# Plumbing Guides for St. Louis Facilities > Practical commercial plumbing guides for St. Louis GCs and facility owners: bid invites, permits, tenant build-outs, medical gas and winter prep. Canonical: https://legacyplumbingmo.com/resources Last updated: 2026-10-29 Resources · St. Louis Metro Field-tested answers on hiring, compliance, scheduling, and urgent plumbing problems — written by the people who run the jobs across St. Louis City and County, St. Charles County, and Jefferson County. Need a bid instead? Talk to our [commercial plumbing contractors in St. Louis](https://legacyplumbingmo.com/commercial) . Guides Facility Maintenance Hiring & Bidding Project Planning Healthcare Compliance Preconstruction Facility Operations ## Latest Articles Guides ### [How to Choose a Commercial Plumbing Company in St. Louis](https://legacyplumbingmo.com/resources/how-to-choose-a-commercial-plumbing-company-st-louis) What facility managers, GCs and owners should check before hiring a commercial plumber in St. Louis — licensing, union labor, service capacity, safety and pricing. October 29, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/how-to-choose-a-commercial-plumbing-company-st-louis) Facility Maintenance ### [Commercial Hydro Jetting vs. Drain Snaking: Which Does Your Building Need?](https://legacyplumbingmo.com/resources/commercial-hydro-jetting-vs-snaking-st-louis) When to hydro jet commercial drain lines in St. Louis instead of snaking them — grease, scale and roots, how often to jet, and what a camera inspection adds. October 29, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/commercial-hydro-jetting-vs-snaking-st-louis) Facility Maintenance ### [Commercial Water Heater Replacement in St. Charles County: A Planning Guide](https://legacyplumbingmo.com/resources/commercial-water-heater-replacement-st-charles-county) Planning a commercial water heater replacement in St. Charles or St. Louis? Signs it's time, tank vs. tankless, sizing, permits, and how to avoid downtime. October 29, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/commercial-water-heater-replacement-st-charles-county) Facility Maintenance ### [Before the First Hard Freeze: A Plumbing Walk-Through for St. Louis Commercial Buildings](https://legacyplumbingmo.com/resources/first-hard-freeze-commercial-plumbing-walkthrough-st-louis) When St. Louis freezes, where commercial pipes burst, and what facility managers should check before the first hard freeze: sprinklers, shutoffs, backflow. October 28, 2026 9 min read [Read the guide](https://legacyplumbingmo.com/resources/first-hard-freeze-commercial-plumbing-walkthrough-st-louis) Hiring & Bidding ### [What to Include in a Plumbing Bid Invite to Get Accurate, Comparable Numbers](https://legacyplumbingmo.com/resources/what-to-include-in-a-plumbing-bid-invite) The documents, scope notes and deadlines St. Louis general contractors should put in a plumbing bid invite to get accurate numbers that compare line for line. October 27, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/what-to-include-in-a-plumbing-bid-invite) Project Planning ### [Underground Plumbing Before the Slab: A Commercial Coordination and Inspection Checklist](https://legacyplumbingmo.com/resources/underground-plumbing-before-the-slab-checklist) A checklist for commercial underground plumbing before the slab pour — layout, sleeves, testing, inspection and backfill — for St. Louis metro new construction. October 27, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/underground-plumbing-before-the-slab-checklist) Healthcare ### [Dental Office Plumbing: Operatories, Vacuum and Air, Sterilization and Rough-In](https://legacyplumbingmo.com/resources/dental-office-plumbing-rough-in-guide) What's different about dental office plumbing — operatory utilities, vacuum and air, sterilization and amalgam separators — and how to plan the rough-in. October 27, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/dental-office-plumbing-rough-in-guide) Compliance ### [Commercial Plumbing Permits and Inspections in St. Louis City, St. Louis County and St. Charles County](https://legacyplumbingmo.com/resources/commercial-plumbing-permits-st-louis-st-charles) How commercial plumbing permits and inspections work in St. Louis City, St. Louis County and St. Charles County — who issues them and who can pull them. October 27, 2026 4 min read [Read the guide](https://legacyplumbingmo.com/resources/commercial-plumbing-permits-st-louis-st-charles) Preconstruction ### [How Prefabricated Plumbing Assemblies Shorten Schedules on Multifamily, Hotel, Healthcare and School Projects](https://legacyplumbingmo.com/resources/prefabricated-plumbing-assemblies-shorten-schedules) How prefab plumbing assemblies — risers, headwalls, carriers and racks — shorten schedules on multifamily, hotel, healthcare and school projects in St. Louis. October 27, 2026 4 min read [Read the guide](https://legacyplumbingmo.com/resources/prefabricated-plumbing-assemblies-shorten-schedules) Preconstruction ### [Why Design-Assist Preconstruction Saves Money on Commercial Plumbing](https://legacyplumbingmo.com/resources/design-assist-preconstruction-saves-money) Bringing a plumbing contractor in during design instead of at bid catches conflicts on paper. Here's what preconstruction involvement actually looks like on a St. Louis metro project. June 8, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/design-assist-preconstruction-saves-money) Facility Operations ### [When a Commercial Plumbing Problem Can't Wait](https://legacyplumbingmo.com/resources/commercial-plumbing-emergency-what-to-do-first) Plumbing problem in your St. Louis building? Call (636) 978-0120 for scheduled service Mon–Fri 7am–4pm. Steps to limit damage and plan repairs. May 20, 2026 5 min read [Read the guide](https://legacyplumbingmo.com/resources/commercial-plumbing-emergency-what-to-do-first) Project Planning ### [Tenant Build-Out Plumbing Timeline: What to Expect](https://legacyplumbingmo.com/resources/tenant-build-out-plumbing-timeline) A week-by-week look at commercial tenant build-out plumbing in the St. Louis metro — permitting, underground, rough-in, trim, and inspection — and where schedules usually slip. April 15, 2026 6 min read [Read the guide](https://legacyplumbingmo.com/resources/tenant-build-out-plumbing-timeline) Compliance ### [Medical Gas Plumbing Compliance: What Facility Owners Need to Know](https://legacyplumbingmo.com/resources/medical-gas-plumbing-compliance-facility-owners) NFPA 99, ASSE 6010 brazing, and third-party 6030 verification explained in plain language for St. Louis hospitals, surgical centers, and dental groups. March 4, 2026 7 min read [Read the guide](https://legacyplumbingmo.com/resources/medical-gas-plumbing-compliance-facility-owners) Hiring & Bidding ### [How to Choose a Commercial Plumbing Contractor in St. Louis](https://legacyplumbingmo.com/resources/how-to-choose-a-commercial-plumbing-contractor-in-st-louis) Licensing, self-performed scope, manpower, and bid clarity — the five things St. Louis general contractors and facility owners should verify before awarding a commercial plumbing contract. February 10, 2026 6 min read [Read the guide](https://legacyplumbingmo.com/resources/how-to-choose-a-commercial-plumbing-contractor-in-st-louis) ## Have a question we haven't covered? Check the [commercial plumbing FAQ](https://legacyplumbingmo.com/faq) , browse [our services](https://legacyplumbingmo.com/commercial) , or call us in O'Fallon, MO. [636-978-0120](tel:+16369780120) [Contact Us](https://legacyplumbingmo.com/contact-us) ## Need a Plumber in St. Louis or the Surrounding Area? Written bids within one business day, scheduled service Monday–Friday 7am–4pm, and union-trained crews since 1996 across the St. Louis metro and a 2-hour radius. [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)