# Commercial Plumber in Festus, MO > Commercial permit applications go to the City of Festus Building Department at Public Works, 950 N 5th St. Legacy Plumbing plans commercial work around it. Canonical: https://legacyplumbingmo.com/service-area/festus-mo Last updated: 2026-10-30 Jefferson County, MO Festus issues its own commercial plumbing permits. Legacy Plumbing serves Festus with commercial plumbing and select residential service. In Festus our service context includes I-55 commercial properties in the Festus–Crystal City twin-cities area; these local landmarks do not imply completed projects at those sites. [Request a Bid in Festus](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120) ## Free Estimate — Festus Same-business-day response from our O'Fallon office. ## The Festus permit and inspection process Public facts from government and utility sources, not Legacy Plumbing project claims. - Commercial permit applications go to the City of Festus Building Department at Public Works, 950 N 5th St. [City of Festus](https://festusmo.gov/222/Commercial-Building-Permit-Requirements) - The city distributes water treated at the Jefferson County Water Authority's Cathy Jokerst plant; sewer is the Jefferson County Public Sewer District, treated at the Twin City plant. [City of Festus](https://festusmo.gov/306/Utilities) Public sources checked 2026-10-30 ## Legacy Plumbing projects in and near Festus Festus doesn't have a documented job within about 15 miles on our list yet; our nearest recent project is in Crestwood, about 23 miles away. Distances are straight-line between town centers. - [Nearest recent project — Crestwood, ~23 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](https://legacyplumbingmo.com/projects/restaurant-plumbing-crestwood-mo) - [Nearest recent project — Webster Groves, ~26 mi ### Dental office in an occupied building (2026) Webster Groves Dental build-out with four water closets, four wall-hung lavatories and a 40-gallon water heater, worked around occupied space below. View project scope](https://legacyplumbingmo.com/projects/dental-office-plumbing-webster-groves-mo) ## Services matched to Festus's permit process ### Ground-up new construction New commercial buildings in Festus, plan-reviewed by the city. Explore ground-up new construction ### Service & repair Scheduled repairs, water heaters and drain work for Festus properties, plus select residential calls. Explore service & repair ### Backflow install & testing Annual testing and assembly replacement for Festus buildings. Explore backflow install & testing ### Tenant build-outs Suite plumbing for new tenants in Festus. Explore tenant build-outs ## Bidding and building in Festus Festus sits in Jefferson County, MO, roughly 44 straight-line miles from our O'Fallon shop; the closest towns we also serve are Crystal City (about 1 mi), Herculaneum (about 3 mi) and Pevely (about 4 mi). Legacy Plumbing has worked as a UA Local 562 signatory [commercial plumbing contractor in St. Louis](https://legacyplumbingmo.com/) since 1996, and the [Jefferson County plumbing hub](https://legacyplumbingmo.com/locations/jefferson-county) covers the wider area. ## Licensed to pull plumbing permits in Festus For Festus work, our master plumbers pull the plumbing permit through the jurisdiction covering Festus in Jefferson County ourselves. Legacy Plumbing is licensed to pull plumbing permits in every St. Louis–area jurisdiction we serve: St. Louis City, St. Louis County and its municipalities, St. Charles County and Jefferson County. FAQ ## Festus Plumbing Questions - **Who issues commercial plumbing permits in Festus?:** Commercial permit applications go to the City of Festus Building Department at Public Works, 950 N 5th St. ## Nearby areas we serve - [Commercial plumbing in Crystal City](https://legacyplumbingmo.com/service-area/crystal-city-mo) - [Commercial plumbing in Herculaneum](https://legacyplumbingmo.com/service-area/herculaneum-mo) - [Commercial plumbing in De Soto](https://legacyplumbingmo.com/service-area/de-soto-mo) - [Commercial plumbing in Hillsboro](https://legacyplumbingmo.com/service-area/hillsboro-mo) ## Need a Plumber in Festus? Call 636-978-0120 or request your free estimate — we respond same business day across Jefferson County. [Get Free Estimate](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120) ## Related - [Contact Legacy Plumbing](https://legacyplumbingmo.com/contact-us) - [Company facts](https://legacyplumbingmo.com/company-facts) - [All pages (llms.txt)](https://legacyplumbingmo.com/llms.txt)