Originally published: July 2026
Portland requires a commercial plumbing permit for any plumbing work in a commercial structure, and only a licensed plumbing contractor holding an Oregon Construction Contractors Board (CCB) license can pull it.
Portland Permitting & Development reviews commercial plumbing plans in about 10 business days when plan review is required. Costs include the base permit fee, a 12% state surcharge, and System Development Charges (SDCs) when new fixtures are added.
Missing a required permit can stall your project at final inspection. Modern Plumbing pulls and manages commercial plumbing permits across Portland — request a permit consultation today.
If you’re ready to get started, call us now!
A licensed plumbing contractor must buy the permit and perform the work for any business operating in a commercial structure or at a commercial use site.
That contractor must hold a current Oregon Construction Contractors Board (CCB) license, and the license number must appear on both the permit application and the contractor’s company materials.
Condo owners working on their own unit may be able to handle some simple plumbing projects themselves without a licensed contractor.
Every other commercial plumbing scope — new installations, alterations, or repairs in a business space — requires the licensed-contractor path.
Portland requires a commercial plumbing permit to install, alter, or repair plumbing fixtures, piping, or sewer lines in a business or other commercial-use property.
Food service establishments face an added step: approval from the Multnomah County Health Department or the Oregon State Agriculture Department is required before plumbing plan review even begins.
Projects with new outside installations or complex systems — as defined by OAR 918-780-0040 — or medical gas systems trigger a plan review fee on top of standard permit costs.
Simpler commercial plumbing work that doesn’t need plan review can go straight to permit issuance through Development Hub PDX (DevHub).
Commercial plumbing plan review generally takes 10 business days once the Commercial Plumbing section of Portland Permitting & Development receives your submission.
When plan review isn’t required, the permit can be issued online through DevHub without that review window.
Projects that require plan review must submit plumbing plans along with the commercial building plans on DevHub, while the plumbing permit application is emailed separately.
Pre-construction meetings are encouraged for some projects — and mandatory for others — and are included in the permit cost at no extra charge.
If you’re ready to get started, call us now!
Commercial plumbing permit costs include a base fee tied to your scope of work, plus a 12% surcharge that the State of Oregon applies to all building, plumbing, electrical, and mechanical permits. Complex systems or new outside installations add a separate plan review fee.
System Development Charges (SDCs) apply whenever a project adds new plumbing fixtures, since SDCs are one-time fees tied to the proposed new use or increase in use of a property.
Water meter size — and the SDC tied to it — is determined by the number of plumbing fixtures at the property, while fire lines are exempt from SDC fees entirely.
| Cost Component | What It Covers | When It Applies |
| Base permit fee | Scope of plumbing work described on the application | Every commercial plumbing permit |
| 12% state surcharge | Applied to building, plumbing, electrical, and mechanical permits | Every commercial plumbing permit |
| Plan review fee | New outside installations, complex systems, and medical gas systems | Projects meeting OAR 918-780-0040 criteria |
| System Development Charges (SDCs) | New or additional plumbing fixtures | Projects adding fixtures or changing property use |
Underestimating SDCs early in a project can strain your budget later. Modern Plumbing helps Portland businesses scope permit costs accurately before submission, not after.
Every commercial plumbing permit follows a rough-in-then-final inspection sequence. Rough-in work must pass inspection before it’s concealed behind walls or flooring, since the Oregon Plumbing Specialty Code requires that inspection before concealment happens.
Each trade permit — plumbing, electrical, mechanical — carries its own separate rough-in and final inspections. Every permit, trade, and building alike, also needs a “999 Final Permit” inspection before it’s considered complete and officially closed; without that inspection, the permit stays in “under inspection” status indefinitely.
A commercial plumbing permit expires if it goes 180 consecutive days without an approved inspection.
Restaurants and properties juggling a broader compliance checklist alongside permit deadlines should track inspection activity closely, since a lapsed permit can delay occupancy just as much as a missed backflow test can trigger a shutoff.
Who is allowed to pull a commercial plumbing permit in Portland?
Only a licensed plumbing contractor holding a current Oregon Construction Contractors Board license can pull a commercial plumbing permit. The license number must appear on the permit application. Condo owners may handle some simple plumbing projects in their own units themselves.
How long does a commercial plumbing plan review take in Portland?
Plan review generally takes 10 business days once Portland Permitting & Development’s Commercial Plumbing section receives your submission. Projects that don’t require plan review can be issued faster through Development Hub PDX, skipping that step.
Does a restaurant need extra approval before plumbing plan review?
Yes. Food service establishments need approval from the Multnomah County Health Department or the Oregon State Agriculture Department before plumbing plan review can begin, in addition to the standard commercial plumbing permit requirements that apply to every business regardless of size.
What does a commercial plumbing permit cost in Portland?
Costs include a base fee tied to your scope of work, a 12% state surcharge on all plumbing permits, and, if applicable, a separate plan review fee for complex systems. System Development Charges apply separately whenever new plumbing fixtures are added.
When are System Development Charges required?
SDCs apply whenever a project adds new plumbing fixtures or increases a property’s use, since they’re one-time fees tied to that impact. Water meter size, and the SDC calculated from it, depend on the total fixture count at the property.
What inspections does a commercial plumbing permit require?
Every permit requires a rough-in inspection before concealment and a “999 Final Permit” inspection to close. Each trade permit — plumbing, electrical, mechanical — carries its own separate rough-in and final inspection requirements. This sequence applies regardless of project size.
Can a commercial plumbing permit expire before the work is done?
Yes. A permit expires if it goes 180 consecutive days without an approved inspection. Keeping inspection activity current, even for partial project phases, prevents a permit from lapsing before the full scope of work is complete.
Can I get a commercial plumbing permit without plan review?
Yes, if your project doesn’t involve new outside installations, complex systems, or medical gas systems under OAR 918-780-0040. Simpler scopes of work can be issued directly through Development Hub PDX without the 10-business-day review window.
Don’t let a missing permit or a lapsed inspection window delay your project. Modern Plumbing handles commercial plumbing permits and inspections across Portland — contact us to get your project scheduled correctly the first time.
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