Plumbing contractors in
Denver, Colorado.
A public directory of licensed plumbing contractors serving greater Denver. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.
Common Job Costs
Licensing Requirements
Licensing Requirements
Colorado requires Plumber License through Department of Regulatory Agencies (DORA). Must complete 4-year apprenticeship or equivalent experience, pass written exam covering Colorado Plumbing Code and International Plumbing Code. Journeyman license required before Master Plumber eligibility. Renewal every 3 years with continuing education requirements.
Permit Requirements
Denver requires permits for water heater replacement, new fixtures, gas line work, and sewer connections. Permits obtained through Denver Community Planning and Development. Minor repairs under $1000 typically exempt.
Inspection Schedule
Required inspections for rough-in plumbing before walls close, final inspection before occupancy. Gas line work requires separate gas inspection. Schedule through Denver Building Inspection Services.
Insurance Minimums
General liability minimum $300,000, workers compensation required for employees. Many jobs require $1M+ coverage. Bonding requirements vary by project size.
How to Get Licensed
Complete apprenticeship
Finish 4-year plumbing apprenticeship program through approved sponsor or demonstrate equivalent work experience with documented proof of training hours
Submit application
File license application with Colorado DORA including proof of apprenticeship completion, work history documentation, and required fees
Pass state exam
Take and pass written examination covering International Plumbing Code, Colorado Plumbing Code, safety regulations, and local amendments
Provide insurance proof
Submit certificates of insurance showing required liability coverage and workers compensation if employing others
Pay licensing fees
Pay all required fees including application, examination, and initial license issuance fees totaling approximately $300-500
Maintain license
Renew every 3 years with continuing education requirements and updated insurance documentation
About This Market
Denver's plumber market is solid with 2528 licensed establishments statewide competing for work. High-altitude living means freeze-thaw cycles hit hard, driving steady demand for pipe repairs and water heater work. New construction in metro areas keeps installation work flowing, but the bread and butter is service calls in older neighborhoods with aging infrastructure. Costs run higher than national average due to elevation challenges, material transport costs, and skilled labor shortages. Getting licensed in Colorado isn't a joke - you need that 4-year apprenticeship and the state exam covers both international and Colorado-specific codes. Denver's permit process is straightforward but mandatory for most jobs beyond basic repairs. Winter freeze-ups keep you busy when other trades slow down. The altitude affects everything from pipe materials to fixture performance, so know your local conditions. Competition is stiff in metro Denver, but suburbs and mountain communities always need reliable plumbers who can handle the climate challenges.
- Licensed establishments countU.S. Census Bureau
- Licensing requirementsColorado Department of Regulatory Agencies (DORA)
- Permit requirementsDenver Community Planning and Development
- Cost estimatesMarket research and industry estimates
- Insurance requirementsColorado state licensing regulations
Frequently Asked Questions
What does a Colorado plumber license cost and how long does it take?
License application runs $150-300 plus exam fees. Takes 4-6 weeks processing after passing the state exam, which requires completing a 4-year apprenticeship program first according to DORA requirements.
Do I need permits for water heater replacement in Denver?
Yes, Denver requires permits for all water heater installations and replacements. Apply through Denver Community Planning and Development - costs typically $50-150 depending on project scope.
What's the average hourly rate for plumbers in Denver?
Service calls run $100-150 per hour based on market estimates. Emergency and weekend calls command premium rates of $150-200+ per hour, with typical minimum charges of 1-2 hours.
How many licensed plumber contractors operate in Colorado?
Approximately 2,528 licensed plumbing establishments operate statewide according to Census data, with highest concentration in Denver metro area serving population centers.
What insurance do plumbers need to work in Colorado?
Minimum $300,000 general liability required, plus workers compensation for employees. Most commercial jobs require $1M coverage. Colorado contractors must maintain continuous coverage per state licensing board requirements.
Plumbing contractors in Denver
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