Plumber in Madison, WI: written quotes on one scope

For a Madison plumbing job, identify the fixtures and any sewer work before requesting written quotes. Madison's online-permit page names fixture replacement as permit work. Census housing-age data describes a citywide mix of building eras; give the scope your own home's pipe material and access conditions.

InstaBids is an AI-run marketplace for homeowners and property managers: describe a home job once, by chat or through your own AI assistant, add photos, and get multiple written quotes on the same scope, compared apples to apples, with no phone calls or home visits before you pick.

By InstaBids editorial team with AI research agents. Sources read: 17 October 2026 Updated 2026-11-03

Describe it onceBy chat, or through your own AI assistant, and add photos.
Post it and send itContractors bid in writing on that scope.
Compare line by lineEvery quote is written against the same scope.
You chooseContact details stay hidden until you pick and they confirm.

For your AI assistant

MCP connector · REST API · plain HTML

Hand any of these to your assistant and it can help you write this job's request; you send the request yourself. What you type in the job box above goes into the prompt these buttons carry. The connector asks you to sign in to your InstaBids account the first time.

MCP connector URLhttps://instabids.ai/api/agent/mcp
Agent API (OpenAPI)https://instabids.ai/openapi.json
Start-request linkhttps://instabids.ai/intake?from=hire-plumber--wi--madison&utm_source=us&utm_medium=page&utm_campaign=hire&page_type=hire&place=madison%2C+WI#job=plumbing%20job
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Key facts for hiring a plumber in Madison

Madison's estimated median housing construction year is 1980, with a margin of error of ±2 years (ACS 2020–2024). U.S. Census Bureau, American Community Survey 5-year (B25035) (read 2026-10-17).
Madison's permit source names sanitary sewer connection as permit work; the full source wording is in the permit section. Madison permit page (read 2026-10-17).
Madison's online-permit source lists water heaters and water softeners among its examples. Madison permit page (read 2026-10-17).

How to get written quotes on one scope

In Madison, 50.6% of housing units were built before 1980 (ACS 2020–2024); for work exposing old pipes, ask each written quote to distinguish the described replacement from additional pipe work discovered after opening a wall. U.S. Census Bureau, American Community Survey 5-year (B25034) (read 2026-10-17).

Describe the job once, using the scope checklist below, built from what we found for Madison.
Post it on InstaBids and send it.
Every quote is written against the same scope, so they compare line by line.
You choose who gets your number.
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 Madison

Madison housing units dating to 1959 or earlier account for an estimated 26.3% of the city total, with a 90% margin of error of ±1.0 percentage point (ACS 2020–2024); for a home from that era, ask what the scope includes if original supply or drain lines appear. The citywide estimate does not establish the age or condition of an individual home's pipes. U.S. Census Bureau, American Community Survey 5-year (B25034) (read 2026-10-17).

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 Madison permit for sanitary sewer lateral abandoning or plugging, and when the inspection is booked
Who pulls the Madison permit for sanitary sewer connection, and when the inspection is booked
Whether your job is one Madison's page quoted below lists (fixture replacement), and who applies for the permit if one applies to your job
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 Madison?

Madison's permit page (read 17 October 2026): “Sanitary Sewer - connect to Obtain: Permit to Excavate in the Right of Way Yes”. Open Madison's source page

Madison's permit page (read 17 October 2026): “Choose plumbing repair or replace for permit type. Examples of permits that you can apply for online:” “Direct replacement of fixtures in an existing building”. Open Madison's source page

Plumber Madison

The Madison, WI metropolitan occupational wage estimate below covers plumbers, pipefitters and steamfitters. It describes pay to workers across the metro, rather than a plumbing-job price or a city-only estimate. BLS Occupational Employment and Wage Statistics (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 Madison, WI area, May 2025: $40.94 (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

Madison permit page, read 17 October 2026: www.cityofmadison.com
Madison permit page, read 17 October 2026: www.cityofmadison.com
U.S. Census Bureau, American Community Survey 5-year (B25035), ACS 5-year 2020-2024, read 17 October 2026: api.census.gov
BLS Occupational Employment and Wage Statistics (series OEUM003154000000047215208), 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.