Commercial Plumbing in Frontenac, MO
Frontenac contracts with St. Louis County, so commercial plumbing permits run through the county. Legacy Plumbing serves Frontenac with commercial plumbing and select residential service. In Frontenac our commercial plumbing focus includes retail properties around Plaza Frontenac.
Free Estimate — Frontenac
Same-business-day response from our O'Fallon office.
Who permits plumbing work in Frontenac
Public facts from government and utility sources, not Legacy Plumbing project claims.
- Frontenac contracts with St. Louis County for the mechanical, electrical and plumbing codes (the city runs its own building code), so commercial plumbing permits and inspections run through St. Louis County Transportation & Public Works. St. Louis County Transportation & Public Works
- MSD's Spoede Road Sanitary Improvements replaced about 750 ft of undersized sewer on Spoede Rd and Villa Coublay Dr with 15-inch pipe. MSD Project Clear
Public sources checked 2026-10-30
Commercial plumbing services in Frontenac
Service & repair
Scheduled drain, lateral and water heater repairs in Frontenac, where MSD has worked on undersized sewers.
Explore service & repairTenant build-outs
Office, retail and medical suites in Frontenac, with permits through the county.
Explore tenant build-outsBackflow install & testing
Annual testing and assembly replacement for Frontenac buildings.
Explore backflow install & testingScheduling commercial plumbing in Frontenac
Frontenac sits in St. Louis County, MO, roughly 20 straight-line miles from our O'Fallon shop; the closest towns we also serve are Ladue (about 2 mi), Creve Coeur (about 2 mi) and Des Peres (about 3 mi). Legacy Plumbing has worked as a UA Local 562 signatory commercial plumbing contractor in St. Louis since 1996, and the St. Louis plumbing hub covers the wider area.
Licensed to pull plumbing permits in Frontenac
Plumbing permits for Frontenac go through the jurisdiction covering Frontenac in St. Louis County, and Legacy Plumbing holds the licensing to pull them. Our master plumbers file permits across every St. Louis–area jurisdiction we serve, from St. Louis City, St. Louis County and its municipalities, St. Charles County and Jefferson County.
Legacy Plumbing projects in and near Frontenac
Our closest documented work to Frontenac is in Webster Groves, Richmond Heights, Crestwood, Hazelwood, within about 10 straight-line miles — dental office in an occupied building, dental surgical center, restaurant build-out and multi-operatory dental office. Distances are straight-line between town centers.
- Near Frontenac — Webster Groves, ~4 mi
Dental office in an occupied building (2026)
Webster Groves
Dental vacuum and compressed air, sink connections and tie-ins to existing systems, completed with after-hours shutdowns in a multi-tenant building.
View project scope - Near Frontenac — Richmond Heights, ~5 mi
Dental surgical center (2024)
Richmond Heights
Surgical center interior with 19 clinical and staff sinks, seven accessible restrooms, a duplex grinder lift station and a tankless water heater with an RPZ.
View project scope - Near Frontenac — Crestwood, ~6 mi
Restaurant build-out (2025)
Crestwood
Kitchen drainage, grease interception and water heating for a new restaurant space, plus restroom fixtures and permits within the same interior package.
View project scope - Near Frontenac — Hazelwood, ~10 mi
Multi-operatory dental office
Hazelwood
Medical gas, dental vacuum, backflow and water heater work for a dental practice build-out that opened on schedule for patients.
View project scope
Frontenac Plumbing Questions
- Can you coordinate plumbing for a retail tenant around Plaza Frontenac?
- Yes. Retail tenant work can include restroom fixtures, water heaters and domestic water and waste tie-ins. We coordinate access and shutdowns with the property manager; this service context is not a claim of a completed Plaza Frontenac project.
- Who issues commercial plumbing permits in Frontenac?
- Frontenac contracts with St. Louis County for the mechanical, electrical and plumbing codes (the city runs its own building code), so commercial plumbing permits and inspections run through St. Louis County Transportation & Public Works.
Nearby areas we serve
Need a Plumber in Frontenac?
Call 636-978-0120 or request your free estimate — we respond same business day across St. Louis County.