Plumber in San Jose, CA: written quotes on one scope

For a San Jose plumbing job, request written quotes against one scope.San Jose's permit page “When Is a Building Permit Required?” covers plumbing work (read 22 October 2026), quoted below.60.4% of San Jose'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 Latest source read: 22 October 2026 Updated 2026-10-27

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

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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--ca--san-jose&utm_source=us&utm_medium=page&utm_campaign=hire&page_type=hire&place=san+jose%2C+CA#job=plumbing%20job
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Key facts for hiring a plumber in San Jose

San Jose's permit page “When Is a Building Permit Required?”: which drain, faucet or toilet work is exempt from a permit and which is not (read 17 October 2026), quoted below.
San Jose's permit page: a permit rule for water heater replacement (read 17 October 2026), quoted below.
Half of San Jose's homes were built in 1976 or earlier (Census ACS 2020-2024).
San Jose's homes by age: 18.6% (±0.5 points) were built in 1959 or earlier, 41.8% (±0.7 points) from 1960 to 1979, 21% (±0.6 points) from 1980 to 1999 and 18.6% (±0.5 points) in 2000 or later (Census ACS 2020-2024, margins of error at 90%).

How to get written quotes on one scope

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

What the job covers: which fixtures, pipes or water heater, with size, type and location
If your home was built before 1980, ask whether old supply or drain lines are part of the job
Whether your job is the kind San Jose's rule quoted below exempts or the kind it says needs a permit (plumbing work)
Whether your job is the kind San Jose's rule quoted below exempts or the kind it says needs a permit (drain, faucet or toilet)
Who pulls the San Jose permit for water heater replacement, 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 San Jose?

San Jose's permit page “When Is a Building Permit Required?” (read 22 October 2026): “You are legally required to get a building permit and/or a subtrade (plumbing, electrical or mechanical) permit for projects involving:”

“New construction, additions, alteration of walls, or any structural change”
“Electrical work unless exempted”
“Plumbing work unless exempted”
“Mechanical work unless exempted”
“Installation of major appliances”
“Mounting equipment of a specified weight on walls or rooftops”
“Change in occupancy”
“Demolitions of buildings, structures, pools or septic tanks”
“Other projects as specified at Start Your Project”

Open San Jose's source page

San Jose's permit page “When Is a Building Permit Required?” (read 17 October 2026): “These types of simple projects do not require a plumbing permit:” “Drain, faucet, toilet, or leak repairs; clearing of stoppages; or minor parts replacement. If a concealed trap, drainpipe, or vent pipe becomes necessary to replace, this shall be treated as new work and a plumbing permit is required.” Open San Jose's source page

San Jose's permit page (read 17 October 2026): “Installing or replacing a water heater requires a plumbing permit. Depending on the type of water heater, an electrical permit may also be required.” Open San Jose's source page

What license does a plumber need in California?

California's licensing board, in its own words: “C-36 - Plumbing Contractor”

California license lookup guide

What in San Jose changes the job

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

Median hourly wage for Plumbers, Pipefitters, and Steamfitters in the San Jose-Sunnyvale-Santa Clara, CA area, May 2025: $51.71 (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

San Jose permit page “When Is a Building Permit Required?”, read 22 October 2026: www.sanjoseca.gov
San Jose permit page “When Is a Building Permit Required?”, read 17 October 2026: www.sanjoseca.gov
San Jose permit page, read 17 October 2026: www.sanjoseca.gov
cslb.ca.gov, read 22 October 2026: www.cslb.ca.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 OEUM004194000000047215208), 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.