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Welcome to the website of UA Local 403

Thank you for visiting the website of the San Luis Obispo county Plumbers and Steam Fitters Local 403. Since 1941 Local 403 has continuously represented Plumbers, Steam Fitters, Pipefitters, Welders and  HVACR Service Technitions in the County of San Luis Obispo. Together with our employer partners we offer apprenticeship, Journeyman upgrade training, competitive wages and benefits that set the standard in the industry. Please take the time to look around and feel free to contact us and let us know how we can help you to start or continue a career in Plumbing, Pipefitting, Steam Fitting, Welding and  HVACR Service. 

Featured Apprentice

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Justin Gibbons


Our featured apprentice is Local 403 fourth year apprentice Justin Gibbons. A proud husband and father of two…soon to be three!  Justin is a former Marine Corps Infantry Rifleman and veteran of the Iraq war. As you might guess, brother Gibbons is no stranger to hard work. Justin has been in the apprenticeship since April of 2017. In Justin’s own words “ I kick ass through the good days and the bad and continue to make a name for myself in this industry”.


Justin spends his free time with his family or getting ready for the next work week. Local 403 would like to thank brother Gibbons for his service to our country and to this union.


Thank you brother Gibbons!

Featured Journeyman

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Scott Sherman


Local 403 Journeyman Plumber Scott Sherman feels deeply honored to be a member of Local 403. Since joining Local 403 in 2009 as an apprentice, Scott has found that the training he has received through Local 403 has made all the difference in helping him define and achieve his career goals.  As a 31-year old, fourth-generation native of San Luis Obispo County, Scott credits the strong work ethic of his maternal Swiss-Italian grandfather (Americo Poletti) with instilling in him the rewarding feeling that comes from a hard day’s work. As a youth Scott assisted his grandfather in a variety of necessary daily duties on every aspect of his 500-acre cattle ranch on Orcutt Road in San Luis Obispo.  Scott is currently employed by HPS Mechanical. He has enjoyed working on many of San Luis Obispo counties signature projects such as the Cal Poly University Utilidor Installation, The San Luis Obispo County Regional Airport, the San Luis Obispo County Juvenile Hall and he is especially proud to be currently working on his alma mater, San Luis Obispo Senior High School. In his free time brother Sherman enjoys ocean fishing, hiking and disc golf.

Plumbers and Steamfitters Local 403

San Luis Obispo County

3710 Broad Street
San Luis Obispo, CA 93401

Telephone: (805) 543-2416
Fax: (805) 541-0251

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