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Plumber in St. Louis, MO: written quotes on one scope

For a plumbing job in St. Louis, describe the fixtures, drains and supply lines involved before comparing written scopes. The city publishes a plumbing-permit application service. Census estimates that 86.2% of St. Louis city housing units were built before 1980; discuss access to concealed pipes without assuming their material or condition.Census housing profile (read 2026-10-17).

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 Latest source read: 5 November 2026 Updated 2026-11-05

InstaBids assistantAI · builds your written scope with you

What plumbing job do you need done in St. Louis, MO? Describe it once to start your written scope.

Start from a common job
You choose who gets your number
Or send it from your own AIChatGPTClaudeGrokGeminiMore ways
  1. Describe it onceBy chat, or through your own AI assistant, and add photos.
  2. Post it and send itContractors bid in writing on that scope.
  3. Compare line by lineEvery quote is written against the same scope.
  4. You chooseContact details stay hidden until you pick and they confirm.
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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--mo--st-louis&utm_source=us&utm_medium=page&utm_campaign=hire&page_type=hire&place=st+louis%2C+MO#job=plumbing%20job
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Every page is plain HTML. Steps for every assistant: add to your assistant.

Key facts for hiring a plumber in St. Louis

How to get written quotes on one scope

Describe the plumbing problem, visible damage and any known earlier repairs. Give every bid the same fixture list and access information.

Ask each written scope to separate the plumbing work, opening and closing walls, cleanup and any excluded restoration.

For St. Louis plumbing applications, use the city service as the reference for the application paperwork and inspection-scheduling discussion. Ask each written scope to identify who handles those steps. Apply for a Plumbing Permit (read 2026-11-05).

  1. Describe the job once, using the scope checklist below, built from what we found for St. Louis.
  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 St. Louis

For a sewer lateral or soil-stack project, describe the route and access you know about. Ask how unexpected concealed work will be documented before the scope changes.

Do you need a permit for a plumbing job in St. Louis?

St. Louis's permit page (read 17 October 2026): “Examples of plumbing work requiring plumbing permits and inspections include: the placement of new plumbing fixtures soil pipe connections replacement of sewer laterals, soil stacks, vent pipes and water supply lines.” Open St. Louis's source page

What license does a plumber need in St. Louis?

The City of St. Louis Business License Search states this business-licence requirement verbatim: All persons (sole proprietors, partnerships, and corporations) who conduct business in the City of St. Louis, MO must obtain a business license for that activity. Business License Search (read 2026-11-05). This is the city business-licence requirement; use the separate plumbing-permit service for the plumbing application instructions.

Missouri license lookup guide

plumber license lookup St. Louis

After you pick a plumber, you can open the City of St. Louis Business License Search and select Business Name. Use the legal business name, as the search tips instruct. The source describes current-year graduated business licence records and distinguishes them from other licence types (read 2026-11-05).

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

Median hourly wage for Plumbers, Pipefitters, and Steamfitters in the St. Louis, MO-IL area, May 2025: $37.02 (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

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

Related pages

Plumber in other Missouri cities

Other trades in St. Louis

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