UA Local 355 pays plumber, steamfitter — san mateo county determination members $87.75/hr in straight-time wages, and $129.84/hr once benefit and fringe contributions are added, effective August 22, 2025 per the California DIR general prevailing wage determination SMA-2026-1 wage determination. Rates change with each contract cycle — confirm the current step with the Burlingame, CA hall before quoting an offer.
UA Local 355 Plumber, Steamfitter — San Mateo County determination — effective August 22, 2025 · source California DIR general prevailing wage determination SMA-2026-1
| Base hourly wage | $87.75/hr | Straight-time plumber, steamfitter — san mateo county determination rate on the current wage determination, before fringes. |
|---|---|---|
| Total package | $129.84/hr | Wage plus all employer-paid benefit and fringe contributions per hour worked. |
| Approximate annual wage | $175,500/yr | Derived: base hourly × 2,000 hours. Actual earnings depend on hours dispatched, overtime and travel. |
| Effective date | August 22, 2025 | Date this rate took effect under the agreement, as printed on the California DIR general prevailing wage determination SMA-2026-1 wage determination. |
| Classification | Plumber, Steamfitter — San Mateo County determination | Rate applies to this classification only. Apprentice steps, foremen and shift work are paid on separate lines of the wage determination. |
Roughly 32% of the UA Local 355 package is employer-paid benefits and fringes rather than wages, which is why the package figure and a take-home hourly rate are not the same number.
| Benefit & fringe contributions | $42.09/hr | Derived: total package minus base wage. This is the employer's combined hourly contribution to the funds, not take-home pay. |
|---|---|---|
| What the contributions fund | Health & welfare, pension, annuity, training and industry funds | Standard fund categories in mechanical and electrical agreements. The exact split between funds is set in the local's agreement — the hall or fund office publishes the schedule. |
| Paid on | Every hour worked | Fringe contributions are made per hour worked, so they scale with dispatched hours and are paid to the funds rather than to the member. |
Effective: August 22, 2025 · High confidence
Read directly from the primary source (California DIR general prevailing wage determination SMA-2026-1) and cross-checked at build time. Highest confidence for offer benchmarking.
Last cross-checked against the source: Sep 14, 2026.
View the California DIR general prevailing wage determination SMA-2026-1 source
UA Local 355 — 426 Alabama St Vallejo, CA 94590. 707-644-0355. Gulfstream is a private recruiting firm — we do not run dispatch and we do not set union rates.
$87.75/hr in base wages for plumber, steamfitter — san mateo county determination, or $129.84/hr counting employer-paid benefits and fringes, effective August 22, 2025 per the California DIR general prevailing wage determination SMA-2026-1 wage determination.
August 22, 2025. Read directly from the primary source (California DIR general prevailing wage determination SMA-2026-1) and cross-checked at build time. Highest confidence for offer benchmarking.
No — the $87.75/hr base is wages only. Employers contribute roughly $42.09/hr more per hour worked to health and welfare, pension, annuity and training funds, which is the difference between the base and the $129.84/hr package.
No. Gulfstream Strategic Placements is a private mechanical construction recruiting firm. We are not affiliated with the local, we do not run dispatch, and we do not set or negotiate union rates. We publish the local's own sourced figures as a reference for members and contractors.
High confidence — last cross-checked against the source on Sep 14, 2026 (8 days ago). Always confirm the current step with the hall before relying on it for an offer.