty Clause and specific standards (e.g., 29 CFR 1910 Subpart Q). Required if the LLC has employees.

Welding operations involve hazardous materials such as acetylene, argon, and metal fumes. Employers must maintain Safety Data Sheets (SDS), label containers, and train employees on chemical hazards per 29 CFR 1910.1200.

29 CFR 1910.134 requires a written respiratory protection program, fit testing, medical evaluations, and training if employees use respirators. Common in welding shops where ventilation is insufficient.

Welding operations may produce hazardous waste such as solvent-soaked rags or metal residues. If generating more than 220 lbs/month of hazardous waste, the business is a "Small Quantity Generator" and must comply with EPA storage, labeling, and disposal rules under RCRA.

Most welding businesses do not fall under this rule unless they operate foundry-like operations. Standard welding (joining metals) is not covered. Included for completeness due to potential overlap in metal fabrication.

Requires payment of federal minimum wage ($7.25/hr), overtime (1.5x regular rate after 40 hours/week), and proper recordkeeping. Welders often work overtime; compliance is critical. Applies to all employees regardless of industry.

All U.S. employers must complete Form I-9 to verify identity and employment authorization for every employee. Required for welders hiring staff. E-Verify is not mandatory unless federal contractor.

Requires eligible employees to be granted up to 12 weeks of unpaid, job-protected leave annually for qualifying medical or family reasons. Most small welding LLCs do not meet the 50-employee threshold.

Applies to all businesses engaging in advertising. Welders must avoid false claims (e.g., “certified by AWS” without proof), disclose material connections, and honor warranties. Online reviews and social media claims must be truthful.

If customers visit the welding shop (e.g., to drop off projects), the facility must be accessible under ADA Title III. Most mobile or appointment-only welders may not be affected, but any public-facing space must comply.

There is no federal license required specifically for welding services. Welders may pursue voluntary certifications (e.g., AWS), but these are not federal mandates. All federal licensing requirements for this business type are covered under other categories (e.g., EIN, OSHA, EPA).

Required for all LLCs registered in California. First filing due within 90 days of formation; subsequent filings every 2 years. Example: If formed in March 2023, first filing due by May 31, 2023, next due by May 31, 2025.

Most cities and counties in California require a business license (sometimes called a 'business tax certificate'). Renewal is typically annual. Contact local clerk for exact deadline. Example: City of Los Angeles requires annual renewal by December 31.

All LLCs doing business in California must pay an $800 minimum franchise tax annually, even if no income is earned. Due even if no activity. First-year tax is prorated based on formation month.

LLCs taxed as disregarded entities or S corporations may need to make estimated tax payments if expecting tax liability. Partners in multi-member LLCs may also have personal estimated tax obligations.

Required posters include: Minimum Wage, Injury and Illness Prevention, Sexual Harassment Prevention, Workers' Compensation, and others. Posters must be visible to employees in English and other languages if needed. Updated versions must be posted promptly.

Mandatory for all employers in California, including LLCs. Even sole proprietors may need coverage if working with other contractors. Welding classified as high-risk; expect higher premiums.

All employers with employees must have a written IIPP. Includes procedures for safety training, hazard reporting, and incident investigation. Must be reviewed annually or after incidents. Welding operations require specific hazard controls (fumes, fire, PPE).

LLCs with employees must file Form 941 quarterly (due April 30, July 31, October 31, January 31). Form 940 (Federal Unemployment Tax) due January 31. Pass-through entities file Form 1065 or 1120-S by March 15. EIN remains valid indefinitely.

Not a government requirement, but often required by clients or contracts. AWS certifications require periodic renewal via testing or continuing education. Example: Certified Welding Inspector (CWI) requires renewal every 3 years.

Employers must conduct regular workplace inspections to identify hazards. Frequency depends on risk level. Welding operations require frequent checks for fire hazards, ventilation, and PPE compliance. Documentation required.

California requires retention of financial records, tax filings, and business formation documents for at least 7 years. Includes ledgers, invoices, tax returns, and bank statements. Federal IRS also recommends 7 years for tax-related records.

Most jurisdictions require the business license or tax certificate to be displayed in a public area of the business premises. Applies to storefronts or workshops open to clients or inspectors.

This is the first of the biennial Statements of Information. Failure to file within 90 days results in a late fee and a notice of delinquency. Required for all LLCs.

Cities like Los Angeles, San Francisco, and San Diego impose gross receipts taxes. Rates based on revenue. Must register and file locally. Example: Los Angeles Business Tax is due annually by January 31.