New Construction Plumbing Contractor Serving St. Louis, St. Charles & Jefferson County
Legacy Plumbing has installed commercial plumbing systems for new-build projects across the St. Louis metro since 1996. Our master-licensed team handles everything from underground rough-in through final fixture trim-out, on schedule and on budget.
Bid My New Construction Project
Tell us scope, schedule, and site address. We reply within one business day.
Who We Serve on Ground-Up Work
- Industrial and manufacturing facilities
- Warehouse, distribution and cold storage
- Medical office buildings and clinics
- Schools and municipal buildings
- Mid-size commercial shells and retail centers
- General contractors bidding plan-and-spec work
How a New Construction Job Runs
Takeoff & Hard Bid
We price off your plans and specs, flag scope gaps, and return a written number your estimator can rely on.
Underground Rough-In
Sanitary, storm and water service set and tested before the slab pour, coordinated with the site contractor.
Above-Ground Rough
Waste, vent, domestic water and gas run tight to the model so other trades keep moving.
Trim & Fixture Set
Fixtures, carriers, water heaters and specialties installed and protected for turnover.
Test, Inspect, Close Out
Pressure tests, chlorination, inspector walk and O&M documents delivered with the punch list clear.
Why Choose Legacy for New Construction
Why Contractors Hand Us the Plumbing Scope
29 years of commercial-only experience
We have never chased residential volume. Every crew we field has built commercial and industrial systems.
Master-licensed across the metro
Licensed in St. Louis City, St. Louis County, St. Charles County and Jefferson County jurisdictions.
Manpower that holds the schedule
UA Local 562 manpower means we can add bodies when the GC compresses the schedule instead of asking for more float.
Written pre-job planning
Every job starts with a written plan so material, manpower and inspections are sequenced before day one.
Request a New Construction Bid
Send scope, schedule and site address. We reply within one business day.
Bid My New Construction Project
Tell us scope, schedule, and site address. We reply within one business day.
Need a Plumber in St. Louis or the Surrounding Area?
Same-day estimates, transparent pricing, and 25+ years of trusted craftsmanship across the St. Louis metro and a 2-hour radius.