Last updated August 23, 2026
Everything you need to get into Plumbers, Steamfitters & Refrigeration Fitters Local 403: whether apprenticeship applications are open right now, how the process works, and a free alert the moment the next window opens.
We're still verifying this local's application schedule — you'll be notified the moment we confirm a window.
Status last verified August 23, 2026. Source: official local/JATC site. Windows can change on short notice — always confirm details with the local before making plans.
Windows at competitive locals can cap out in days. We watch San Luis Obispo’s application status and email you the moment it opens — so you apply on day one, not day last.
We publish a journeyman rate only where the US Department of Labor has a union wage determination for the local — that figure is the local's own negotiated scale, because DOL adopts collective-bargaining rates wholesale. The counties covering San Luis Obispo, CA are on wage surveys instead, which are not union scale, so there is no rate here we can stand behind.
For reference, the median journeyman base across the 170 UA locals that do publish one is $46.10/hr — about $95,900/yr at 2,080 hours. Ask UA Local 403 directly for its current scale.
All 170 UA pay scales →UA Local 403 is based in San Luis Obispo, California. It represents and trains: Plumber, Pipefitter, Steamfitter, HVAC/R.
Union hall: (805) 543-2416
From our last verification: No application process or window is published: the local's apprenticeship page (ua403.org/apprenticeship-training) contains only a 'JOIN OUR APPRENTICESHIP' heading with no application details, dates, or links, and no JATC site was found. DC16/A&J-affiliated local (site nav references A&J accreditation and JUT requirements); A&J Training Trust routes apprenticeship applications through the UA Pipe Careers portal (pipetradecareers.com), but no Local 403-specific listing could be verified. Contact: (805) 543-2416, 3710 Broad St, San Luis Obispo.
Most UA locals rank applicants by aptitude-test score and fill seats from the top down. The applicants who get in prepped early — start with a free GAN-style practice test or the GAN aptitude test guide.
As of August 23, 2026: We're still verifying this local's application schedule — you'll be notified the moment we confirm a window. Application schedules are set by the local and its training fund and can change on short notice — always confirm on the local's own site before making plans.
Applications go through the local's apprenticeship/training program. The usual process: submit the application with your HS diploma or GED and ID, take the aptitude test, then complete a scored interview that sets your rank on the eligibility list.
UA Local 403 (San Luis Obispo, California) represents Plumber, Pipefitter, Steamfitter, HVAC/R — its apprenticeship program trains those trades. If you want a different pipe trade, check the neighboring UA locals in the directory.
Most UA locals test applicants with the GAN aptitude battery — reading comprehension, numerical computation and reasoning, problem solving, paper folding, and mechanical comprehension — and rank candidates by score. Your test score plus interview decide your ranking, so prep before the window opens.
Or compare every California local side by side: union plumber pay in California.
Applying is step one — the aptitude battery and the scored interview decide your rank. Set this local in the app and your study plan gets paced to its deadline.
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PipePrep AI is an independent directory and study tool — not affiliated with, endorsed by, or connected to the United Association (UA), any UA local, any JATC or training fund, or GAN Human Resources. Application windows, fees, and requirements change constantly; always verify details on the local's own website before you act on anything here.