UA Local 38 represents plumbers, steamfitters & hvac/r in San Francisco, CA. Below: wage scale context, jurisdiction, apprenticeship routes, and the signatory contractors that hire from this hall.
United Association Local 38 represents the highly skilled plumbers, pipefitters, and HVAC technicians serving the City and County of San Francisco along with Marin, Sonoma, Mendocino, and Lake counties. As one of the most prominent labor organizations in Northern California, Local 38 sets the standard for high-density urban plumbing and complex mechanical systems. The local is instrumental in maintaining the aging infrastructure of the peninsula while facilitating the massive high-rise developments that define the skyline. Its members operate under rigorous safety standards and technical requirements unique to the seismic and density challenges of the Bay Area market.
Since 2014, Gulfstream Strategic Placements has monitored the labor landscape for Local 38, noting its influence on prevailing wage rates across the West Coast. The local maintains a robust presence in both the private commercial sector and public works, ensuring that large-scale infrastructure projects, healthcare facilities, and biotech laboratories have access to a qualified workforce. Because the San Francisco market is characterized by high living costs and extreme technical complexity, the union focuses heavily on continuous education and workforce development. This ensures that signatory contractors remain competitive by utilizing a workforce capable of executing intricate piping layouts and sustainable water management systems.
The wage schedule for UA Local 38 reflects the specialized nature of the San Francisco labor market, with a journeyman hourly rate of $91.00 effective August 22, 2025. It is important to note that the total package figure provided matches the hourly wage, suggesting the fringes are either managed via a distinct employer-paid structure or are inclusive of the taxable rate; users should verify the exact breakdown of the $91.00 total with the business office. Apprentices enter the program at a percentage of the journeyman rate, typically starting at 40% to 50% and receiving incremental raises every six to twelve months as they complete required OJT hours and classroom modules. This progression ensures that as a worker's proficiency in complex hydronic and sanitary systems increases, their compensation reflects their growing value to the signatory mechanical firms.
The territorial jurisdiction of UA Local 38 is extensive, covering the core urban center of San Francisco and extending north through the diverse landscapes of Marin, Sonoma, Mendocino, and Lake counties. This creates a wide variety of work environments, ranging from zero-lot-line skyscraper construction in the Financial District to sprawling industrial and agricultural piping projects in the northern reaches. The local manages dispatch for all covered plumbing, steamfitting, and refrigeration work within these borders. Members may find themselves assigned to seismic retrofitting projects in historic buildings or new construction within the biotech hubs. Contractors operating within this jurisdiction must adhere to the specific terms regarding travel pay and subsistence as outlined in the Master Labor Agreement.
The signatory landscape for UA Local 38 is comprised of approximately 125 active contractors, ranging from massive multi-state mechanical primes to specialized local plumbing shops. These firms handle a vast array of projects, including high-rise residential towers, municipal water treatment facilities, and critical healthcare infrastructure. Hiring cycles often follow the progression of major commercial developments in the South of Market (SoMa) area and public infrastructure upgrades throughout the peninsula. Because the technical requirements in San Francisco are among the most stringent in the nation, signatory contractors rely on the local's training center to supply labor that is pre-certified in advanced welding, medical gas, and green building technologies.