If you’re planning a home renovation or new construction project in Oregon, you might be wondering: Can a general contractor do plumbing in Oregon? It’s a common question—and for good reason. Plumbing is essential to any building project, but Oregon has specific licensing laws that dictate who can legally perform this work. Getting it wrong could mean costly fines, failed inspections, or even safety hazards. Let’s clear up the confusion once and for all.
What Does Oregon Law Say About General Contractors and Plumbing?
In Oregon, the Construction Contractors Board (CCB) regulates who can perform construction-related work, including plumbing. According to the CCB and the Oregon State Plumbing Board, plumbing is a specialized trade that generally requires a separate plumbing license.
A general contractor (GC) with a CCB license cannot legally perform plumbing work unless they also hold a valid Oregon plumbing license or employ a licensed plumber under their supervision.
💡 Key Fact: Oregon law (ORS 698.030) states that any plumbing work—beyond minor repairs like replacing a faucet washer—must be done by a licensed plumber or under the direct supervision of one.
This means that while a GC can coordinate plumbing as part of a larger project, they cannot personally install pipes, water heaters, or sewer lines unless they’re dually licensed.
Can a General Contractor Supervise Plumbing Work?
Yes—but with strict conditions.
A general contractor can hire and supervise a licensed plumber on a job site. In this scenario:
The plumber must hold an active Oregon plumbing license (either as a journeyman or contractor).
The GC remains responsible for overall project compliance but does not need a plumbing license themselves if they’re not doing the hands-on work.
However, if the GC attempts to do plumbing tasks without the proper license, they risk:
Fines up to $5,000 per violation (CCB enforcement data, 2024)
Project stop-work orders
Voided insurance claims if damage occurs due to unlicensed work
📌 Real-World Example: In 2023, a Portland-based GC was fined $3,200 after inspectors discovered he installed a bathroom drain system without a plumbing license. The homeowner had to pay an additional $4,500 to have the work redone by a licensed professional.
What Plumbing Tasks Are Off-Limits for General Contractors?
Not all plumbing work requires a license—but the line is narrow. Here’s a quick breakdown:
Replacing faucet cartridges or washers
Installing new water lines
Unclogging drains (with basic tools)
Sewer line installation
Mounting pre-assembled fixtures (e.g., sinks)
Water heater installation
Minor toilet repairs
Gas line connections
⚠️ Important: Even mounting a sink becomes regulated if it involves connecting supply lines or drains that weren’t previously installed.
For clarity, the Oregon State Plumbing Board defines “plumbing work” as “the installation, repair, or alteration of piping, fixtures, appliances, and other appurtenances used for water supply, drainage, or gas.” (Source: Oregon.gov )
How to Verify If Your Contractor Can Legally Do Plumbing
Before hiring, take these 3 essential steps:
Check Their CCB License: Visit Oregon CCB’s online license lookup and search by name or license number. Look for endorsements or additional trade licenses.
Ask for Their Plumbing License Number: A legitimate plumber will provide their Oregon Plumbing Contractor License or Journeyman Plumber Certificate. Verify it through the Building Codes Division (BCD) .
Request Proof of Insurance: Ensure their policy covers plumbing work. Unlicensed plumbing often voids liability coverage.
🔍 Pro Tip: If a GC claims, “I’ve been doing plumbing for 20 years,” that doesn’t override Oregon law. Experience ≠ legal authorization.
Why Licensing Matters: Safety, Compliance, and Resale Value
Hiring unlicensed help might save money upfront—but it can cost you far more long-term:
Safety Risks: Improper gas or water line installation can lead to leaks, mold, or carbon monoxide exposure.
Failed Inspections: Oregon requires plumbing inspections for most residential projects. Unlicensed work = automatic fail.
Home Sale Complications: Future buyers’ inspectors often flag unpermitted plumbing. You may need to disclose—and fix—it before closing.
According to a 2024 study by the National Association of Home Builders (NAHB), homes with unpermitted plumbing work took 23% longer to sell and sold for 5–7% below market value.
What If You’re a General Contractor Wanting to Do Plumbing?
Apply for a Plumbing Contractor License through the BCD.
Maintain both CCB and plumbing licenses with continuing education.
🛠️ Timeframe: From start to licensed plumber, expect 48–60 months of training and exams. But once licensed, you can legally perform both general contracting and plumbing—making you far more competitive.
FAQ: Can a General Contractor Do Plumbing in Oregon?
Q1: Can a handyman do plumbing in Oregon?
A: Only very minor tasks (like replacing a showerhead). Any work involving pipe installation, drains, or gas requires a plumbing license. Handymen without licenses cannot legally perform plumbing beyond basic maintenance.
Q2: Do I need a permit for plumbing work in Oregon?
A: Yes—most plumbing projects require a permit from your local building department. This includes water heater replacements, new fixture installations, and any new pipe runs. The permit must be pulled by a licensed plumber or contractor.
Q3: Can a general contractor pull a plumbing permit?
A: Only if they hold a valid Oregon plumbing license. Otherwise, the licensed plumber on the job must pull the permit.
Q4: What’s the penalty for unlicensed plumbing in Oregon?
A: Fines range from $1,000 to $5,000 per violation, plus potential lawsuits if damage occurs. Repeat offenders may face criminal charges.
Q5: Are there exceptions for homeowners?
A: Yes! Oregon allows owner-builders to do their own plumbing on their primary residence—but they must still obtain permits and pass inspections. They cannot hire unlicensed help to do the work for them.
So, can a general contractor do plumbing in Oregon? The short answer: Only if they’re also a licensed plumber. Otherwise, they must hire one. Oregon’s laws prioritize safety, quality, and accountability—and for good reason. Cutting corners on plumbing isn’t just illegal; it’s risky for your home and health.
If you’re a homeowner, always verify licenses before work begins. If you’re a contractor, consider getting that plumbing license—it’s a smart investment in your business and reputation.
Found this guide helpful? Share it with a friend or on social media to help others avoid costly mistakes! 🛠️💧 #OregonPlumbing #LicensedContractor #HomeRenovationTips
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