Licensed & Bonded · Local 562 Plumbers & Pipefitters 636-978-0120
Tenant Improvement

Tenant Build-Out Plumbing Contractor Serving St. Louis, St. Charles & Jefferson County

Legacy Plumbing builds out commercial tenant spaces throughout the St. Louis metro, from single-suite dental offices to full-floor office and industrial conversions. Our licensed crews work inside occupied buildings without shutting the rest of the tenants down.

Price My Build-Out

Tell us scope, schedule, and site address. We reply within one business day.

By submitting you agree to be contacted about your project. No spam — we only use your info to schedule your service.

Who We Serve

Spaces We Build Out

  • Dental and medical suites
  • Office suites and corporate floors
  • Light industrial and flex space
  • Retail and service tenants
  • Veterinary and outpatient clinics
  • Property managers turning vacant suites
Our Process

How a Build-Out Runs

1

Walk the Suite

We field-verify existing waste, water and gas before pricing so surprises stay out of the change order log.

2

Permit & Coordinate

Plans submitted to the local jurisdiction and sequenced with the building engineer and other trades.

3

Demo & Rough-In

Selective demo, core drilling and rough-in scheduled around tenant hours where the building requires it.

4

Trim & Inspection

Fixtures set, tested and inspected so the tenant can take occupancy on the promised date.

Why Choose Legacy for Tenant Build-Out

Why Property Teams Call Us for Build-Outs

Same-day response on active build-outs

When a wall opens up and the layout changes, we get someone on site that day instead of next week.

Comfortable in occupied buildings

Water shutdowns are noticed, scheduled and communicated to the building engineer before a valve turns.

Licensed in every metro jurisdiction we work

St. Louis City and County, St. Charles County and Jefferson County permits are routine for us.

One point of contact

The same project manager runs your suite from pricing through final inspection.

Request a Tenant Build-Out Bid

Send scope, schedule and site address. We reply within one business day.

Price My Build-Out

Tell us scope, schedule, and site address. We reply within one business day.

By submitting you agree to be contacted about your project. No spam — we only use your info to schedule your service.

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.