Commercial Plumbing Jobs in St. Louis, MO
Build a Career, Not Just Hours.
Legacy Plumbing is hiring project managers, estimators, foremen, and journeyman plumbers across the St. Louis metro — plus apprentices and commercial service techs. UA Local 562 signatory: scale wages, health, pension, and annuity on every hour, paid certifications, and a written path from apprentice to journeyman to foreman to superintendent.
The Job, Described Honestly
No mission statements. Here's how the work actually runs on our St. Louis jobsites.
Pre-job planning, in writing
Before a crew mobilizes, the job gets a written plan — scope, sequence, material staging, and who owns what. You show up knowing the day's work instead of guessing at the gang box.
Trained foremen, real supervision
Foremen here go through leadership and layout training before they run a crew. Nobody gets handed six guys and a prayer. If you're stuck, there's someone on site who can actually answer.
Tools and material that show up
Specialty tools, press gear, jetters, locators, and cameras are company-provided and maintained. Material gets ordered off the plan, not off a panic phone call at 9am.
A path you can see
Apprentice to journeyman to foreman to superintendent or estimator. Each step has a written expectation list, so you know what you're being measured on before the conversation happens.
Modern estimating and scheduling
Jobs are bid and scheduled with current software and field-verified layout — including total station layout on larger projects — so field work gets set up to succeed instead of chased.
Small enough to know your name
You'll talk to the people who run the company, not a call center. Feedback from the field actually changes how the next job gets built.
Apprentice to Superintendent
Four steps. Each one has a wage band, a training list, and a set of expectations you can read before you're measured against them.
- 01
Apprentice
Pay: % of Local 562 scale, steps up yearly
- Indentured through the Local 562 program — paid field hours, night classes, tuition covered.
- Paired with a journeyman on real installs from day one.
- 02
Journeyman
Pay: full Local 562 journeyman scale
- You own your installs — rough-in, top-out, trim, and the inspection that follows.
- Certifications added as you go: backflow, med gas brazing, confined space.
- 03
Foreman
Pay: scale + foreman premium
- Run the crew, the sequence, the layout, and the quality on your job.
- Leadership, scheduling, and layout training before you take the crew.
- 04
Superintendent / Estimator
Pay: salaried, based on scope and experience
- Multiple jobs, GC relationships, manpower planning — or move inside and bid the work.
- Trained on takeoff, estimating, and project management software.
Wage bands follow the current UA Local 562 agreement. Ask us or the hall for today's published rates.
Commercial Plumbing Jobs in the St. Louis Metro
We're actively hiring project managers, estimators, foremen, and journeyman plumbers for work across St. Louis, St. Charles County, and Jefferson County. Every application gets read by a person here — usually a callback within one business day.
Commercial Plumbing Project Manager
Own commercial plumbing projects in the St. Louis metro end to end — buyout, submittals, schedule, manpower, change orders, and closeout — with self-performed underground and a field team that plans the work.
What we're looking for
- 3+ years managing commercial plumbing or mechanical projects ($250K–$10M scopes)
- Comfortable running submittals, RFIs, buyout, and monthly billings
- Field or journeyman background strongly preferred
Commercial Plumbing Estimator
Take off and bid commercial plumbing, underground site utilities, and medical gas scopes across St. Louis, St. Charles, and Jefferson County. Plan-and-spec plus design-build work.
What we're looking for
- Experience with digital takeoff and plumbing/site utility bidding
- Able to read civil, architectural, and MEP drawings and catch scope gaps
- Vendor and subcontractor pricing relationships in the St. Louis market
Plumbing Foreman — Commercial Projects
Run a crew on tenant finish through mid-size ground-up commercial projects. Layout, sequence, quality, and manpower are yours — with leadership and total station layout training provided.
What we're looking for
- Journeyman card and prior crew leadership on commercial work
- Strong layout, coordination, and inspection track record
- Able to plan a week of work and hold the schedule
Journeyman Plumber — Commercial Construction
Ground-up, tenant finish, and industrial work. Rough-in, top-out, trim, and the inspection that follows — with a foreman who plans the day and material that shows up.
What we're looking for
- UA journeyman card (Local 562 member or ready to organize in)
- Commercial rough-in, cast iron, copper, press, and PVF experience
- Med gas or backflow certification a plus — we pay for it if you don't have it
Journeyman Plumber — Commercial Service
Stocked truck, scheduled 7am–3:30pm dispatch, repeat commercial accounts. Diagnostics, water heaters, drain cleaning, camera work, and backflow. No overnight on-call.
What we're looking for
- Journeyman-level commercial service and troubleshooting experience
- Clean driving record and customer-facing professionalism
- Drain cleaning, camera, and backflow experience welcome
Underground / Site Utility Plumber
Sanitary, storm, and domestic water service work. Excavation is self-performed, so you work alongside our own crews and equipment instead of waiting on somebody else's.
What we're looking for
- Underground sanitary, storm, and water service installation experience
- Grade, laser, or total station familiarity
- Comfortable on active site work with excavation crews
Plumbing Apprentice
Indentured through Local 562. Classes paid, mentored on the tools by a journeyman, wage steps every year as you bank hours.
What we're looking for
- Reliable transportation and a real willingness to show up
- Ready to indenture through the Local 562 apprenticeship
- No prior experience required
Office roles (project manager, estimator) are based at our O'Fallon, MO office with regular jobsite time. Field roles (foreman, journeyman plumber, apprentice, service tech) are dispatched to jobsites across the St. Louis service area. See the kind of work you'd be building on our recent commercial projects.
Straight Answers
Want to hear it from the hall? UA Plumbers & Pipefitters Local 562 handles dispatch and apprenticeship intake.
Local 562Send Us Your Info Anyway
Work moves. Three fields and we'll call you when something fits.