Plumber in Denver, CO: written quotes on one scope

Key facts for hiring a plumber in Denver

For owner-performed plumbing, start with Denver's ADMIN 131.4 owner policy. Describe whether the request covers owner-performed work or work to be contracted, and keep that choice visible in the written scope. Read the complete eligibility conditions in the source. ADMIN 131.4 Owner-Occupier Policy — read 2026-10-30.

• Denver project coordination: identify whether plumbing is part of a new building or an addition.
• Exterior work: flag an individual landmark or historic-district building when describing the job.
• After you pick a plumber, you can use the state license lookup linked below.

How to get written quotes on one scope

Before sending a Denver plumbing scope, read section 130.3.3 of the city's code in the permit section. Describe whether the work alters existing systems and which fixtures are being replaced, so each written quote addresses the same work. 2025 Denver Building & Fire Code — read 2026-10-17.

1. Describe the job once, using the scope checklist below, built from what we found for Denver.
2. Post it on InstaBids and send it.
3. Every quote is written against the same scope, so they compare line by line.
4. You choose who gets your number.
5. Your AI assistant can help you write it: InstaBids works as a connector in Claude and in any MCP client, added by URL with your InstaBids sign-in, and a ChatGPT app is coming. You send the request yourself. Connect an assistant

Your written scope for a plumbing job in Denver

• What the job covers: which fixtures, pipes or water heater, with size, type and location
• If your home was built before 1960, ask how the quote handles original supply or drain lines the work uncovers
• Who pulls the Denver permit for new buildings and additions for single-family, duplex, and IRC townhomes, and when the inspection is booked
• Whether the Denver permit exemption quoted below covers your job, or the job needs a permit
• Removal and disposal of the old parts or materials
• Warranty terms on parts and labor, in writing

Do you need a permit for a plumbing job in Denver?

Denver's permit document “2025 Denver Building & Fire Code” (read 17 October 2026): “For work performed on an emergency basis outside of normal business hours (8:00 AM – 5:00 PM, Monday - Friday, except City holidays), and to maintain an existing service or equipment when the maintenance is necessary to protect health, life or safety, the application for a permit shall be made within 3 normal working days after commencement of the emergency work.” Open Denver's source document

Denver's permit page “Denver Quick Permits” (read 5 November 2026): “Trade permits for new buildings and additions for single-family, duplex, and IRC townhomes require an issued Residential Construction Permit to complete the quick permit application. If you do not know the permit number, please contact your general contractor. See video and FAQs below for details on this process.” Open Denver's source page

Denver's permit document “2025 Denver Building & Fire Code” (read 17 October 2026): “130.3.3 Plumbing. No plumbing permit shall be required for:” “General repairs in one- and two-family dwellings and townhouse units that do not alter existing systems, including replacement of like units such as bathroom/kitchen sinks, garbage disposals and water closets.” Open Denver's source document

What license does a plumber need in Denver?

After you pick a plumber, you can follow the Colorado Attorney General referral to the Department of Regulatory Agencies. Contractor Fraud states: Licenses to perform electrical or plumbing work are regulated by the state and you can search for them with the Department of Regulatory Agencies (opens new tab). Read 2026-10-22.

Colorado license lookup guide

Plumber in Denver

For Denver city, the Census ACS 2020–2024 housing estimate places 34.3% of housing units in the built-1959-or-earlier group, with a 90% margin of error of ±0.7 percentage points. This describes housing units, not pipe materials or the condition of your home. Census ACS housing construction-year estimates — read 2026-10-17.

Ask how the quote handles original supply or drain lines the work uncovers.

Median hourly wage for Plumbers, Pipefitters, and Steamfitters in the Denver-Aurora-Centennial, CO area, May 2025: $30.72 (U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics).

This is what workers in this occupation are paid per hour. It is not what a contractor charges for a job.

How does InstaBids work?

InstaBids does not hold payment for the work; you pay the contractor directly on the terms of the bid you accepted.

How is InstaBids different?

Each bidder appears under a stable label such as Contractor A, so you judge the work, not the brand.

Contact details stay hidden until the homeowner picks a contractor and they confirm the connection.

The contact-detail filter can miss disguised contact details.

Sources for the facts on this page

• Denver permit document “ADMIN 131.4 Owner-Occupier Policy”, read 30 October 2026: denvergov.org
• Denver permit document “2025 Denver Building & Fire Code”, read 17 October 2026: www.denvergov.org
• Denver permit page “Denver Quick Permits”, read 5 November 2026: www.denvergov.org
• stopfraudcolorado.gov, read 22 October 2026: stopfraudcolorado.gov
• BLS Occupational Employment and Wage Statistics (series OEUM001974000000047215208), May 2025, read 17 October 2026: api.bls.gov
• U.S. Census Bureau, American Community Survey 5-year (B25034), ACS 5-year 2020-2024, read 17 October 2026: api.census.gov

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.