# Commercial Plumber in Crestwood, MO > In Crestwood, Missouri American Water has replaced about 5,750 ft of main on S. Holmes Rd, Big Bend Rd and nearby streets. Legacy Plumbing bids there. Canonical: https://legacyplumbingmo.com/service-area/crestwood-mo Last updated: 2026-10-30 St. Louis County, MO Crestwood contracts with St. Louis County, so commercial plumbing permits run through the county. Legacy Plumbing serves Crestwood with commercial plumbing and select residential service. Legacy Plumbing completed interior plumbing for a new Crestwood pizza restaurant, including 18 floor sinks, solids and indoor grease interceptors, water heating and restroom fixtures. [Request a Bid in Crestwood](https://legacyplumbingmo.com/contact-us) [636-978-0120](tel:+16369780120) ## Free Estimate — Crestwood Same-business-day response from our O'Fallon office. ## Who permits plumbing work in Crestwood Public facts from government and utility sources, not Legacy Plumbing project claims. - Crestwood contracts with St. Louis County for the building, mechanical, electrical and plumbing codes, so commercial plumbing permits and inspections run through St. Louis County Transportation & Public Works. [St. Louis County Transportation & Public Works](https://stlouiscountymo.gov/st-louis-county-departments/transportation-and-public-works/publications-and-manuals/matrix-information/municipality-contracts/) - Missouri American Water has replaced about 5,750 ft of main on S. Holmes Rd, Big Bend Rd and nearby streets. [City of Crestwood](https://www.cityofcrestwood.org/m/newsflash/home/detail/297) - MSD's Mulberry Creek Sanitary Relief in Crestwood and Sunset Hills replaces about 4,400 ft of pipe with 8- to 27-inch sewer and eliminates one overflow point. [MSD Project Clear](https://msdprojectclear.org/system-improvements/new-construction/mulberry-creek-sanitary-relief-12355/) Public sources checked 2026-10-30 ## Commercial plumbing services in Crestwood ### Service & repair Scheduled drain, lateral and water heater repairs in Crestwood, where MSD has worked on undersized sewers. Explore service & repair ### Tenant build-outs Office, retail and medical suites in Crestwood, with permits through the county. Explore tenant build-outs ### Backflow install & testing Annual testing and assembly replacement for Crestwood buildings. Explore backflow install & testing ## Scheduling commercial plumbing in Crestwood Crestwood sits in St. Louis County, MO, roughly 24 straight-line miles from our O'Fallon shop; the closest towns we also serve are Sunset Hills (about 2 mi), Kirkwood (about 2 mi) and Webster Groves (about 3 mi). Legacy Plumbing has worked as a UA Local 562 signatory [commercial plumbing contractor in St. Louis](https://legacyplumbingmo.com/) since 1996, and the [St. Louis plumbing hub](https://legacyplumbingmo.com/locations/st-louis) covers the wider area. ## Licensed to pull plumbing permits in Crestwood Plumbing permits for Crestwood go through the jurisdiction covering Crestwood 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 Crestwood We have 1 documented project in Crestwood itself and 6 more elsewhere in St. Louis County, covering restaurant build-out, dental office in an occupied building, dental surgical center and plant cafeteria and restroom renovation. Distances are straight-line between town centers. - [In Crestwood ### 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) - [Near Crestwood — Webster Groves, ~3 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) - [Near Crestwood — Richmond Heights, ~6 mi ### Dental surgical center (2024) Richmond Heights Clinical plumbing with plaster traps, 12 floor drains, hub drains and cleanouts, plus a grinder lift station and sump pump. View project scope](https://legacyplumbingmo.com/projects/dental-surgery-center-plumbing-richmond-heights-mo) - [Near Crestwood — St. Louis, ~11 mi ### Plant cafeteria and restroom renovation (2025) St. Louis Renovation scope with 5 water closets, 7 lavatories, 4 showers, a bottle-filling fountain and a recirculating electric water heater with an RPZ. View project scope](https://legacyplumbingmo.com/projects/pharmaceutical-plant-cafeteria-renovation-st-louis) ## Documented project work in Crestwood & nearby - [Pizza restaurant plumbing — Crestwood](https://legacyplumbingmo.com/projects/restaurant-plumbing-crestwood-mo) FAQ ## Crestwood Plumbing Questions - **What restaurant plumbing have you completed in Crestwood?:** Our new pizza restaurant scope included 18 floor sinks, 11 area drains, solids and indoor grease interceptors, gas and electric water heaters, backflow protection and restroom fixtures. - **Who issues commercial plumbing permits in Crestwood?:** Crestwood contracts with St. Louis County for the building, mechanical, electrical and plumbing codes, so commercial plumbing permits and inspections run through St. Louis County Transportation & Public Works. ## Nearby areas we serve - [Commercial plumbing in Affton](https://legacyplumbingmo.com/service-area/affton-mo) - [Commercial plumbing in Fenton](https://legacyplumbingmo.com/service-area/fenton-mo) - [Commercial plumbing in Mehlville](https://legacyplumbingmo.com/service-area/mehlville-mo) - [Commercial plumbing in Sunset Hills](https://legacyplumbingmo.com/service-area/sunset-hills-mo) - [Commercial plumbing in Kirkwood](https://legacyplumbingmo.com/service-area/kirkwood-mo) - [Commercial plumbing in Webster Groves](https://legacyplumbingmo.com/service-area/webster-groves-mo) ## Need a Plumber in Crestwood? Call 636-978-0120 or request your free estimate — we respond same business day across St. Louis 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)