Boilermaker in California: Salary, License Requirements, and How to Start
Skilled trades
California employs 720 boilermakers, with a statewide median of $118,150 and wide variation by city and experience. Here is the real wage data, the exact California licensing picture, and where to train.
What Boilermakers Earn in California (May 2025)
- California median pay
- $118,150 (May 2025)
- Starting range (10th percentile)
- $83,960
- Experienced (75th percentile)
- $129,390
- Top earners (90th percentile)
- $136,900
- Employed in California
- 720
- U.S. median (for comparison)
- $72,280 (May 2024)
Wages vary substantially by metro. Median annual pay for boilermakers in major California markets:
- Los Angeles
- $110,370 (320 employed)
What That Pay Is Worth in California
Prices in California run about 11% above the national average (cost-of-living index 110.7 vs a U.S. baseline of 100, 2024), so the $118,150 median is worth closer to $106,730 once higher local prices are factored in.
California License and Certification Requirements
IBB Journeyman Boilermaker (apprenticeship credential — no CA state license) — regulated by the No California state boilermaker license — IBB apprenticeship is the standard.
- California does not issue an individual boilermaker mechanic license. Entry is through an IBB Joint Apprenticeship Training Committee (JATC) apprenticeship: 3–4 years, ~6,000 hours of OJT plus classroom instruction in welding, rigging, and boiler construction.
- Apprentices earn ASME Section IX pressure vessel welding qualifications — essential for boiler work. California also requires Cal/OSHA compliance for boiler installation and pressure vessel work.
- California's refineries (Bay Area, Southern California), power plants, and industrial facilities provide steady boilermaker work. Project-based travel is common — journeymen often work refinery turnarounds across the West Coast.
Training in California
IBB Local Lodge 549 serves California. Cal/OSHA has specific pressure vessel regulations; journeymen working on California-regulated boilers must ensure their welder qualifications meet ASME Code. The Bay Area and Southern California refinery corridors offer some of the strongest boilermaker wages in the US.
Is This the Right Move for You?
Best for: People who want strong union wages and are comfortable with industrial environments, heights, and confined spaces.
Think twice if: Extreme heat, industrial noise, physical intensity, and travel to job sites sound unappealing.
Why it's resilient: Boilermakers install and maintain pressure vessels, tanks, and heat exchangers in industrial settings — licensed work that requires physical presence and specialized expertise.
First Steps
Contact the International Brotherhood of Boilermakers (IBB) for apprenticeship openings in your region.
Frequently Asked Questions
How much do boilermakers make in California?
The median wage for boilermakers in California is $118,150 per year (May 2025, BLS). Entry-level pay (10th percentile) starts around $83,960, and top earners (90th percentile) make about $136,900. Pay varies by metro and years of experience.
What license or certification do you need to become a Boilermaker in California?
IBB Journeyman Boilermaker (apprenticeship credential — no CA state license), overseen by the No California state boilermaker license — IBB apprenticeship is the standard. California does not issue an individual boilermaker mechanic license. Entry is through an IBB Joint Apprenticeship Training Committee (JATC) apprenticeship: 3–4 years, ~6,000 hours of OJT plus classroom instruction in welding, rigging, and boiler construction.
Is being a Boilermaker a good career in California?
Boilermakers install and maintain pressure vessels, tanks, and heat exchangers in industrial settings — licensed work that requires physical presence and specialized expertise.
Which California metros pay boilermakers the most?
Among California metro areas, Los Angeles leads at $110,370. Local pay tracks regional demand and cost of living, so the highest-paying metro isn't always the best net move.
Sources and Verification
Wage data: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025), California statewide and metro estimates for SOC 47-2011. Licensing summary compiled from the No California state boilermaker license — IBB apprenticeship is the standard (2026-06-11). Requirements change — always confirm current rules with the board and verify program costs and outcomes before enrolling.
BLS Occupational Outlook · O*NET California wages · California licensing/certification source
Cost of living: BEA Regional Price Parities.
Pay percentiles describe current workers, not entry-level offers; training costs and local demand vary, so verify locally before committing money or quitting a job.