Plumber in Baltimore, MD: written quotes on one scope

For a Baltimore plumbing job, request written quotes against one scope.81.6% of Baltimore's homes were built before 1980 (Census ACS 2020-2024).

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--md--baltimore&utm_source=us&utm_medium=page&utm_campaign=hire&page_type=hire&place=baltimore%2C+MD#job=plumbing%20job
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Key facts for hiring a plumber in Baltimore

Baltimore city has a median home construction year of 1947 (Census ACS 2020–2024, margin of error ±2 years). Census housing age; read 2026-10-17.
Baltimore Building Codes §2903.1 opens with an exception clause; read the complete city quotation below.
BLS groups plumbers, pipefitters and steamfitters in its Baltimore-Columbia-Towson metro wage estimate; the occupation and geographic scope appear in the wage block below.

How to get written quotes on one scope

Include Baltimore permit handling in the scope: ask each written quote to identify who will pull the permit and how inspections are included, alongside the city code quotation below. Baltimore Building Codes §2903; read 2026-10-17.

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

For Baltimore homes, separate the proposed fixture repair from any work on older supply or drain lines: Census ACS 2020–2024 estimates 67.5% (±1.1 percentage points, 90% margin of error) of city housing was built before 1960. Census housing construction eras; 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 Baltimore permit the rule quoted below calls for, if your job is that work, and when the inspection is booked
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 Baltimore?

Baltimore's permit page (read 17 October 2026): “Unless specifically excepted by these plumbing regulations, no plumbing work may be undertaken before the Building Official has issued a permit for that work.” Open Baltimore's source page

Baltimore's permit page (read 17 October 2026): “The list of work below needs a permit: Residential 1and 2-family dwellings work that is:” “Not the same size and location: adding or replacing plumbing, mechanical, gas and electrical fixtures and devices”. Open Baltimore's source page

Baltimore frozen pipes

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

Median hourly wage for Plumbers, Pipefitters, and Steamfitters in the Baltimore-Columbia-Towson, MD area, May 2025: $30.38 (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

Baltimore permit page, read 17 October 2026: codes.baltimorecity.gov
Baltimore permit page, read 17 October 2026: www.baltimorecity.gov
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 OEUM001258000000047215208), 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.