Local Union 403 proudly represents the hardest working, highly skilled men and women in the plumbing, pipefitting and HVACR industry.  Our premier training programs offer a five-year apprenticeship program, and extensive journeymen upgrade training.  We help our signatory contractors grow their market share by identifying new opportunities, and by providing the most skilled and highly trained workforce in the industry.  We are committed to teaming with our cities, our schools and our local businesses to provide a great working environment that grows our economy and keeps San Luis Obispo strong and safe.

​

San Luis Obispo is a special place characterized by its breathtaking coastline and world class wine country. The county is home to California Polytechnic University - San Luis Obispo, the Diablo Canyon Power Plant, Hearst Castle state historical monument and an active agricultural and farming industry. These and other industries in the county provide the foundation for a growing and vibrant construction and service sector. These industries demand the highest levels of safety training, quality workmanship and productivity. Here at Local 403 we are meeting these challenges and we know that we will get the job done safely, on time and within the budget.