Commercial Plumbing Estimator Careers in St. Louis
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.
Who this is for
- Estimators already bidding commercial plumbing or site utilities
- Field plumbers and foremen ready to move inside and bid the work
- People who read drawings closely enough to catch scope gaps before bid day
Work you'd do
- Healthcare and medical office plumbing, including medical gas scopes
- Education and other institutional buildings
- Tenant finish inside occupied buildings
- Design-assist and preconstruction budgets with owners and GCs
- Underground sanitary, storm, and water service with self-performed excavation
Tools and process
- Digital takeoff on commercial plumbing, underground site utilities, and med gas
- Reading civil, architectural, and MEP drawings
- Design-assist and preconstruction pricing
What we look 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
- Field or journeyman background is a strong plus
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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