Plumbing contractors in
St Louis, Missouri.
A public directory of licensed plumbing contractors serving greater St Louis. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.
Common Job Costs
Licensing Requirements
Licensing Requirements
Missouri requires plumber contractors to hold a state plumbing contractor license through the Division of Professional Registration. Must pass state exam, provide proof of 4 years experience or apprenticeship completion, carry required insurance, and renew annually. Journeyman plumber license requires 4-year apprenticeship or equivalent experience plus state exam.
Permit Requirements
St Louis requires permits for water heater replacement, new plumbing installations, and major repairs. Permits range from $25-150 depending on scope. Must be pulled before work begins.
Inspection Schedule
Rough-in inspection before covering pipes, final inspection upon completion. Emergency repairs may require next-day inspection. St Louis Building Division typically schedules within 24-48 hours of request.
Insurance Minimums
General liability minimum $300,000, workers compensation if employees, surety bond $10,000 for contractor license in Missouri
How to Get Licensed
meet experience requirements
Complete 4-year apprenticeship program or demonstrate 4 years of equivalent plumbing experience with documented proof from employers
obtain journeyman license
Apply for journeyman plumber license with Missouri Division of Professional Registration, submit experience documentation and application fee
pass journeyman exam
Take and pass the Missouri journeyman plumber examination covering codes, regulations, and technical knowledge
secure insurance and bonding
Obtain required general liability insurance ($300,000 minimum), workers compensation if applicable, and $10,000 surety bond
apply for contractor license
Submit contractor license application to Missouri Division of Professional Registration with insurance documentation and fees
pass contractor exam
Take and pass the Missouri plumbing contractor examination covering business practices and advanced technical requirements
maintain license
Renew license annually, complete required continuing education, and maintain insurance and bonding requirements
About This Market
St Louis plumbing market runs steady year-round with 1879 licensed establishments statewide creating solid competition. Median wage hits $33.84/hour, reflecting decent demand driven by aging housing stock, winter freeze-ups, and steady commercial construction. Emergency calls and water heater replacements keep the phones ringing, while sewer line work on older neighborhoods brings the bigger tickets. Market's not oversaturated but you'll earn every job.
Get your Missouri contractor license sorted first - state exam and experience requirements are non-negotiable. St Louis Building Division moves permits fast but they want them pulled before you touch anything. Winter's your money season with frozen pipes and furnace coil issues, spring brings the maintenance calls. Know your way around cast iron and clay sewer lines - half this city's underground infrastructure predates modern codes. Keep emergency response times tight and your phone will stay busy.
- median hourly wageBureau of Labor Statistics
- median annual salaryBureau of Labor Statistics
- number of licensed establishmentsU.S. Census Bureau
- licensing requirementsMissouri Division of Professional Registration
- permit requirementsSt Louis Building Division
- insurance minimumsMissouri Department of Commerce and Insurance
Frequently Asked Questions
What license do I need to work as a plumbing contractor in St Louis?
Missouri requires a state plumbing contractor license through the Division of Professional Registration, plus individual plumbers need journeyman licenses. Both require passing state exams and demonstrating 4 years of experience or completed apprenticeship.
How much do plumbers make in St Louis?
According to BLS data, plumbers in Missouri earn a median wage of $33.84 per hour or $70,387 annually, with emergency services and specialized work commanding premium rates.
Do I need permits for plumbing work in St Louis?
Yes, St Louis requires permits for water heater replacements, new installations, and major repairs. Permits cost $25-150 and must be obtained before starting work, with inspections required at rough-in and completion stages.
What insurance do plumbing contractors need in Missouri?
Missouri requires general liability insurance of at least $300,000, workers compensation if you have employees, and a $10,000 surety bond for the contractor license.
When is peak season for plumbers in St Louis?
Winter months (December-February) see highest demand due to frozen pipes and heating system issues, followed by spring (March-May) for maintenance and new construction projects.
Plumbing contractors in St Louis
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