Plumbing Contractor Permit Requirements in Denver, CO

Complete permit and license guide for starting a plumbing contractor in Denver, Denver County, Colorado.

$700 -- $2500 6–10 weeks to obtain all licenses and permits 6 requirements

Not legal advice. Requirements may change — always verify with your local government authority before applying. Last verified: .

Denver / Denver County Requirements

2 requirements
1

City and County of Denver — Plumbing Contractor License

Denver requires a separate city-issued Plumbing Contractor License from Denver Community Planning and Development (CPD). A Denver-licensed Master Plumber must be listed as the qualifier. The contractor license is separate from the individual master plumber license and must be renewed annually. Apply via the Denver eLicense portal.

$200/year1–3 weeks
Official government source
2

Denver Sales Tax License

Plumbing contractors selling materials as part of their work must obtain a Denver Sales Tax License from Denver Treasury. Required for businesses collecting Denver's 4.81% sales tax.

$50 (one-time registration fee)1–5 days
Official government source

Colorado State Requirements

3 requirements
1

Colorado Master Plumber License

Colorado requires a Master Plumber License issued by the Colorado Examining Board of Plumbers for anyone performing plumbing work. To qualify a plumbing contracting business, the responsible individual must hold a Colorado Master Plumber License. Applicants need 4 years of experience (2 as journeyman) and must pass a state exam.

$60 application fee + $30 exam fee; $40/year renewal4–8 weeks
Official government source
2

Colorado Plumbing Contractor Bond

Plumbing contractors in Colorado are generally required to carry a surety bond and liability insurance. Denver specifically requires proof of $1,000,000 general liability insurance.

$500–$1,500/year (combined bond and insurance)1–5 days
Official government source
3

Colorado Business Entity Registration (if applicable)

LLCs and corporations must register with the Colorado Secretary of State.

$50 (LLC filing fee)Immediate (online filing)
Official government source

Federal Requirements

1 requirement
1

EIN (Employer Identification Number)

Required if you have employees or operate as an LLC/corporation. Free from the IRS.

FreeImmediate (online application)
Official government source

Official Sources

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