Commercial Plumbing Project Manager Careers in St. Louis
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.
Who this is for
- Project managers running commercial plumbing or mechanical work
- Superintendents and foremen ready to move into project management
- People who came off the tools and still like jobsite time
Work you'd do
- Healthcare and medical office plumbing, including medical gas
- Education and institutional buildings
- Tenant finish inside occupied buildings
- Design-assist and preconstruction projects
- Projects in the $250K–$10M range
Tools and process
- Buyout, submittals, RFIs, schedule, and manpower planning
- Change orders and monthly billings
- Written pre-job plans before a crew mobilizes
What we look 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
See the work: Healthcare plumbing · Education plumbing · Medical gas piping · Tenant finish plumbing · Design-assist & preconstruction · Commercial service
UA Local 562 and pay
Legacy Plumbing is a UA Local 562 signatory contractor, so all field work goes through the hall — but we hire card-carrying members, travelers, and non-union plumbers who are ready to organize in.
Project manager and estimator are salaried office positions based at our O'Fallon, MO office with regular jobsite time. Pay is set by scope and experience rather than the Local 562 scale, and most of the people who do these jobs well came off the tools first.
UA Local 562Career ladder
- 01
Apprentice
- 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
- 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
- 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
- Multiple jobs, GC relationships, manpower planning — or move inside and bid the work.
- Trained on takeoff, estimating, and project management software.
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